From 92872257d573e4948d857100d8e68db63c8e76c0 Mon Sep 17 00:00:00 2001 From: notro Date: Wed, 9 Jul 2014 14:46:08 +0200 Subject: [PATCH] BCM2708: Add core Device Tree support Add the bare minimum needed to boot BCM2708 from a Device Tree. Signed-off-by: Noralf Tronnes BCM2708: DT: change 'axi' nodename to 'soc' Change DT node named 'axi' to 'soc' so it matches ARCH_BCM2835. The VC4 bootloader fills in certain properties in the 'axi' subtree, but since this is part of an upstreaming effort, the name is changed. Signed-off-by: Noralf Tronnes notro@tronnes.org BCM2708_DT: Correct length of the peripheral space Use dts-dirs feature for overlays. The kernel makefiles have a dts-dirs target that is for vendor subdirectories. Using this fixes the install_dtbs target, which previously did not install the overlays. BCM270X_DT: configure I2S DMA channels Signed-off-by: Matthias Reichl BCM270X_DT: switch to bcm2835-i2s I2S soundcard drivers with proper devicetree support (i.e. not linking to the cpu_dai/platform via name but to cpu/platform via of_node) will work out of the box without any modifications. When the kernel is compiled without devicetree support the platform code will instantiate the bcm2708-i2s driver and I2S soundcard drivers will link to it via name, as before. Signed-off-by: Matthias Reichl SDIO-overlay: add poll_once-boolean parameter Add paramter to toggle sdio-device-polling done every second or once at boot-time. Signed-off-by: Patrick Boettcher BCM270X_DT: Make mmc overlay compatible with current firmware The original DT overlay logic followed a merge-then-patch procedure, i.e. parameters are applied to the loaded overlay before the overlay is merged into the base DTB. This sequence has been changed to patch-then-merge, in order to support parameterised node names, and to protect against bad overlays. As a result, overrides (parameters) must only target labels in the overlay, but the overlay can obviously target nodes in the base DTB. mmc-overlay.dts (that switches back to the original mmc sdcard driver) is the only overlay violating that rule, and this patch fixes it. bcm270x_dt: Use the sdhost MMC controller by default The "mmc" overlay reverts to using the other controller. squash: Add cprman to dt BCM270X_DT: Use clk_core for I2C interfaces --- arch/arm/boot/dts/Makefile | 30 + arch/arm/boot/dts/bcm2708-rpi-b-plus.dts | 145 +++++ arch/arm/boot/dts/bcm2708-rpi-b.dts | 135 +++++ arch/arm/boot/dts/bcm2708-rpi-cm.dts | 102 ++++ arch/arm/boot/dts/bcm2708-rpi-cm.dtsi | 40 ++ arch/arm/boot/dts/bcm2708.dtsi | 40 ++ arch/arm/boot/dts/bcm2708_common.dtsi | 347 +++++++++++ arch/arm/boot/dts/bcm2709-rpi-2-b.dts | 145 +++++ arch/arm/boot/dts/bcm2709.dtsi | 102 ++++ arch/arm/boot/dts/bcm2835-rpi-cm.dts | 93 +++ arch/arm/boot/dts/bcm2835-rpi-cm.dtsi | 30 + arch/arm/boot/dts/overlays/Makefile | 69 +++ arch/arm/boot/dts/overlays/README | 648 +++++++++++++++++++++ arch/arm/boot/dts/overlays/ads7846-overlay.dts | 83 +++ .../dts/overlays/bmp085_i2c-sensor-overlay.dts | 23 + arch/arm/boot/dts/overlays/dht11-overlay.dts | 39 ++ arch/arm/boot/dts/overlays/enc28j60-overlay.dts | 50 ++ .../boot/dts/overlays/gpio-poweroff-overlay.dts | 34 ++ .../boot/dts/overlays/hifiberry-amp-overlay.dts | 39 ++ .../boot/dts/overlays/hifiberry-dac-overlay.dts | 34 ++ .../dts/overlays/hifiberry-dacplus-overlay.dts | 39 ++ .../boot/dts/overlays/hifiberry-digi-overlay.dts | 39 ++ arch/arm/boot/dts/overlays/hy28a-overlay.dts | 87 +++ arch/arm/boot/dts/overlays/hy28b-overlay.dts | 142 +++++ arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 55 ++ arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts | 13 + arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts | 39 ++ .../boot/dts/overlays/iqaudio-dacplus-overlay.dts | 39 ++ arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts | 57 ++ .../arm/boot/dts/overlays/mcp2515-can0-overlay.dts | 69 +++ .../arm/boot/dts/overlays/mcp2515-can1-overlay.dts | 69 +++ arch/arm/boot/dts/overlays/mmc-overlay.dts | 39 ++ arch/arm/boot/dts/overlays/mz61581-overlay.dts | 111 ++++ arch/arm/boot/dts/overlays/piscreen-overlay.dts | 96 +++ .../dts/overlays/pitft28-resistive-overlay.dts | 115 ++++ arch/arm/boot/dts/overlays/pps-gpio-overlay.dts | 34 ++ arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts | 46 ++ arch/arm/boot/dts/overlays/pwm-overlay.dts | 42 ++ arch/arm/boot/dts/overlays/raspidac3-overlay.dts | 45 ++ arch/arm/boot/dts/overlays/rpi-dac-overlay.dts | 34 ++ arch/arm/boot/dts/overlays/rpi-display-overlay.dts | 82 +++ arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts | 17 + arch/arm/boot/dts/overlays/rpi-proto-overlay.dts | 39 ++ arch/arm/boot/dts/overlays/rpi-sense-overlay.dts | 47 ++ arch/arm/boot/dts/overlays/sdhost-overlay.dts | 29 + arch/arm/boot/dts/overlays/sdio-overlay.dts | 32 + arch/arm/boot/dts/overlays/smi-dev-overlay.dts | 18 + arch/arm/boot/dts/overlays/smi-nand-overlay.dts | 69 +++ arch/arm/boot/dts/overlays/smi-overlay.dts | 37 ++ .../boot/dts/overlays/spi-gpio35-39-overlay.dts | 31 + arch/arm/boot/dts/overlays/tinylcd35-overlay.dts | 216 +++++++ arch/arm/boot/dts/overlays/uart1-overlay.dts | 38 ++ arch/arm/boot/dts/overlays/vga666-overlay.dts | 30 + arch/arm/boot/dts/overlays/w1-gpio-overlay.dts | 39 ++ .../boot/dts/overlays/w1-gpio-pullup-overlay.dts | 41 ++ 55 files changed, 4203 insertions(+) create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b.dts create mode 100755 arch/arm/boot/dts/bcm2708-rpi-cm.dts create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dtsi create mode 100644 arch/arm/boot/dts/bcm2708.dtsi create mode 100644 arch/arm/boot/dts/bcm2708_common.dtsi create mode 100644 arch/arm/boot/dts/bcm2709-rpi-2-b.dts create mode 100644 arch/arm/boot/dts/bcm2709.dtsi create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm.dts create mode 100644 arch/arm/boot/dts/bcm2835-rpi-cm.dtsi create mode 100644 arch/arm/boot/dts/overlays/Makefile create mode 100644 arch/arm/boot/dts/overlays/README create mode 100644 arch/arm/boot/dts/overlays/ads7846-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/dht11-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/enc28j60-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hy28a-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/hy28b-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts create mode 100755 arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/mmc-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/mz61581-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/piscreen-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/pps-gpio-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/pwm-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/raspidac3-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/rpi-dac-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/rpi-display-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/rpi-proto-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/rpi-sense-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/sdhost-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/sdio-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/smi-dev-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/smi-nand-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/smi-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/tinylcd35-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/uart1-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/vga666-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-overlay.dts create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -1,5 +1,25 @@ ifeq ($(CONFIG_OF),y) +dtb-$(CONFIG_ARCH_BCM2708) += bcm2708-rpi-b.dtb +dtb-$(CONFIG_ARCH_BCM2708) += bcm2708-rpi-b-plus.dtb +dtb-$(CONFIG_ARCH_BCM2708) += bcm2708-rpi-cm.dtb +dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-cm.dtb +dtb-$(CONFIG_ARCH_BCM2709) += bcm2709-rpi-2-b.dtb + +# Raspberry Pi +ifeq ($(CONFIG_ARCH_BCM2708),y) + RPI_DT_OVERLAYS=y +endif +ifeq ($(CONFIG_ARCH_BCM2709),y) + RPI_DT_OVERLAYS=y +endif +ifeq ($(CONFIG_ARCH_BCM2835),y) + RPI_DT_OVERLAYS=y +endif +ifeq ($(RPI_DT_OVERLAYS),y) + dts-dirs += overlays +endif + dtb-$(CONFIG_ARCH_ALPINE) += \ alpine-db.dtb dtb-$(CONFIG_MACH_ASM9260) += \ @@ -777,10 +797,20 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \ mt8127-moose.dtb \ mt8135-evbp1.dtb dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb + +targets += dtbs dtbs_install +targets += $(dtb-y) + endif dtstree := $(srctree)/$(src) dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts)) always := $(dtb-y) +subdir-y := $(dts-dirs) clean-files := *.dtb + +# Enable fixups to support overlays on BCM2708 platforms +ifeq ($(RPI_DT_OVERLAYS),y) + DTC_FLAGS ?= -@ +endif --- /dev/null +++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts @@ -0,0 +1,145 @@ +/dts-v1/; + +#include "bcm2708.dtsi" + +/ { + compatible = "brcm,bcm2708"; + model = "Raspberry Pi Model B+"; +}; + +&gpio { + sdhost_pins: sdhost_pins { + brcm,pins = <48 49 50 51 52 53>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_pins: spi0_pins { + brcm,pins = <9 10 11>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_cs_pins: spi0_cs_pins { + brcm,pins = <8 7>; + brcm,function = <1>; /* output */ + }; + + i2c0_pins: i2c0 { + brcm,pins = <0 1>; + brcm,function = <4>; + }; + + i2c1_pins: i2c1 { + brcm,pins = <2 3>; + brcm,function = <4>; + }; + + i2s_pins: i2s { + brcm,pins = <18 19 20 21>; + brcm,function = <4>; /* alt0 */ + }; +}; + +&sdhost { + pinctrl-names = "default"; + pinctrl-0 = <&sdhost_pins>; + bus-width = <4>; + status = "okay"; +}; + +&fb { + status = "okay"; +}; + +&uart0 { + status = "okay"; +}; + +&spi0 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins &spi0_cs_pins>; + cs-gpios = <&gpio 8 1>, <&gpio 7 1>; + + spidev@0{ + compatible = "spidev"; + reg = <0>; /* CE0 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; + + spidev@1{ + compatible = "spidev"; + reg = <1>; /* CE1 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; +}; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + clock-frequency = <100000>; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + clock-frequency = <100000>; +}; + +&i2c2 { + clock-frequency = <100000>; +}; + +&i2s { + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s_pins>; +}; + +&random { + status = "okay"; +}; + +&leds { + act_led: act { + label = "led0"; + linux,default-trigger = "mmc0"; + gpios = <&gpio 47 0>; + }; + + pwr_led: pwr { + label = "led1"; + linux,default-trigger = "input"; + gpios = <&gpio 35 0>; + }; +}; + +/ { + __overrides__ { + uart0 = <&uart0>,"status"; + uart0_clkrate = <&clk_uart0>,"clock-frequency:0"; + i2s = <&i2s>,"status"; + spi = <&spi0>,"status"; + i2c0 = <&i2c0>,"status"; + i2c1 = <&i2c1>,"status"; + i2c2_iknowwhatimdoing = <&i2c2>,"status"; + i2c0_baudrate = <&i2c0>,"clock-frequency:0"; + i2c1_baudrate = <&i2c1>,"clock-frequency:0"; + i2c2_baudrate = <&i2c2>,"clock-frequency:0"; + core_freq = <&clk_core>,"clock-frequency:0"; + + act_led_gpio = <&act_led>,"gpios:4"; + act_led_activelow = <&act_led>,"gpios:8"; + act_led_trigger = <&act_led>,"linux,default-trigger"; + + pwr_led_gpio = <&pwr_led>,"gpios:4"; + pwr_led_activelow = <&pwr_led>,"gpios:8"; + pwr_led_trigger = <&pwr_led>,"linux,default-trigger"; + + audio = <&audio>,"status"; + watchdog = <&watchdog>,"status"; + random = <&random>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts @@ -0,0 +1,135 @@ +/dts-v1/; + +#include "bcm2708.dtsi" + +/ { + compatible = "brcm,bcm2708"; + model = "Raspberry Pi Model B"; +}; + +&gpio { + sdhost_pins: sdhost_pins { + brcm,pins = <48 49 50 51 52 53>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_pins: spi0_pins { + brcm,pins = <9 10 11>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_cs_pins: spi0_cs_pins { + brcm,pins = <8 7>; + brcm,function = <1>; /* output */ + }; + + i2c0_pins: i2c0 { + brcm,pins = <0 1>; + brcm,function = <4>; + }; + + i2c1_pins: i2c1 { + brcm,pins = <2 3>; + brcm,function = <4>; + }; + + i2s_pins: i2s { + brcm,pins = <28 29 30 31>; + brcm,function = <6>; /* alt2 */ + }; +}; + +&sdhost { + pinctrl-names = "default"; + pinctrl-0 = <&sdhost_pins>; + bus-width = <4>; + status = "okay"; +}; + +&fb { + status = "okay"; +}; + +&uart0 { + status = "okay"; +}; + +&spi0 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins &spi0_cs_pins>; + cs-gpios = <&gpio 8 1>, <&gpio 7 1>; + + spidev@0{ + compatible = "spidev"; + reg = <0>; /* CE0 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; + + spidev@1{ + compatible = "spidev"; + reg = <1>; /* CE1 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; +}; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + clock-frequency = <100000>; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + clock-frequency = <100000>; +}; + +&i2c2 { + clock-frequency = <100000>; +}; + +&i2s { + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s_pins>; +}; + +&random { + status = "okay"; +}; + +&leds { + act_led: act { + label = "led0"; + linux,default-trigger = "mmc0"; + gpios = <&gpio 16 1>; + }; +}; + +/ { + __overrides__ { + uart0 = <&uart0>,"status"; + uart0_clkrate = <&clk_uart0>,"clock-frequency:0"; + i2s = <&i2s>,"status"; + spi = <&spi0>,"status"; + i2c0 = <&i2c0>,"status"; + i2c1 = <&i2c1>,"status"; + i2c2_iknowwhatimdoing = <&i2c2>,"status"; + i2c0_baudrate = <&i2c0>,"clock-frequency:0"; + i2c1_baudrate = <&i2c1>,"clock-frequency:0"; + i2c2_baudrate = <&i2c2>,"clock-frequency:0"; + core_freq = <&clk_core>,"clock-frequency:0"; + + act_led_gpio = <&act_led>,"gpios:4"; + act_led_activelow = <&act_led>,"gpios:8"; + act_led_trigger = <&act_led>,"linux,default-trigger"; + + audio = <&audio>,"status"; + watchdog = <&watchdog>,"status"; + random = <&random>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts @@ -0,0 +1,102 @@ +/dts-v1/; + +#include "bcm2708-rpi-cm.dtsi" + +/ { + model = "Raspberry Pi Compute Module"; +}; + +&uart0 { + status = "okay"; +}; + +&gpio { + spi0_pins: spi0_pins { + brcm,pins = <9 10 11>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_cs_pins: spi0_cs_pins { + brcm,pins = <8 7>; + brcm,function = <1>; /* output */ + }; + + i2c0_pins: i2c0 { + brcm,pins = <0 1>; + brcm,function = <4>; + }; + + i2c1_pins: i2c1 { + brcm,pins = <2 3>; + brcm,function = <4>; + }; + + i2s_pins: i2s { + brcm,pins = <18 19 20 21>; + brcm,function = <4>; /* alt0 */ + }; +}; + +&spi0 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins &spi0_cs_pins>; + cs-gpios = <&gpio 8 1>, <&gpio 7 1>; + + spidev@0{ + compatible = "spidev"; + reg = <0>; /* CE0 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; + + spidev@1{ + compatible = "spidev"; + reg = <1>; /* CE1 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; +}; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + clock-frequency = <100000>; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + clock-frequency = <100000>; +}; + +&i2c2 { + clock-frequency = <100000>; +}; + +&i2s { + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s_pins>; +}; + +&random { + status = "okay"; +}; + +/ { + __overrides__ { + uart0 = <&uart0>,"status"; + uart0_clkrate = <&clk_uart0>,"clock-frequency:0"; + i2s = <&i2s>,"status"; + spi = <&spi0>,"status"; + i2c0 = <&i2c0>,"status"; + i2c1 = <&i2c1>,"status"; + i2c2_iknowwhatimdoing = <&i2c2>,"status"; + i2c0_baudrate = <&i2c0>,"clock-frequency:0"; + i2c1_baudrate = <&i2c1>,"clock-frequency:0"; + i2c2_baudrate = <&i2c2>,"clock-frequency:0"; + core_freq = <&clk_core>,"clock-frequency:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi @@ -0,0 +1,40 @@ +#include "bcm2708.dtsi" + +&gpio { + sdhost_pins: sdhost_pins { + brcm,pins = <48 49 50 51 52 53>; + brcm,function = <4>; /* alt0 */ + }; +}; + +&leds { + act_led: act { + label = "led0"; + linux,default-trigger = "mmc0"; + gpios = <&gpio 47 0>; + }; +}; + +&sdhost { + pinctrl-names = "default"; + pinctrl-0 = <&sdhost_pins>; + bus-width = <4>; + non-removable; + status = "okay"; +}; + +&fb { + status = "okay"; +}; + +/ { + __overrides__ { + act_led_gpio = <&act_led>,"gpios:4"; + act_led_activelow = <&act_led>,"gpios:8"; + act_led_trigger = <&act_led>,"linux,default-trigger"; + + audio = <&audio>,"status"; + watchdog = <&watchdog>,"status"; + random = <&random>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2708.dtsi @@ -0,0 +1,40 @@ +#include "bcm2708_common.dtsi" + +/ { + compatible = "brcm,bcm2708"; + model = "BCM2708"; + + chosen { + /* No padding required - the boot loader can do that. */ + bootargs = ""; + }; + + soc { + ranges = <0x7e000000 0x20000000 0x01000000>; + + timer@7e003000 { + compatible = "brcm,bcm2835-system-timer"; + reg = <0x7e003000 0x1000>; + interrupts = <1 0>, <1 1>, <1 2>, <1 3>; + clock-frequency = <1000000>; + }; + + arm-pmu { + compatible = "arm,arm1176-pmu"; + }; + + gpiomem { + compatible = "brcm,bcm2835-gpiomem"; + reg = <0x7e200000 0x1000>; + status = "okay"; + }; + }; +}; + +&intc { + compatible = "brcm,bcm2835-armctrl-ic"; +}; + +&watchdog { + status = "okay"; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2708_common.dtsi @@ -0,0 +1,347 @@ +#include "skeleton.dtsi" + +/ { + interrupt-parent = <&intc>; + + aliases { + audio = &audio; + sound = &sound; + soc = &soc; + dma = &dma; + intc = &intc; + watchdog = &watchdog; + random = &random; + mailbox = &mailbox; + gpio = &gpio; + uart0 = &uart0; + sdhost = &sdhost; + i2s = &i2s; + spi0 = &spi0; + i2c0 = &i2c0; + uart1 = &uart1; + mmc = &mmc; + i2c1 = &i2c1; + i2c2 = &i2c2; + usb = &usb; + leds = &leds; + fb = &fb; + vchiq = &vchiq; + thermal = &thermal; + clocks = &clocks; + }; + + /* Onboard audio */ + audio: audio { + compatible = "brcm,bcm2835-audio"; + brcm,pwm-channels = <8>; + status = "disabled"; + }; + + /* External sound card */ + sound: sound { + }; + + soc: soc { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + + dma: dma@7e007000 { + compatible = "brcm,bcm2835-dma"; + reg = <0x7e007000 0xf00>; + interrupts = <1 16>, + <1 17>, + <1 18>, + <1 19>, + <1 20>, + <1 21>, + <1 22>, + <1 23>, + <1 24>, + <1 25>, + <1 26>, + <1 27>; + + #dma-cells = <1>; + brcm,dma-channel-mask = <0x0f35>; + }; + + intc: interrupt-controller@7e00b200 { + compatible = "brcm,bcm2708-armctrl-ic"; + reg = <0x7e00b200 0x200>; + interrupt-controller; + #interrupt-cells = <2>; + }; + + mailbox: mailbox@7e00b800 { + compatible = "brcm,bcm2835-mbox"; + reg = <0x7e00b880 0x40>; + interrupts = <0 1>; + #mbox-cells = <0>; + }; + + watchdog: watchdog@7e100000 { + compatible = "brcm,bcm2835-pm-wdt"; + reg = <0x7e100000 0x28>; + status = "disabled"; + }; + + cprman: cprman@7e101000 { + compatible = "brcm,bcm2835-cprman"; + #clock-cells = <1>; + reg = <0x7e101000 0x2000>; + + /* CPRMAN derives everything from the platform's + * oscillator. + */ + clocks = <&clk_osc>; + status = "disabled"; + }; + + random: rng@7e104000 { + compatible = "brcm,bcm2835-rng"; + reg = <0x7e104000 0x10>; + status = "disabled"; + }; + + gpio: gpio@7e200000 { + compatible = "brcm,bcm2835-gpio"; + reg = <0x7e200000 0xb4>; + interrupts = <2 17>, <2 18>; + + gpio-controller; + #gpio-cells = <2>; + + interrupt-controller; + #interrupt-cells = <2>; + }; + + uart0: uart@7e201000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x7e201000 0x1000>; + interrupts = <2 25>; + clocks = <&clk_uart0 &clk_apb_p>; + clock-names = "uartclk","apb_pclk"; + arm,primecell-periphid = <0x00241011>; // For an explanation, see + // https://github.com/raspberrypi/linux/commit/13731d862cf5219216533a3b0de052cee4cc5038 + status = "disabled"; + }; + + sdhost: sdhost@7e202000 { + compatible = "brcm,bcm2835-sdhost"; + reg = <0x7e202000 0x100>; + interrupts = <2 24>; + clocks = <&clk_core>; + dmas = <&dma 13>, + <&dma 13>; + dma-names = "tx", "rx"; + brcm,pio-limit = <1>; + status = "disabled"; + }; + + i2s: i2s@7e203000 { + compatible = "brcm,bcm2835-i2s"; + reg = <0x7e203000 0x24>, + <0x7e101098 0x08>; + + dmas = <&dma 2>, <&dma 3>; + dma-names = "tx", "rx"; + status = "disabled"; + }; + + spi0: spi@7e204000 { + compatible = "brcm,bcm2835-spi"; + reg = <0x7e204000 0x1000>; + interrupts = <2 22>; + clocks = <&clk_core>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + /* the dma channels */ + dmas = <&dma 6>, <&dma 7>; + dma-names = "tx", "rx"; + /* the chipselects used - <0> means native GPIO + * add more gpios if necessary as <&gpio 6 1> + * (but do not forget to make them output!) + */ + cs-gpios = <0>, <0>; + }; + + i2c0: i2c@7e205000 { + compatible = "brcm,bcm2708-i2c"; + reg = <0x7e205000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_core>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + pwm: pwm@7e20c000 { + compatible = "brcm,bcm2835-pwm"; + reg = <0x7e20c000 0x28>; + clocks = <&clk_pwm>; + #pwm-cells = <2>; + status = "disabled"; + }; + + uart1: uart@7e215040 { + compatible = "brcm,bcm2835-aux-uart", "ns16550"; + reg = <0x7e215040 0x40>; + interrupts = <1 29>; + clocks = <&clk_uart1>; + reg-shift = <2>; + no-loopback-test; + status = "disabled"; + }; + + mmc: mmc@7e300000 { + compatible = "brcm,bcm2835-mmc"; + reg = <0x7e300000 0x100>; + interrupts = <2 30>; + clocks = <&clk_mmc>; + dmas = <&dma 11>, + <&dma 11>; + dma-names = "tx", "rx"; + status = "disabled"; + }; + + i2c1: i2c@7e804000 { + compatible = "brcm,bcm2708-i2c"; + reg = <0x7e804000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_core>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + i2c2: i2c@7e805000 { + // Beware - this is shared with the HDMI module. + // Careless use may break (really) your display. + // Caveat emptor. + compatible = "brcm,bcm2708-i2c"; + reg = <0x7e805000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_core>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; + + smi: