diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0668-ARM-dts-Create-bcm2708-rpi-b-rev1.dts.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0668-ARM-dts-Create-bcm2708-rpi-b-rev1.dts.patch | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0668-ARM-dts-Create-bcm2708-rpi-b-rev1.dts.patch b/target/linux/bcm27xx/patches-5.4/950-0668-ARM-dts-Create-bcm2708-rpi-b-rev1.dts.patch new file mode 100644 index 0000000000..42067a7816 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0668-ARM-dts-Create-bcm2708-rpi-b-rev1.dts.patch @@ -0,0 +1,182 @@ +From bd291f0ff613ad270a7c9352f3f27a09c058553f Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.com> +Date: Tue, 21 Apr 2020 17:34:27 +0100 +Subject: [PATCH] ARM: dts: Create bcm2708-rpi-b-rev1.dts + +The first revision of the Pi Model B used I2C0 to address the camera +and I2C0 was available for user applications on the 26-pin header. +The second revision switched the roles, kept I2C0 on the 26-pin header +and added I2C1 on a new 8-way header (P5). + +Up to now, downstream DTS has used a single file for both revisions of +the board, with a small amount of patching from the firmware. With the +introduction of an I2C mux to share I2C0 between the camera/display +connectors and the IDC headers, the difference between the two versions +becomes too great to comfortably manage with tweaking, hence this split. + +Upstream DTS files already have bcm2835-rpi-b.dts and +bcm2835-rpi-b-rev2.dts, but for backwards compatibility the new file is +being added as bcm2708-rpi-b-rev1.dts, rather than renaming the old +shared version to bcm2708-rpi-b-rev2.dts. + +Signed-off-by: Phil Elwell <phil@raspberrypi.com> +--- + arch/arm/boot/dts/Makefile | 1 + + arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts | 127 +++++++++++++++++++++++ + arch/arm/boot/dts/bcm270x-rpi.dtsi | 4 + + 3 files changed, 132 insertions(+) + create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts + +--- a/arch/arm/boot/dts/Makefile ++++ b/arch/arm/boot/dts/Makefile +@@ -2,6 +2,7 @@ + + dtb-$(CONFIG_ARCH_BCM2835) += \ + bcm2708-rpi-b.dtb \ ++ bcm2708-rpi-b-rev1.dtb \ + bcm2708-rpi-b-plus.dtb \ + bcm2708-rpi-cm.dtb \ + bcm2708-rpi-zero.dtb \ +--- /dev/null ++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts +@@ -0,0 +1,127 @@ ++/dts-v1/; ++ ++#include "bcm2708.dtsi" ++#include "bcm2708-rpi.dtsi" ++#include "bcm283x-rpi-smsc9512.dtsi" ++#include "bcm283x-rpi-csi1-2lane.dtsi" ++ ++/ { ++ compatible = "raspberrypi,model-b", "brcm,bcm2835"; ++ model = "Raspberry Pi Model B"; ++}; ++ ++&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 = <28 29 30 31>; ++ brcm,function = <6>; /* alt2 */ ++ }; ++ ++ audio_pins: audio_pins { ++ brcm,pins = <40 45>; ++ brcm,function = <4>; ++ }; ++}; ++ ++&uart0 { ++ status = "okay"; ++}; ++ ++&spi0 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&spi0_pins &spi0_cs_pins>; ++ cs-gpios = <&gpio 8 1>, <&gpio 7 1>; ++ ++ spidev0: spidev@0{ ++ compatible = "spidev"; ++ reg = <0>; /* CE0 */ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ spi-max-frequency = <125000000>; ++ }; ++ ++ spidev1: spidev@1{ ++ compatible = "spidev"; ++ reg = <1>; /* CE1 */ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ spi-max-frequency = <125000000>; ++ }; ++}; ++ ++/delete-node/ &i2c0mux; ++ ++i2c0: &i2c0if { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&i2c0_pins>; ++ clock-frequency = <100000>; ++}; ++ ++i2c_csi_dsi: &i2c1 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&i2c1_pins>; ++ clock-frequency = <100000>; ++}; ++ ++/ { ++ aliases { ++ i2c0 = &i2c0; ++ }; ++ ++ __overrides__ { ++ i2c0 = <&i2c0>, "status"; ++ }; ++}; ++ ++&i2c2 { ++ clock-frequency = <100000>; ++}; ++ ++&i2s { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&i2s_pins>; ++}; ++ ++&leds { ++ act_led: act { ++ label = "led0"; ++ linux,default-trigger = "mmc0"; ++ gpios = <&gpio 16 1>; ++ }; ++}; ++ ++&hdmi { ++ hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; ++}; ++ ++&audio { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&audio_pins>; ++}; ++ ++/ { ++ __overrides__ { ++ act_led_gpio = <&act_led>,"gpios:4"; ++ act_led_activelow = <&act_led>,"gpios:8"; ++ act_led_trigger = <&act_led>,"linux,default-trigger"; ++ }; ++}; +--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi ++++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi +@@ -110,6 +110,10 @@ + status = "disabled"; + }; + ++&i2c0mux { ++ status = "disabled"; ++}; ++ + &i2c1 { + status = "disabled"; + }; |