smi@7e600000 { + compatible = "brcm,bcm2835-smi"; + reg = <0x7e600000 0x44>, <0x7e1010b0 0x8>; + interrupts = <2 16>; + brcm,smi-clock-source = <6>; + brcm,smi-clock-divisor = <4>; + dmas = <&dma 4>; + dma-names = "rx-tx"; + status = "disabled"; + }; + + usb: usb@7e980000 { + compatible = "brcm,bcm2708-usb"; + reg = <0x7e980000 0x10000>, + <0x7e006000 0x1000>; + interrupts = <2 0>, + <1 9>; + }; + + firmware: firmware { + compatible = "raspberrypi,bcm2835-firmware"; + mboxes = <&mailbox>; + }; + + leds: leds { + compatible = "gpio-leds"; + }; + + fb: fb { + compatible = "brcm,bcm2708-fb"; + firmware = <&firmware>; + status = "disabled"; + }; + + vchiq: vchiq { + compatible = "brcm,bcm2835-vchiq"; + reg = <0x7e00b840 0xf>; + interrupts = <0 2>; + cache-line-size = <32>; + firmware = <&firmware>; + }; + + thermal: thermal { + compatible = "brcm,bcm2835-thermal"; + firmware = <&firmware>; + }; + }; + + clocks: clocks { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <0>; + + clk_core: clock@0 { + compatible = "fixed-clock"; + reg = <0>; + #clock-cells = <0>; + clock-output-names = "core"; + clock-frequency = <250000000>; + }; + + clk_mmc: clock@1 { + compatible = "fixed-clock"; + reg = <1>; + #clock-cells = <0>; + clock-output-names = "mmc"; + clock-frequency = <250000000>; + }; + + clk_uart0: clock@2 { + compatible = "fixed-clock"; + reg = <2>; + #clock-cells = <0>; + clock-output-names = "uart0_pclk"; + clock-frequency = <3000000>; + }; + + clk_apb_p: clock@3 { + compatible = "fixed-clock"; + reg = <3>; + #clock-cells = <0>; + clock-output-names = "apb_pclk"; + clock-frequency = <126000000>; + }; + + clk_pwm: clock@4 { + compatible = "fixed-clock"; + reg = <4>; + #clock-cells = <0>; + clock-output-names = "pwm"; + clock-frequency = <100000000>; + }; + + clk_uart1: clock@5 { + compatible = "fixed-factor-clock"; + reg = <5>; + clocks = <&clk_core>; + #clock-cells = <0>; + clock-div = <1>; + clock-mult = <2>; + }; + + /* The oscillator is the root of the clock tree. */ + clk_osc: clock@6 { + compatible = "fixed-clock"; + reg = <6>; + #clock-cells = <0>; + clock-output-names = "osc"; + clock-frequency = <19200000>; + }; + }; + + __overrides__ { + cache_line_size = <&vchiq>, "cache-line-size:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts @@ -0,0 +1,145 @@ +/dts-v1/; + +#include "bcm2709.dtsi" + +/ { + compatible = "brcm,bcm2709"; + model = "Raspberry Pi 2 Model B"; +}; + +&gpio { + sdhost_pins: sdhost_pins { + brcm,pins = <48 49 50 51 52 53>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_pins: spi0_pins { + brcm,pins = <9 10 11>; + brcm,function = <4>; /* alt0 */ + }; + + spi0_cs_pins: spi0_cs_pins { + brcm,pins = <8 7>; + brcm,function = <1>; /* output */ + }; + + i2c0_pins: i2c0 { + brcm,pins = <0 1>; + brcm,function = <4>; + }; + + i2c1_pins: i2c1 { + brcm,pins = <2 3>; + brcm,function = <4>; + }; + + i2s_pins: i2s { + brcm,pins = <18 19 20 21>; + brcm,function = <4>; /* alt0 */ + }; +}; + +&sdhost { + pinctrl-names = "default"; + pinctrl-0 = <&sdhost_pins>; + bus-width = <4>; + status = "okay"; +}; + +&fb { + status = "okay"; +}; + +&uart0 { + status = "okay"; +}; + +&spi0 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins &spi0_cs_pins>; + cs-gpios = <&gpio 8 1>, <&gpio 7 1>; + + spidev@0{ + compatible = "spidev"; + reg = <0>; /* CE0 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; + + spidev@1{ + compatible = "spidev"; + reg = <1>; /* CE1 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; +}; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + clock-frequency = <100000>; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + clock-frequency = <100000>; +}; + +&i2c2 { + clock-frequency = <100000>; +}; + +&i2s { + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s_pins>; +}; + +&random { + status = "okay"; +}; + +&leds { + act_led: act { + label = "led0"; + linux,default-trigger = "mmc0"; + gpios = <&gpio 47 0>; + }; + + pwr_led: pwr { + label = "led1"; + linux,default-trigger = "input"; + gpios = <&gpio 35 0>; + }; +}; + +/ { + __overrides__ { + uart0 = <&uart0>,"status"; + uart0_clkrate = <&clk_uart0>,"clock-frequency:0"; + i2s = <&i2s>,"status"; + spi = <&spi0>,"status"; + i2c0 = <&i2c0>,"status"; + i2c1 = <&i2c1>,"status"; + i2c2_iknowwhatimdoing = <&i2c2>,"status"; + i2c0_baudrate = <&i2c0>,"clock-frequency:0"; + i2c1_baudrate = <&i2c1>,"clock-frequency:0"; + i2c2_baudrate = <&i2c2>,"clock-frequency:0"; + core_freq = <&clk_core>,"clock-frequency:0"; + + act_led_gpio = <&act_led>,"gpios:4"; + act_led_activelow = <&act_led>,"gpios:8"; + act_led_trigger = <&act_led>,"linux,default-trigger"; + + pwr_led_gpio = <&pwr_led>,"gpios:4"; + pwr_led_activelow = <&pwr_led>,"gpios:8"; + pwr_led_trigger = <&pwr_led>,"linux,default-trigger"; + + audio = <&audio>,"status"; + watchdog = <&watchdog>,"status"; + random = <&random>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2709.dtsi @@ -0,0 +1,102 @@ +#include "bcm2708_common.dtsi" + +/ { + compatible = "brcm,bcm2709"; + model = "BCM2709"; + + chosen { + /* No padding required - the boot loader can do that. */ + bootargs = ""; + }; + + soc { + ranges = <0x7e000000 0x3f000000 0x01000000>, + <0x40000000 0x40000000 0x00040000>; + + local_intc: local_intc { + compatible = "brcm,bcm2836-l1-intc"; + reg = <0x40000000 0x100>; + interrupt-controller; + #interrupt-cells = <1>; + interrupt-parent = <&local_intc>; + }; + + arm-pmu { + compatible = "arm,cortex-a7-pmu"; + interrupt-parent = <&local_intc>; + interrupts = <9>; + }; + + gpiomem { + compatible = "brcm,bcm2835-gpiomem"; + reg = <0x7e200000 0x1000>; + status = "okay"; + }; + + timer { + compatible = "arm,armv7-timer"; + clock-frequency = <19200000>; + interrupt-parent = <&local_intc>; + interrupts = <0>, // PHYS_SECURE_PPI + <1>, // PHYS_NONSECURE_PPI + <3>, // VIRT_PPI + <2>; // HYP_PPI + always-on; + }; + + syscon@40000000 { + compatible = "brcm,bcm2836-arm-local", "syscon"; + reg = <0x40000000 0x100>; + }; + }; + + cpus: cpus { + #address-cells = <1>; + #size-cells = <0>; + + v7_cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf00>; + clock-frequency = <800000000>; + }; + + v7_cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf01>; + clock-frequency = <800000000>; + }; + + v7_cpu2: cpu@2 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf02>; + clock-frequency = <800000000>; + }; + + v7_cpu3: cpu@3 { + device_type = "cpu"; + compatible = "arm,cortex-a7"; + reg = <0xf03>; + clock-frequency = <800000000>; + }; + }; + + __overrides__ { + arm_freq = <&v7_cpu0>, "clock-frequency:0", + <&v7_cpu1>, "clock-frequency:0", + <&v7_cpu2>, "clock-frequency:0", + <&v7_cpu3>, "clock-frequency:0"; + }; +}; + +&watchdog { + status = "okay"; +}; + +&intc { + compatible = "brcm,bcm2836-armctrl-ic"; + interrupt-parent = <&local_intc>; + interrupts = <8>; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2835-rpi-cm.dts @@ -0,0 +1,93 @@ +/dts-v1/; + +#include "bcm2835-rpi-cm.dtsi" + +/ { + model = "Raspberry Pi Compute Module"; +}; + +&uart0 { + status = "okay"; +}; + +&gpio { + spi0_pins: spi0_pins { + brcm,pins = <7 8 9 10 11>; + brcm,function = <4>; /* alt0 */ + }; + + i2c0_pins: i2c0 { + brcm,pins = <0 1>; + brcm,function = <4>; + }; + + i2c1_pins: i2c1 { + brcm,pins = <2 3>; + brcm,function = <4>; + }; + + i2s_pins: i2s { + brcm,pins = <18 19 20 21>; + brcm,function = <4>; /* alt0 */ + }; +}; + +&spi0 { + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins>; + + spidev@0{ + compatible = "spidev"; + reg = <0>; /* CE0 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; + + spidev@1{ + compatible = "spidev"; + reg = <1>; /* CE1 */ + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <500000>; + }; +}; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + clock-frequency = <100000>; +}; + +&i2c1 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c1_pins>; + clock-frequency = <100000>; +}; + +&i2c2 { + clock-frequency = <100000>; +}; + +&i2s { + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s_pins>; +}; + +/ { + __overrides__ { + uart0 = <&uart0>,"status"; + uart0_clkrate = <&clk_uart0>,"clock-frequency:0"; + uart1_clkrate = <&uart1>,"clock-frequency:0"; + i2s = <&i2s>,"status"; + spi = <&spi0>,"status"; + i2c0 = <&i2c0>,"status"; + i2c1 = <&i2c1>,"status"; + i2c2_iknowwhatimdoing = <&i2c2>,"status"; + i2c0_baudrate = <&i2c0>,"clock-frequency:0"; + i2c1_baudrate = <&i2c1>,"clock-frequency:0"; + i2c2_baudrate = <&i2c2>,"clock-frequency:0"; + core_freq = <&clk_core>,"clock-frequency:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/bcm2835-rpi-cm.dtsi @@ -0,0 +1,30 @@ +#include "bcm2835.dtsi" + +&leds { + act_led: act { + label = "led0"; + linux,default-trigger = "mmc0"; + gpios = <&gpio 47 0>; + }; +}; + +&mmc { + status = "okay"; + bus-width = <4>; +}; + +&fb { + status = "okay"; +}; + +/ { + __overrides__ { + act_led_gpio = <&act_led>,"gpios:4"; + act_led_activelow = <&act_led>,"gpios:8"; + act_led_trigger = <&act_led>,"linux,default-trigger"; + + audio = <&audio>,"status"; + watchdog = <&watchdog>,"status"; + random = <&random>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/Makefile @@ -0,0 +1,69 @@ +ifeq ($(CONFIG_OF),y) + +# Overlays for the Raspberry Pi platform + +ifeq ($(CONFIG_ARCH_BCM2708),y) + RPI_DT_OVERLAYS=y +endif +ifeq ($(CONFIG_ARCH_BCM2709),y) + RPI_DT_OVERLAYS=y +endif +ifeq ($(CONFIG_ARCH_BCM2835),y) + RPI_DT_OVERLAYS=y +endif + +dtb-$(RPI_DT_OVERLAYS) += ads7846-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hifiberry-digi-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += hy28b-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += i2s-mmap-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += mcp2515-can1-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += pwm-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += pwm-2chan-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += raspidac3-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += rpi-ft5406-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += rpi-sense-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += sdio-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += smi-dev-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += smi-nand-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += smi-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += spi-gpio35-39-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += uart1-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += vga666-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb +dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb + +targets += dtbs dtbs_install +targets += $(dtb-y) + +endif + +always := $(dtb-y) +clean-files := *.dtb + +# Enable fixups to support overlays on BCM2708 platforms +ifeq ($(RPI_DT_OVERLAYS),y) + DTC_FLAGS ?= -@ +endif --- /dev/null +++ b/arch/arm/boot/dts/overlays/README @@ -0,0 +1,648 @@ +Introduction +============ + +This directory contains Device Tree overlays. Device Tree makes it possible +to support many hardware configurations with a single kernel and without the +need to explicitly load or blacklist kernel modules. Note that this isn't a +"pure" Device Tree configuration (c.f. MACH_BCM2835) - some on-board devices +are still configured by the board support code, but the intention is to +eventually reach that goal. + +On Raspberry Pi, Device Tree usage is controlled from /boot/config.txt. By +default, the Raspberry Pi kernel boots with device tree enabled. You can +completely disable DT usage (for now) by adding: + + device_tree= + +to your config.txt, which should cause your Pi to revert to the old way of +doing things after a reboot. + +In /boot you will find a .dtb for each base platform. This describes the +hardware that is part of the Raspberry Pi board. The loader (start.elf and its +siblings) selects the .dtb file appropriate for the platform by name, and reads +it into memory. At this point, all of the optional interfaces (i2c, i2s, spi) +are disabled, but they can be enabled using Device Tree parameters: + + dtparam=i2c=on,i2s=on,spi=on + +However, this shouldn't be necessary in many use cases because loading an +overlay that requires one of those interfaces will cause it to be enabled +automatically, and it is advisable to only enable interfaces if they are +needed. + +Configuring additional, optional hardware is done using Device Tree overlays +(see below). + +raspi-config +============ + +The Advanced Options section of the raspi-config utility can enable and disable +Device Tree use, as well as toggling the I2C and SPI interfaces. Note that it +is possible to both enable an interface and blacklist the driver, if for some +reason you should want to defer the loading. + +Modules +======= + +As well as describing the hardware, Device Tree also gives enough information +to allow suitable driver modules to be located and loaded, with the corollary +that unneeded modules are not loaded. As a result it should be possible to +remove lines from /etc/modules, and /etc/modprobe.d/raspi-blacklist.conf can +have its contents deleted (or commented out). + +Using Overlays +============== + +Overlays are loaded using the "dtoverlay" directive. As an example, consider the +popular lirc-rpi module, the Linux Infrared Remote Control driver. In the +pre-DT world this would be loaded from /etc/modules, with an explicit +"modprobe lirc-rpi" command, or programmatically by lircd. With DT enabled, +this becomes a line in config.txt: + + dtoverlay=lirc-rpi + +This causes the file /boot/overlays/lirc-rpi-overlay.dtb to be loaded. By +default it will use GPIOs 17 (out) and 18 (in), but this can be modified using +DT parameters: + + dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13 + +Parameters always have default values, although in some cases (e.g. "w1-gpio") +it is necessary to provided multiple overlays in order to get the desired +behaviour. See the list of overlays below for a description of the parameters and their defaults. + +The Overlay and Parameter Reference +=================================== + +N.B. When editing this file, please preserve the indentation levels to make it simple to parse +programmatically. NO HARD TABS. + + +Name: +Info: Configures the base Raspberry Pi hardware +Load: +Params: + audio Set to "on" to enable the onboard ALSA audio + interface (default "off") + + i2c_arm Set to "on" to enable the ARM's i2c interface + (default "off") + + i2c_vc Set to "on" to enable the i2c interface + usually reserved for the VideoCore processor + (default "off") + + i2c An alias for i2c_arm + + i2c_arm_baudrate Set the baudrate of the ARM's i2c interface + (default "100000") + + i2c_vc_baudrate Set the baudrate of the VideoCore i2c interface + (default "100000") + + i2c_baudrate An alias for i2c_arm_baudrate + + i2s Set to "on" to enable the i2s interface + (default "off") + + spi Set to "on" to enable the spi interfaces + (default "off") + + random Set to "on" to enable the hardware random + number generator (default "on") + + uart0 Set to "off" to disable uart0 (default "on") + + watchdog Set to "on" to enable the hardware watchdog + (default "off") + + act_led_trigger Choose which activity the LED tracks. + Use "heartbeat" for a nice load indicator. + (default "mmc") + + act_led_activelow Set to "on" to invert the sense of the LED + (default "off") + + act_led_gpio Set which GPIO to use for the activity LED + (in case you want to connect it to an external + device) + (default "16" on a non-Plus board, "47" on a + Plus or Pi 2) + + pwr_led_trigger + pwr_led_activelow + pwr_led_gpio + As for act_led_*, but using the PWR LED. + Not available on Model A/B boards. + + N.B. It is recommended to only enable those interfaces that are needed. + Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc + interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.) + Note also that i2c, i2c_arm and i2c_vc are aliases for the physical + interfaces i2c0 and i2c1. Use of the numeric variants is still possible + but deprecated because the ARM/VC assignments differ between board + revisions. The same board-specific mapping applies to i2c_baudrate, + and the other i2c baudrate parameters. + + +Name: ads7846 +Info: ADS7846 Touch controller +Load: dtoverlay=ads7846,= +Params: cs SPI bus Chip Select (default 1) + speed SPI bus speed (default 2Mhz, max 3.25MHz) + penirq GPIO used for PENIRQ. REQUIRED + penirq_pull Set GPIO pull (default 0=none, 2=pullup) + swapxy Swap x and y axis + xmin Minimum value on the X axis (default 0) + ymin Minimum value on the Y axis (default 0) + xmax Maximum value on the X axis (default 4095) + ymax Maximum value on the Y axis (default 4095) + pmin Minimum reported pressure value (default 0) + pmax Maximum reported pressure value (default 65535) + xohms Touchpanel sensitivity (X-plate resistance) + (default 400) + + penirq is required and usually xohms (60-100) has to be set as well. + Apart from that, pmax (255) and swapxy are also common. + The rest of the calibration can be done with xinput-calibrator. + See: github.com/notro/fbtft/wiki/FBTFT-on-Raspian + Device Tree binding document: + www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt + + +Name: bmp085_i2c-sensor +Info: Configures the BMP085/BMP180 digital barometric pressure and temperature + sensors from Bosch Sensortec +Load: dtoverlay=bmp085_i2c-sensor +Params: + + +Name: dht11 +Info: Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors + Also sometimes found with the part number(s) AM230x. +Load: dtoverlay=dht11,= +Params: gpiopin GPIO connected to the sensor's DATA output. + (default 4) + + +[ The ds1307-rtc overlay has been deleted. See i2c-rtc. ] + + +Name: enc28j60 +Info: Overlay for the Microchip ENC28J60 Ethernet Controller (SPI) +Load: dtoverlay=enc28j60,= +Params: int_pin GPIO used for INT (default 25) + + speed SPI bus speed (default 12000000) + + +Name: gpio-poweroff +Info: Drives a GPIO high or low on reboot +Load: dtoverlay=gpio-poweroff,= +Params: gpiopin GPIO for signalling (default 26) + + active_low Set if the power control device requires a + high->low transition to trigger a power-down. + Note that this will require the support of a + custom dt-blob.bin to prevent a power-down + during the boot process, and that a reboot + will also cause the pin to go low. + + +Name: hifiberry-amp +Info: Configures the HifiBerry Amp and Amp+ audio cards +Load: dtoverlay=hifiberry-amp +Params: + + +Name: hifiberry-dac +Info: Configures the HifiBerry DAC audio card +Load: dtoverlay=hifiberry-dac +Params: + + +Name: hifiberry-dacplus +Info: Configures the HifiBerry DAC+ audio card +Load: dtoverlay=hifiberry-dacplus +Params: + + +Name: hifiberry-digi +Info: Configures the HifiBerry Digi audio card +Load: dtoverlay=hifiberry-digi +Params: + + +Name: hy28a +Info: HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics + Default values match Texy's display shield +Load: dtoverlay=hy28a,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + xohms Touchpanel sensitivity (X-plate resistance) + + resetgpio GPIO used to reset controller + + ledgpio GPIO used to control backlight + + +Name: hy28b +Info: HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics + Default values match Texy's display shield +Load: dtoverlay=hy28b,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + xohms Touchpanel sensitivity (X-plate resistance) + + resetgpio GPIO used to reset controller + + ledgpio GPIO used to control backlight + + +Name: i2c-rtc +Info: Adds support for a number of I2C Real Time Clock devices +Load: dtoverlay=i2c-rtc, +Params: ds1307 Select the DS1307 device + + ds3231 Select the DS3231 device + + mcp7941x Select the MCP7941x device + + pcf2127 Select the PCF2127 device + + pcf8523 Select the PCF8523 device + + pcf8563 Select the PCF8563 device + + +Name: i2s-mmap +Info: Enables mmap support in the bcm2708-i2s driver +Load: dtoverlay=i2s-mmap +Params: + + +Name: iqaudio-dac +Info: Configures the IQaudio DAC audio card +Load: dtoverlay=iqaudio-dac +Params: + + +Name: iqaudio-dacplus +Info: Configures the IQaudio DAC+ audio card +Load: dtoverlay=iqaudio-dacplus +Params: + + +Name: lirc-rpi +Info: Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi) + Consult the module documentation for more details. +Load: dtoverlay=lirc-rpi,=,... +Params: gpio_out_pin GPIO for output (default "17") + + gpio_in_pin GPIO for input (default "18") + + gpio_in_pull Pull up/down/off on the input pin + (default "down") + + sense Override the IR receive auto-detection logic: + "0" = force active-high + "1" = force active-low + "-1" = use auto-detection + (default "-1") + + softcarrier Turn the software carrier "on" or "off" + (default "on") + + invert "on" = invert the output pin (default "off") + + debug "on" = enable additional debug messages + (default "off") + + +Name: mcp2515-can0 +Info: Configures the MCP2515 CAN controller on spi0.0 +Load: dtoverlay=mcp2515-can0,= +Params: oscillator Clock frequency for the CAN controller (Hz) + + spimaxfrequency Maximum SPI frequence (Hz) + + interrupt GPIO for interrupt signal + + +Name: mcp2515-can1 +Info: Configures the MCP2515 CAN controller on spi0.1 +Load: dtoverlay=mcp2515-can1,= +Params: oscillator Clock frequency for the CAN controller (Hz) + + spimaxfrequency Maximum SPI frequence (Hz) + + interrupt GPIO for interrupt signal + + +Name: mmc +Info: Selects the bcm2835-mmc SD/MMC driver, optionally with overclock +Load: dtoverlay=mmc,= +Params: overclock_50 Clock (in MHz) to use when the MMC framework + requests 50MHz + force_pio Disable DMA support + + +Name: mz61581 +Info: MZ61581 display by Tontec +Load: dtoverlay=mz61581,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + txbuflen Transmit buffer length (default 32768) + + debug Debug output level {0-7} + + xohms Touchpanel sensitivity (X-plate resistance) + + +[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ] + + +[ The pcf8523-rtc overlay has been deleted. See i2c-rtc. ] + + +[ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ] + + +Name: piscreen +Info: PiScreen display by OzzMaker.com +Load: dtoverlay=piscreen,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + xohms Touchpanel sensitivity (X-plate resistance) + + +Name: pitft28-resistive +Info: Adafruit PiTFT 2.8" resistive touch screen +Load: dtoverlay=pitft28-resistive,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + +Name: pps-gpio +Info: Configures the pps-gpio (pulse-per-second time signal via GPIO). +Load: dtoverlay=pps-gpio,= +Params: gpiopin Input GPIO (default "18") + + +Name: pwm +Info: Configures a single PWM channel + Legal pin,function combinations for each channel: + PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1) + PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1) + N.B.: + 1) Pin 18 is the only one available on all platforms, and + it is the one used by the I2S audio interface. + Pins 12 and 13 might be better choices on an A+, B+ or Pi2. + 2) The onboard analogue audio output uses both PWM channels. + 3) So be careful mixing audio and PWM. + 4) Currently the clock must have been enabled and configured + by other means. +Load: dtoverlay=pwm,= +Params: pin Output pin (default 18) - see table + func Pin function (default 2 = Alt5) - see above + clock PWM clock frequency (informational) + + +Name: pwm-2chan +Info: Configures both PWM channels + Legal pin,function combinations for each channel: + PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1) + PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1) + N.B.: + 1) Pin 18 is the only one available on all platforms, and + it is the one used by the I2S audio interface. + Pins 12 and 13 might be better choices on an A+, B+ or Pi2. + 2) The onboard analogue audio output uses both PWM channels. + 3) So be careful mixing audio and PWM. + 4) Currently the clock must have been enabled and configured + by other means. +Load: dtoverlay=pwm-2chan,= +Params: pin Output pin (default 18) - see table + pin2 Output pin for other channel (default 19) + func Pin function (default 2 = Alt5) - see above + func2 Function for pin2 (default 2 = Alt5) + clock PWM clock frequency (informational) + + +Name: raspidac3 +Info: Configures the RaspiDAV Rev.3x audio card +Load: dtoverlay=raspidac3 +Params: + + +Name: rpi-dac +Info: Configures the RPi DAC audio card +Load: dtoverlay=rpi-dac +Params: + + +Name: rpi-display +Info: RPi-Display - 2.8" Touch Display by Watterott +Load: dtoverlay=rpi-display,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + xohms Touchpanel sensitivity (X-plate resistance) + + +Name: rpi-ft5406 +Info: Official Raspberry Pi display touchscreen +Load: dtoverlay=rpi-ft5406 +Params: + + +Name: rpi-proto +Info: Configures the RPi Proto audio card +Load: dtoverlay=rpi-proto +Params: + + +Name: rpi-sense +Info: Raspberry Pi Sense HAT +Load: dtoverlay=rpi-sense +Params: + + +Name: sdhost +Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock +Load: dtoverlay=sdhost,= +Params: overclock_50 Clock (in MHz) to use when the MMC framework + requests 50MHz + + force_pio Disable DMA support (default off) + + pio_limit Number of blocks above which to use DMA + (default 1) + + debug Enable debug output (default off) + + +Name: sdio +Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock, + and enables SDIO via GPIOs 22-27. +Load: dtoverlay=sdio,= +Params: overclock_50 Clock (in MHz) to use when the MMC framework + requests 50MHz + + force_pio Disable DMA support (default off) + + pio_limit Number of blocks above which to use DMA + (default 1) + + debug Enable debug output (default off) + + poll_once Disable SDIO-device polling every second + (default on: polling once at boot-time) + + +Name: smi +Info: Enables the Secondary Memory Interface peripheral. Uses GPIOs 2-25! +Load: dtoverlay=smi +Params: + + +Name: smi-dev +Info: Enables the userspace interface for the SMI driver +Load: dtoverlay=smi-dev +Params: + + +Name: smi-nand +Info: Enables access to NAND flash via the SMI interface +Load: dtoverlay=smi-nand +Params: + + +Name: spi-gpio35-39 +Info: move SPI function block to GPIO 35 to 39 +Load: dtoverlay=spi-gpio35-39 +Params: + + +Name: tinylcd35 +Info: 3.5" Color TFT Display by www.tinylcd.com + Options: Touch, RTC, keypad +Load: dtoverlay=tinylcd35,= +Params: speed Display SPI bus speed + + rotate Display rotation {0,90,180,270} + + fps Delay between frame updates + + debug Debug output level {0-7} + + touch Enable touch panel + + touchgpio Touch controller IRQ GPIO + + xohms Touchpanel: Resistance of X-plate in ohms + + rtc-pcf PCF8563 Real Time Clock + + rtc-ds DS1307 Real Time Clock + + keypad Enable keypad + + Examples: + Display with touchpanel, PCF8563 RTC and keypad: + dtoverlay=tinylcd35,touch,rtc-pcf,keypad + Old touch display: + dtoverlay=tinylcd35,touch,touchgpio=3 + + +Name: uart1 +Info: Enable uart1 in place of uart0 +Load: dtoverlay=uart1,= +Params: txd1_pin GPIO pin for TXD1 (14, 32 or 40 - default 14) + + rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15) + + +Name: vga666 +Info: Overlay for the Fen Logic VGA666 board + This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds + after the kernel has started. +Load: dtoverlay=vga666 +Params: + + +Name: w1-gpio +Info: Configures the w1-gpio Onewire interface module. + Use this overlay if you *don't* need a GPIO to drive an external pullup. +Load: dtoverlay=w1-gpio,= +Params: gpiopin GPIO for I/O (default "4") + + pullup Non-zero, "on", or "y" to enable the parasitic + power (2-wire, power-on-data) feature + + +Name: w1-gpio-pullup +Info: Configures the w1-gpio Onewire interface module. + Use this overlay if you *do* need a GPIO to drive an external pullup. +Load: dtoverlay=w1-gpio-pullup,= +Params: gpiopin GPIO for I/O (default "4") + + pullup Non-zero, "on", or "y" to enable the parasitic + power (2-wire, power-on-data) feature + + extpullup GPIO for external pullup (default "5") + + +Troubleshooting +=============== + +If you are experiencing problems that you think are DT-related, enable DT +diagnostic output by adding this to /boot/config.txt: + + dtdebug=on + +and rebooting. Then run: + + sudo vcdbg log msg + +and look for relevant messages. + +Further reading +=============== + +This is only meant to be a quick introduction to the subject of Device Tree on +Raspberry Pi. There is a more complete explanation here: + +http://www.raspberrypi.org/documentation/configuration/device-tree.md --- /dev/null +++ b/arch/arm/boot/dts/overlays/ads7846-overlay.dts @@ -0,0 +1,83 @@ +/* + * Generic Device Tree overlay for the ADS7846 touch controller + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + ads7846_pins: ads7846_pins { + brcm,pins = <255>; /* illegal default value */ + brcm,function = <0>; /* in */ + brcm,pull = <0>; /* none */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + ads7846: ads7846@1 { + compatible = "ti,ads7846"; + reg = <1>; + pinctrl-names = "default"; + pinctrl-0 = <&ads7846_pins>; + + spi-max-frequency = <2000000>; + interrupts = <255 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 255 0>; + + /* driver defaults */ + ti,x-min = /bits/ 16 <0>; + ti,y-min = /bits/ 16 <0>; + ti,x-max = /bits/ 16 <0x0FFF>; + ti,y-max = /bits/ 16 <0x0FFF>; + ti,pressure-min = /bits/ 16 <0>; + ti,pressure-max = /bits/ 16 <0xFFFF>; + ti,x-plate-ohms = /bits/ 16 <400>; + }; + }; + }; + __overrides__ { + cs = <&ads7846>,"reg:0"; + speed = <&ads7846>,"spi-max-frequency:0"; + penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */ + <&ads7846>,"interrupts:0", + <&ads7846>,"pendown-gpio:4"; + penirq_pull = <&ads7846_pins>,"brcm,pull:0"; + swapxy = <&ads7846>,"ti,swap-xy?"; + xmin = <&ads7846>,"ti,x-min;0"; + ymin = <&ads7846>,"ti,y-min;0"; + xmax = <&ads7846>,"ti,x-max;0"; + ymax = <&ads7846>,"ti,y-max;0"; + pmin = <&ads7846>,"ti,pressure-min;0"; + pmax = <&ads7846>,"ti,pressure-max;0"; + xohms = <&ads7846>,"ti,x-plate-ohms;0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts @@ -0,0 +1,23 @@ +// Definitions for BMP085/BMP180 digital barometric pressure and temperature sensors from Bosch Sensortec +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&i2c_arm>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + bmp085@77 { + compatible = "bosch,bmp085"; + reg = <0x77>; + default-oversampling = <3>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/dht11-overlay.dts @@ -0,0 +1,39 @@ +/* + * Overlay for the DHT11/21/22 humidity/temperature sensor modules. + */ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + + dht11: dht11@0 { + compatible = "dht11"; + pinctrl-names = "default"; + pinctrl-0 = <&dht11_pins>; + gpios = <&gpio 4 0>; + status = "okay"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + dht11_pins: dht11_pins { + brcm,pins = <4>; + brcm,function = <0>; // in + brcm,pull = <0>; // off + }; + }; + }; + + __overrides__ { + gpiopin = <&dht11_pins>,"brcm,pins:0", + <&dht11>,"gpios:4"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/enc28j60-overlay.dts @@ -0,0 +1,50 @@ +// Overlay for the Microchip ENC28J60 Ethernet Controller +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + eth1: enc28j60@0{ + compatible = "microchip,enc28j60"; + reg = <0>; /* CE0 */ + pinctrl-names = "default"; + pinctrl-0 = <ð1_pins>; + interrupt-parent = <&gpio>; + interrupts = <25 0x2>; /* falling edge */ + spi-max-frequency = <12000000>; + status = "okay"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + eth1_pins: eth1_pins { + brcm,pins = <25>; + brcm,function = <0>; /* in */ + brcm,pull = <0>; /* none */ + }; + }; + }; + + __overrides__ { + int_pin = <ð1>, "interrupts:0", + <ð1_pins>, "brcm,pins:0"; + speed = <ð1>, "spi-max-frequency:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts @@ -0,0 +1,34 @@ +// Definitions for gpio-poweroff module +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + power_ctrl: power_ctrl { + compatible = "gpio-poweroff"; + gpios = <&gpio 26 0>; + force; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + power_ctrl_pins: power_ctrl_pins { + brcm,pins = <26>; + brcm,function = <1>; // out + }; + }; + }; + + __overrides__ { + gpiopin = <&power_ctrl>,"gpios:4", + <&power_ctrl_pins>,"brcm,pins:0"; + active_low = <&power_ctrl>,"gpios:8"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for HiFiBerry Amp/Amp+ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "hifiberry,hifiberry-amp"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + tas5713@1b { + #sound-dai-cells = <0>; + compatible = "ti,tas5713"; + reg = <0x1b>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts @@ -0,0 +1,34 @@ +// Definitions for HiFiBerry DAC +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "hifiberry,hifiberry-dac"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target-path = "/"; + __overlay__ { + pcm5102a-codec { + #sound-dai-cells = <0>; + compatible = "ti,pcm5102a"; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for HiFiBerry DAC+ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "hifiberry,hifiberry-dacplus"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pcm5122@4d { + #sound-dai-cells = <0>; + compatible = "ti,pcm5122"; + reg = <0x4d>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for HiFiBerry Digi +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "hifiberry,hifiberry-digi"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + wm8804@3b { + #sound-dai-cells = <0>; + compatible = "wlf,wm8804"; + reg = <0x3b>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hy28a-overlay.dts @@ -0,0 +1,87 @@ +/* + * Device Tree overlay for HY28A display + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + hy28a_pins: hy28a_pins { + brcm,pins = <17 25 18>; + brcm,function = <0 1 1>; /* in out out */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + hy28a: hy28a@0{ + compatible = "ilitek,ili9320"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&hy28a_pins>; + + spi-max-frequency = <32000000>; + spi-cpol; + spi-cpha; + rotate = <270>; + bgr; + fps = <50>; + buswidth = <8>; + startbyte = <0x70>; + reset-gpios = <&gpio 25 0>; + led-gpios = <&gpio 18 1>; + debug = <0>; + }; + + hy28a_ts: hy28a-ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + + spi-max-frequency = <2000000>; + interrupts = <17 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 17 0>; + ti,x-plate-ohms = /bits/ 16 <100>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + __overrides__ { + speed = <&hy28a>,"spi-max-frequency:0"; + rotate = <&hy28a>,"rotate:0"; + fps = <&hy28a>,"fps:0"; + debug = <&hy28a>,"debug:0"; + xohms = <&hy28a_ts>,"ti,x-plate-ohms;0"; + resetgpio = <&hy28a>,"reset-gpios:4", + <&hy28a_pins>, "brcm,pins:1"; + ledgpio = <&hy28a>,"led-gpios:4", + <&hy28a_pins>, "brcm,pins:2"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/hy28b-overlay.dts @@ -0,0 +1,142 @@ +/* + * Device Tree overlay for HY28b display shield by Texy + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + hy28b_pins: hy28b_pins { + brcm,pins = <17 25 18>; + brcm,function = <0 1 1>; /* in out out */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + hy28b: hy28b@0{ + compatible = "ilitek,ili9325"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&hy28b_pins>; + + spi-max-frequency = <48000000>; + spi-cpol; + spi-cpha; + rotate = <270>; + bgr; + fps = <50>; + buswidth = <8>; + startbyte = <0x70>; + reset-gpios = <&gpio 25 0>; + led-gpios = <&gpio 18 1>; + + gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7"; + + init = <0x10000e7 0x0010 + 0x1000000 0x0001 + 0x1000001 0x0100 + 0x1000002 0x0700 + 0x1000003 0x1030 + 0x1000004 0x0000 + 0x1000008 0x0207 + 0x1000009 0x0000 + 0x100000a 0x0000 + 0x100000c 0x0001 + 0x100000d 0x0000 + 0x100000f 0x0000 + 0x1000010 0x0000 + 0x1000011 0x0007 + 0x1000012 0x0000 + 0x1000013 0x0000 + 0x2000032 + 0x1000010 0x1590 + 0x1000011 0x0227 + 0x2000032 + 0x1000012 0x009c + 0x2000032 + 0x1000013 0x1900 + 0x1000029 0x0023 + 0x100002b 0x000e + 0x2000032 + 0x1000020 0x0000 + 0x1000021 0x0000 + 0x2000032 + 0x1000050 0x0000 + 0x1000051 0x00ef + 0x1000052 0x0000 + 0x1000053 0x013f + 0x1000060 0xa700 + 0x1000061 0x0001 + 0x100006a 0x0000 + 0x1000080 0x0000 + 0x1000081 0x0000 + 0x1000082 0x0000 + 0x1000083 0x0000 + 0x1000084 0x0000 + 0x1000085 0x0000 + 0x1000090 0x0010 + 0x1000092 0x0000 + 0x1000093 0x0003 + 0x1000095 0x0110 + 0x1000097 0x0000 + 0x1000098 0x0000 + 0x1000007 0x0133 + 0x1000020 0x0000 + 0x1000021 0x0000 + 0x2000064>; + debug = <0>; + }; + + hy28b_ts: hy28b-ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + + spi-max-frequency = <2000000>; + interrupts = <17 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 17 0>; + ti,x-plate-ohms = /bits/ 16 <100>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + __overrides__ { + speed = <&hy28b>,"spi-max-frequency:0"; + rotate = <&hy28b>,"rotate:0"; + fps = <&hy28b>,"fps:0"; + debug = <&hy28b>,"debug:0"; + xohms = <&hy28b_ts>,"ti,x-plate-ohms;0"; + resetgpio = <&hy28b>,"reset-gpios:4", + <&hy28b_pins>, "brcm,pins:1"; + ledgpio = <&hy28b>,"led-gpios:4", + <&hy28b_pins>, "brcm,pins:2"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts @@ -0,0 +1,55 @@ +// Definitions for several I2C based Real Time Clocks +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&i2c_arm>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + ds1307: ds1307@68 { + compatible = "maxim,ds1307"; + reg = <0x68>; + status = "disable"; + }; + mcp7941x: mcp7941x@6f { + compatible = "microchip,mcp7941x"; + reg = <0x6f>; + status = "disable"; + }; + ds3231: ds3231@68 { + compatible = "maxim,ds3231"; + reg = <0x68>; + status = "disable"; + }; + pcf2127: pcf2127@51 { + compatible = "nxp,pcf2127"; + reg = <0x51>; + status = "disable"; + }; + pcf8523: pcf8523@68 { + compatible = "nxp,pcf8523"; + reg = <0x68>; + status = "disable"; + }; + pcf8563: pcf8563@51 { + compatible = "nxp,pcf8563"; + reg = <0x51>; + status = "disable"; + }; + }; + }; + __overrides__ { + ds1307 = <&ds1307>,"status"; + ds3231 = <&ds3231>,"status"; + mcp7941x = <&mcp7941x>,"status"; + pcf2127 = <&pcf2127>,"status"; + pcf8523 = <&pcf8523>,"status"; + pcf8563 = <&pcf8563>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts @@ -0,0 +1,13 @@ +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&i2s>; + __overlay__ { + brcm,enable-mmap; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for IQaudIO DAC +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "iqaudio,iqaudio-dac"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pcm5122@4c { + #sound-dai-cells = <0>; + compatible = "ti,pcm5122"; + reg = <0x4c>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for IQaudIO DAC+ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "iqaudio,iqaudio-dac"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pcm5122@4c { + #sound-dai-cells = <0>; + compatible = "ti,pcm5122"; + reg = <0x4c>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts @@ -0,0 +1,57 @@ +// Definitions for lirc-rpi module +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + lirc_rpi: lirc_rpi { + compatible = "rpi,lirc-rpi"; + pinctrl-names = "default"; + pinctrl-0 = <&lirc_pins>; + status = "okay"; + + // Override autodetection of IR receiver circuit + // (0 = active high, 1 = active low, -1 = no override ) + rpi,sense = <0xffffffff>; + + // Software carrier + // (0 = off, 1 = on) + rpi,softcarrier = <1>; + + // Invert output + // (0 = off, 1 = on) + rpi,invert = <0>; + + // Enable debugging messages + // (0 = off, 1 = on) + rpi,debug = <0>; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + lirc_pins: lirc_pins { + brcm,pins = <17 18>; + brcm,function = <1 0>; // out in + brcm,pull = <0 1>; // off down + }; + }; + }; + + __overrides__ { + gpio_out_pin = <&lirc_pins>,"brcm,pins:0"; + gpio_in_pin = <&lirc_pins>,"brcm,pins:4"; + gpio_in_pull = <&lirc_pins>,"brcm,pull:4"; + + sense = <&lirc_rpi>,"rpi,sense:0"; + softcarrier = <&lirc_rpi>,"rpi,softcarrier:0"; + invert = <&lirc_rpi>,"rpi,invert:0"; + debug = <&lirc_rpi>,"rpi,debug:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts @@ -0,0 +1,69 @@ +/* + * Device tree overlay for mcp251x/can0 on spi0.0 + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709"; + /* disable spi-dev for spi0.0 */ + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + spidev@0{ + status = "disabled"; + }; + }; + }; + + /* the interrupt pin of the can-controller */ + fragment@1 { + target = <&gpio>; + __overlay__ { + can0_pins: can0_pins { + brcm,pins = <25>; + brcm,function = <0>; /* input */ + }; + }; + }; + + /* the clock/oscillator of the can-controller */ + fragment@2 { + target-path = "/clocks"; + __overlay__ { + /* external oscillator of mcp2515 on SPI0.0 */ + can0_osc: can0_osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <16000000>; + }; + }; + }; + + /* the spi config of the can-controller itself binding everything together */ + fragment@3 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + can0: mcp2515@0 { + reg = <0>; + compatible = "microchip,mcp2515"; + pinctrl-names = "default"; + pinctrl-0 = <&can0_pins>; + spi-max-frequency = <10000000>; + interrupt-parent = <&gpio>; + interrupts = <25 0x2>; + clocks = <&can0_osc>; + }; + }; + }; + __overrides__ { + oscillator = <&can0_osc>,"clock-frequency:0"; + spimaxfrequency = <&can0>,"spi-max-frequency:0"; + interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts @@ -0,0 +1,69 @@ +/* + * Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709"; + /* disable spi-dev for spi0.1 */ + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + spidev@1{ + status = "disabled"; + }; + }; + }; + + /* the interrupt pin of the can-controller */ + fragment@1 { + target = <&gpio>; + __overlay__ { + can1_pins: can1_pins { + brcm,pins = <25>; + brcm,function = <0>; /* input */ + }; + }; + }; + + /* the clock/oscillator of the can-controller */ + fragment@2 { + target-path = "/clocks"; + __overlay__ { + /* external oscillator of mcp2515 on spi0.1 */ + can1_osc: can1_osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <16000000>; + }; + }; + }; + + /* the spi config of the can-controller itself binding everything together */ + fragment@3 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + can1: mcp2515@1 { + reg = <1>; + compatible = "microchip,mcp2515"; + pinctrl-names = "default"; + pinctrl-0 = <&can1_pins>; + spi-max-frequency = <10000000>; + interrupt-parent = <&gpio>; + interrupts = <25 0x2>; + clocks = <&can1_osc>; + }; + }; + }; + __overrides__ { + oscillator = <&can1_osc>,"clock-frequency:0"; + spimaxfrequency = <&can1>,"spi-max-frequency:0"; + interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/mmc-overlay.dts @@ -0,0 +1,39 @@ +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&mmc>; + frag0: __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&mmc_pins>; + bus-width = <4>; + brcm,overclock-50 = <0>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + mmc_pins: mmc_pins { + brcm,pins = <48 49 50 51 52 53>; + brcm,function = <7>; /* alt3 */ + }; + }; + }; + + fragment@2 { + target = <&sdhost>; + __overlay__ { + status = "disabled"; + }; + }; + + __overrides__ { + overclock_50 = <&frag0>,"brcm,overclock-50:0"; + force_pio = <&frag0>,"brcm,force-pio?"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/mz61581-overlay.dts @@ -0,0 +1,111 @@ +/* + * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + mz61581_pins: mz61581_pins { + brcm,pins = <4 15 18 25>; + brcm,function = <0 1 1 1>; /* in out out out */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + mz61581: mz61581@0{ + compatible = "samsung,s6d02a1"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&mz61581_pins>; + + spi-max-frequency = <128000000>; + spi-cpol; + spi-cpha; + + width = <320>; + height = <480>; + rotate = <270>; + bgr; + fps = <30>; + buswidth = <8>; + txbuflen = <32768>; + + reset-gpios = <&gpio 15 0>; + dc-gpios = <&gpio 25 0>; + led-gpios = <&gpio 18 0>; + + init = <0x10000b0 00 + 0x1000011 + 0x20000ff + 0x10000b3 0x02 0x00 0x00 0x00 + 0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43 + 0x10000c1 0x08 0x16 0x08 0x08 + 0x10000c4 0x11 0x07 0x03 0x03 + 0x10000c6 0x00 + 0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00 + 0x1000035 0x00 + 0x1000036 0xa0 + 0x100003a 0x55 + 0x1000044 0x00 0x01 + 0x10000d0 0x07 0x07 0x1d 0x03 + 0x10000d1 0x03 0x30 0x10 + 0x10000d2 0x03 0x14 0x04 + 0x1000029 + 0x100002c>; + + /* This is a workaround to make sure the init sequence slows down and doesn't fail */ + debug = <3>; + }; + + mz61581_ts: mz61581_ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + + spi-max-frequency = <2000000>; + interrupts = <4 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 4 0>; + + ti,x-plate-ohms = /bits/ 16 <60>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + __overrides__ { + speed = <&mz61581>, "spi-max-frequency:0"; + rotate = <&mz61581>, "rotate:0"; + fps = <&mz61581>, "fps:0"; + txbuflen = <&mz61581>, "txbuflen:0"; + debug = <&mz61581>, "debug:0"; + xohms = <&mz61581_ts>,"ti,x-plate-ohms;0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts @@ -0,0 +1,96 @@ +/* + * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + piscreen_pins: piscreen_pins { + brcm,pins = <17 25 24 22>; + brcm,function = <0 1 1 1>; /* in out out out */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + piscreen: piscreen@0{ + compatible = "ilitek,ili9486"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&piscreen_pins>; + + spi-max-frequency = <24000000>; + rotate = <270>; + bgr; + fps = <30>; + buswidth = <8>; + regwidth = <16>; + reset-gpios = <&gpio 25 0>; + dc-gpios = <&gpio 24 0>; + led-gpios = <&gpio 22 1>; + debug = <0>; + + init = <0x10000b0 0x00 + 0x1000011 + 0x20000ff + 0x100003a 0x55 + 0x1000036 0x28 + 0x10000c2 0x44 + 0x10000c5 0x00 0x00 0x00 0x00 + 0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00 + 0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00 + 0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00 + 0x1000011 + 0x1000029>; + }; + + piscreen_ts: piscreen-ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + + spi-max-frequency = <2000000>; + interrupts = <17 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 17 0>; + ti,swap-xy; + ti,x-plate-ohms = /bits/ 16 <100>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + __overrides__ { + speed = <&piscreen>,"spi-max-frequency:0"; + rotate = <&piscreen>,"rotate:0"; + fps = <&piscreen>,"fps:0"; + debug = <&piscreen>,"debug:0"; + xohms = <&piscreen_ts>,"ti,x-plate-ohms;0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts @@ -0,0 +1,115 @@ +/* + * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + pitft_pins: pitft_pins { + brcm,pins = <24 25>; + brcm,function = <0 1>; /* in out */ + brcm,pull = <2 0>; /* pullup none */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + pitft: pitft@0{ + compatible = "ilitek,ili9340"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&pitft_pins>; + + spi-max-frequency = <32000000>; + rotate = <90>; + fps = <25>; + bgr; + buswidth = <8>; + dc-gpios = <&gpio 25 0>; + debug = <0>; + }; + + pitft_ts@1 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "st,stmpe610"; + reg = <1>; + + spi-max-frequency = <500000>; + irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */ + interrupts = <24 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + interrupt-controller; + + stmpe_touchscreen { + compatible = "st,stmpe-ts"; + st,sample-time = <4>; + st,mod-12b = <1>; + st,ref-sel = <0>; + st,adc-freq = <2>; + st,ave-ctrl = <3>; + st,touch-det-delay = <4>; + st,settling = <2>; + st,fraction-z = <7>; + st,i-drive = <0>; + }; + + stmpe_gpio: stmpe_gpio { + #gpio-cells = <2>; + compatible = "st,stmpe-gpio"; + /* + * only GPIO2 is wired/available + * and it is wired to the backlight + */ + st,norequest-mask = <0x7b>; + }; + }; + }; + }; + + fragment@3 { + target-path = "/soc"; + __overlay__ { + backlight { + compatible = "gpio-backlight"; + gpios = <&stmpe_gpio 2 0>; + default-on; + }; + }; + }; + + __overrides__ { + speed = <&pitft>,"spi-max-frequency:0"; + rotate = <&pitft>,"rotate:0"; + fps = <&pitft>,"fps:0"; + debug = <&pitft>,"debug:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts @@ -0,0 +1,34 @@ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + fragment@0 { + target-path = "/"; + __overlay__ { + pps: pps { + compatible = "pps-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <&pps_pins>; + gpios = <&gpio 18 0>; + status = "okay"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + pps_pins: pps_pins { + brcm,pins = <18>; + brcm,function = <0>; // in + brcm,pull = <0>; // off + }; + }; + }; + + __overrides__ { + gpiopin = <&pps>,"gpios:4", + <&pps_pins>,"brcm,pins:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts @@ -0,0 +1,46 @@ +/dts-v1/; +/plugin/; + +/* +This is the 2-channel overlay - only use it if you need both channels. + +Legal pin,function combinations for each channel: + PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1) + PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1) + +N.B.: + 1) Pin 18 is the only one available on all platforms, and + it is the one used by the I2S audio interface. + Pins 12 and 13 might be better choices on an A+, B+ or Pi2. + 2) The onboard analogue audio output uses both PWM channels. + 3) So be careful mixing audio and PWM. +*/ + +/ { + fragment@0 { + target = <&gpio>; + __overlay__ { + pwm_pins: pwm_pins { + brcm,pins = <18 19>; + brcm,function = <2 2>; /* Alt5 */ + }; + }; + }; + + fragment@1 { + target = <&pwm>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&pwm_pins>; + status = "okay"; + }; + }; + + __overrides__ { + pin = <&pwm_pins>,"brcm,pins:0"; + pin2 = <&pwm_pins>,"brcm,pins:4"; + func = <&pwm_pins>,"brcm,function:0"; + func2 = <&pwm_pins>,"brcm,function:4"; + clock = <&clk_pwm>,"clock-frequency:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/pwm-overlay.dts @@ -0,0 +1,42 @@ +/dts-v1/; +/plugin/; + +/* +Legal pin,function combinations for each channel: + PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1) + PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1) + +N.B.: + 1) Pin 18 is the only one available on all platforms, and + it is the one used by the I2S audio interface. + Pins 12 and 13 might be better choices on an A+, B+ or Pi2. + 2) The onboard analogue audio output uses both PWM channels. + 3) So be careful mixing audio and PWM. +*/ + +/ { + fragment@0 { + target = <&gpio>; + __overlay__ { + pwm_pins: pwm_pins { + brcm,pins = <18>; + brcm,function = <2>; /* Alt5 */ + }; + }; + }; + + fragment@1 { + target = <&pwm>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&pwm_pins>; + status = "okay"; + }; + }; + + __overrides__ { + pin = <&pwm_pins>,"brcm,pins:0"; + func = <&pwm_pins>,"brcm,function:0"; + clock = <&clk_pwm>,"clock-frequency:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/raspidac3-overlay.dts @@ -0,0 +1,45 @@ +// Definitions for RaspiDACv3 +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "jg,raspidacv3"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + pcm5122@4c { + #sound-dai-cells = <0>; + compatible = "ti,pcm5122"; + reg = <0x4c>; + status = "okay"; + }; + + tpa6130a2: tpa6130a2@60 { + compatible = "ti,tpa6130a2"; + reg = <0x60>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts @@ -0,0 +1,34 @@ +// Definitions for RPi DAC +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "rpi,rpi-dac"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target-path = "/"; + __overlay__ { + pcm1794a-codec { + #sound-dai-cells = <0>; + compatible = "ti,pcm1794a"; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts @@ -0,0 +1,82 @@ +/* + * Device Tree overlay for rpi-display by Watterott + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + rpi_display_pins: rpi_display_pins { + brcm,pins = <18 23 24 25>; + brcm,function = <1 1 1 0>; /* out out out in */ + brcm,pull = <0 0 0 2>; /* - - - up */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + rpidisplay: rpi-display@0{ + compatible = "ilitek,ili9341"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&rpi_display_pins>; + + spi-max-frequency = <32000000>; + rotate = <270>; + bgr; + fps = <30>; + buswidth = <8>; + reset-gpios = <&gpio 23 0>; + dc-gpios = <&gpio 24 0>; + led-gpios = <&gpio 18 1>; + debug = <0>; + }; + + rpidisplay_ts: rpi-display-ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + + spi-max-frequency = <2000000>; + interrupts = <25 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 25 0>; + ti,x-plate-ohms = /bits/ 16 <60>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + __overrides__ { + speed = <&rpidisplay>,"spi-max-frequency:0"; + rotate = <&rpidisplay>,"rotate:0"; + fps = <&rpidisplay>,"fps:0"; + debug = <&rpidisplay>,"debug:0"; + xohms = <&rpidisplay_ts>,"ti,x-plate-ohms;0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts @@ -0,0 +1,17 @@ +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + rpi_ft5406: rpi_ft5406 { + compatible = "rpi,rpi-ft5406"; + firmware = <&firmware>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for Rpi-Proto +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&sound>; + __overlay__ { + compatible = "rpi,rpi-proto"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@2 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + wm8731@1a { + #sound-dai-cells = <0>; + compatible = "wlf,wm8731"; + reg = <0x1a>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/rpi-sense-overlay.dts @@ -0,0 +1,47 @@ +// rpi-sense HAT +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + rpi-sense@46 { + compatible = "rpi,rpi-sense"; + reg = <0x46>; + keys-int-gpios = <&gpio 23 1>; + status = "okay"; + }; + + lsm9ds1-magn@1c { + compatible = "st,lsm9ds1-magn"; + reg = <0x1c>; + status = "okay"; + }; + + lsm9ds1-accel6a { + compatible = "st,lsm9ds1-accel"; + reg = <0x6a>; + status = "okay"; + }; + + lps25h-press@5c { + compatible = "st,lps25h-press"; + reg = <0x5c>; + status = "okay"; + }; + + hts221-humid@5f { + compatible = "st,hts221-humid"; + reg = <0x5f>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/sdhost-overlay.dts @@ -0,0 +1,29 @@ +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&mmc>; + __overlay__ { + status = "disabled"; + }; + }; + + fragment@1 { + target = <&sdhost>; + frag1: __overlay__ { + brcm,overclock-50 = <0>; + brcm,pio-limit = <1>; + status = "okay"; + }; + }; + + __overrides__ { + overclock_50 = <&frag1>,"brcm,overclock-50:0"; + force_pio = <&frag1>,"brcm,force-pio?"; + pio_limit = <&frag1>,"brcm,pio-limit:0"; + debug = <&frag1>,"brcm,debug?"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts @@ -0,0 +1,32 @@ +/* Enable SDIO from MMC interface via GPIOs 22-27. Includes sdhost overlay. */ + +/include/ "sdhost-overlay.dts" + +/{ + compatible = "brcm,bcm2708"; + + fragment@3 { + target = <&mmc>; + sdio_mmc: __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&sdio_pins>; + non-removable; + status = "okay"; + }; + }; + + fragment@4 { + target = <&gpio>; + __overlay__ { + sdio_pins: sdio_pins { + brcm,pins = <22 23 24 25 26 27>; + brcm,function = <7 7 7 7 7 7>; /* ALT3 = SD1 */ + brcm,pull = <0 2 2 2 2 2>; + }; + }; + }; + + __overrides__ { + poll_once = <&sdio_mmc>,"non-removable?"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/smi-dev-overlay.dts @@ -0,0 +1,18 @@ +// Description: Overlay to enable character device interface for SMI. +// Author: Luke Wren + +/dts-v1/; +/plugin/; + +/{ + fragment@0 { + target = <&soc>; + __overlay__ { + smi_dev { + compatible = "brcm,bcm2835-smi-dev"; + smi_handle = <&smi>; + status = "okay"; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/smi-nand-overlay.dts @@ -0,0 +1,69 @@ +// Description: Overlay to enable NAND flash through +// the secondary memory interface +// Author: Luke Wren + +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&smi>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&smi_pins>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&soc>; + __overlay__ { + #address-cells = <1>; + #size-cells = <1>; + + nand: flash@0 { + compatible = "brcm,bcm2835-smi-nand"; + smi_handle = <&smi>; + #address-cells = <1>; + #size-cells = <1>; + status = "okay"; + + partition@0 { + label = "stage2"; + // 128k + reg = <0 0x20000>; + read-only; + }; + partition@1 { + label = "firmware"; + // 16M + reg = <0x20000 0x1000000>; + read-only; + }; + partition@2 { + label = "root"; + // 2G (will need to use 64 bit for >=4G) + reg = <0x1020000 0x80000000>; + }; + }; + }; + }; + + fragment@2 { + target = <&gpio>; + __overlay__ { + smi_pins: smi_pins { + brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11 + 12 13 14 15>; + /* Alt 1: SMI */ + brcm,function = <5 5 5 5 5 5 5 5 5 5 5 + 5 5 5 5 5>; + /* /CS, /WE and /OE are pulled high, as they are + generally active low signals */ + brcm,pull = <2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0>; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/smi-overlay.dts @@ -0,0 +1,37 @@ +// Description: Overlay to enable the secondary memory interface peripheral +// Author: Luke Wren + +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&smi>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&smi_pins>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + smi_pins: smi_pins { + /* Don't configure the top two address bits, as + these are already used as ID_SD and ID_SC */ + brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 13 14 15 + 16 17 18 19 20 21 22 23 24 25>; + /* Alt 0: SMI */ + brcm,function = <5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 + 5 5 5 5 5 5 5 5 5>; + /* /CS, /WE and /OE are pulled high, as they are + generally active low signals */ + brcm,pull = <2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0 + 0 0 0 0 0 0 0>; + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts @@ -0,0 +1,31 @@ +/* + * Device tree overlay to move spi0 to gpio 35 to 39 on CM + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + cs-gpios = <&gpio 36 1>, <&gpio 35 1>; + }; + }; + + fragment@1 { + target = <&spi0_cs_pins>; + __overlay__ { + bcrm,pins = <36 35>; + }; + }; + + fragment@2 { + target = <&spi0_pins>; + __overlay__ { + bcrm,pins = <37 38 39>; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts @@ -0,0 +1,216 @@ +/* + * tinylcd35-overlay.dts + * + * ------------------------------------------------- + * www.tinlylcd.com + * ------------------------------------------------- + * Device---Driver-----BUS GPIO's + * display tinylcd35 spi0.0 25 24 18 + * touch ads7846 spi0.1 5 + * rtc ds1307 i2c1-0068 + * rtc pcf8563 i2c1-0051 + * keypad gpio-keys --------- 17 22 27 23 28 + * + * + * TinyLCD.com 3.5 inch TFT + * + * Version 001 + * 5/3/2015 -- Noralf Trønnes Initial Device tree framework + * 10/3/2015 -- tinylcd@gmail.com added ds1307 support. + * + */ + +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; + + fragment@0 { + target = <&spi0>; + __overlay__ { + status = "okay"; + + spidev@0{ + status = "disabled"; + }; + + spidev@1{ + status = "disabled"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + tinylcd35_pins: tinylcd35_pins { + brcm,pins = <25 24 18>; + brcm,function = <1>; /* out */ + }; + tinylcd35_ts_pins: tinylcd35_ts_pins { + brcm,pins = <5>; + brcm,function = <0>; /* in */ + }; + keypad_pins: keypad_pins { + brcm,pins = <4 17 22 23 27>; + brcm,function = <0>; /* in */ + brcm,pull = <1>; /* down */ + }; + }; + }; + + fragment@2 { + target = <&spi0>; + __overlay__ { + /* needed to avoid dtc warning */ + #address-cells = <1>; + #size-cells = <0>; + + tinylcd35: tinylcd35@0{ + compatible = "neosec,tinylcd"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&tinylcd35_pins>, + <&tinylcd35_ts_pins>; + + spi-max-frequency = <48000000>; + rotate = <270>; + fps = <20>; + bgr; + buswidth = <8>; + reset-gpios = <&gpio 25 0>; + dc-gpios = <&gpio 24 0>; + led-gpios = <&gpio 18 1>; + debug = <0>; + + init = <0x10000B0 0x80 + 0x10000C0 0x0A 0x0A + 0x10000C1 0x01 0x01 + 0x10000C2 0x33 + 0x10000C5 0x00 0x42 0x80 + 0x10000B1 0xD0 0x11 + 0x10000B4 0x02 + 0x10000B6 0x00 0x22 0x3B + 0x10000B7 0x07 + 0x1000036 0x58 + 0x10000F0 0x36 0xA5 0xD3 + 0x10000E5 0x80 + 0x10000E5 0x01 + 0x10000B3 0x00 + 0x10000E5 0x00 + 0x10000F0 0x36 0xA5 0x53 + 0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00 + 0x100003A 0x55 + 0x1000011 + 0x2000001 + 0x1000029>; + }; + + tinylcd35_ts: tinylcd35_ts@1 { + compatible = "ti,ads7846"; + reg = <1>; + status = "disabled"; + + spi-max-frequency = <2000000>; + interrupts = <5 2>; /* high-to-low edge triggered */ + interrupt-parent = <&gpio>; + pendown-gpio = <&gpio 5 0>; + ti,x-plate-ohms = /bits/ 16 <100>; + ti,pressure-max = /bits/ 16 <255>; + }; + }; + }; + + /* RTC */ + + fragment@3 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + + pcf8563: pcf8563@51 { + compatible = "nxp,pcf8563"; + reg = <0x51>; + status = "disabled"; + }; + }; + }; + + fragment@4 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + + ds1307: ds1307@68 { + compatible = "maxim,ds1307"; + reg = <0x68>; + status = "disabled"; + }; + }; + }; + + /* + * Values for input event code is found under the + * 'Keys and buttons' heading in include/uapi/linux/input.h + */ + fragment@5 { + target-path = "/soc"; + __overlay__ { + keypad: keypad { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&keypad_pins>; + status = "disabled"; + autorepeat; + + button@17 { + label = "GPIO KEY_UP"; + linux,code = <103>; + gpios = <&gpio 17 0>; + }; + button@22 { + label = "GPIO KEY_DOWN"; + linux,code = <108>; + gpios = <&gpio 22 0>; + }; + button@27 { + label = "GPIO KEY_LEFT"; + linux,code = <105>; + gpios = <&gpio 27 0>; + }; + button@23 { + label = "GPIO KEY_RIGHT"; + linux,code = <106>; + gpios = <&gpio 23 0>; + }; + button@4 { + label = "GPIO KEY_ENTER"; + linux,code = <28>; + gpios = <&gpio 4 0>; + }; + }; + }; + }; + + __overrides__ { + speed = <&tinylcd35>,"spi-max-frequency:0"; + rotate = <&tinylcd35>,"rotate:0"; + fps = <&tinylcd35>,"fps:0"; + debug = <&tinylcd35>,"debug:0"; + touch = <&tinylcd35_ts>,"status"; + touchgpio = <&tinylcd35_ts_pins>,"brcm,pins:0", + <&tinylcd35_ts>,"interrupts:0", + <&tinylcd35_ts>,"pendown-gpio:4"; + xohms = <&tinylcd35_ts>,"ti,x-plate-ohms;0"; + rtc-pcf = <&i2c1>,"status", + <&pcf8563>,"status"; + rtc-ds = <&i2c1>,"status", + <&ds1307>,"status"; + keypad = <&keypad>,"status"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/uart1-overlay.dts @@ -0,0 +1,38 @@ +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&uart1>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins>; + status = "okay"; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + uart1_pins: uart1_pins { + brcm,pins = <14 15>; + brcm,function = <2>; /* alt5 */ + brcm,pull = <0 2>; + }; + }; + }; + + fragment@2 { + target-path = "/chosen"; + __overlay__ { + bootargs = "8250.nr_uarts=1"; + }; + }; + + __overrides__ { + txd1_pin = <&uart1_pins>,"brcm,pins:0"; + rxd1_pin = <&uart1_pins>,"brcm,pins:4"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/vga666-overlay.dts @@ -0,0 +1,30 @@ +/dts-v1/; +/plugin/; + +/{ + compatible = "brcm,bcm2708"; + + // There is no VGA driver module, but we need a platform device + // node (that doesn't already use pinctrl) to hang the pinctrl + // reference on - leds will do + + fragment@0 { + target = <&leds>; + __overlay__ { + pinctrl-names = "default"; + pinctrl-0 = <&vga666_pins>; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + vga666_pins: vga666_pins { + brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 + 13 14 15 16 17 18 19 20 21>; + brcm,function = <6>; /* alt2 */ + brcm,pull = <0>; /* no pull */ + }; + }; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts @@ -0,0 +1,39 @@ +// Definitions for w1-gpio module (without external pullup) +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + + w1: onewire@0 { + compatible = "w1-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <&w1_pins>; + gpios = <&gpio 4 0>; + rpi,parasitic-power = <0>; + status = "okay"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + w1_pins: w1_pins { + brcm,pins = <4>; + brcm,function = <0>; // in (initially) + brcm,pull = <0>; // off + }; + }; + }; + + __overrides__ { + gpiopin = <&w1>,"gpios:4", + <&w1_pins>,"brcm,pins:0"; + pullup = <&w1>,"rpi,parasitic-power:0"; + }; +}; --- /dev/null +++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts @@ -0,0 +1,41 @@ +// Definitions for w1-gpio module (with external pullup) +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target-path = "/"; + __overlay__ { + + w1: onewire@0 { + compatible = "w1-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <&w1_pins>; + gpios = <&gpio 4 0>, <&gpio 5 1>; + rpi,parasitic-power = <0>; + status = "okay"; + }; + }; + }; + + fragment@1 { + target = <&gpio>; + __overlay__ { + w1_pins: w1_pins { + brcm,pins = <4 5>; + brcm,function = <0 1>; // in out + brcm,pull = <0 0>; // off off + }; + }; + }; + + __overrides__ { + gpiopin = <&w1>,"gpios:4", + <&w1_pins>,"brcm,pins:0"; + extpullup = <&w1>,"gpios:16", + <&w1_pins>,"brcm,pins:4"; + pullup = <&w1>,"rpi,parasitic-power:0"; + }; +};