diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0585-arm-dts-First-draft-of-upstream-Pi4-DTS.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0585-arm-dts-First-draft-of-upstream-Pi4-DTS.patch | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0585-arm-dts-First-draft-of-upstream-Pi4-DTS.patch b/target/linux/brcm2708/patches-4.19/950-0585-arm-dts-First-draft-of-upstream-Pi4-DTS.patch new file mode 100644 index 0000000000..0fa4cf338d --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0585-arm-dts-First-draft-of-upstream-Pi4-DTS.patch @@ -0,0 +1,176 @@ +From 5216bb8a1257a8216362affe4757a96a36b60b32 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 11 Jun 2019 18:08:05 +0100 +Subject: [PATCH] arm: dts: First draft of upstream Pi4 DTS + +I've attempted to follow the upstream conventions in the DT commits, +but this is just presented here initially as a talking point. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/Makefile | 1 + + arch/arm/boot/dts/bcm2838-rpi-4-b.dts | 118 ++++++++++++++++++++++++++ + arch/arm/boot/dts/bcm2838-rpi.dtsi | 25 ++++++ + 3 files changed, 144 insertions(+) + create mode 100644 arch/arm/boot/dts/bcm2838-rpi-4-b.dts + create mode 100644 arch/arm/boot/dts/bcm2838-rpi.dtsi + +--- a/arch/arm/boot/dts/Makefile ++++ b/arch/arm/boot/dts/Makefile +@@ -94,6 +94,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ + bcm2836-rpi-2-b.dtb \ + bcm2837-rpi-3-b.dtb \ + bcm2837-rpi-3-b-plus.dtb \ ++ bcm2838-rpi-4-b.dtb \ + bcm2835-rpi-zero.dtb \ + bcm2835-rpi-zero-w.dtb + dtb-$(CONFIG_ARCH_BCM_5301X) += \ +--- /dev/null ++++ b/arch/arm/boot/dts/bcm2838-rpi-4-b.dts +@@ -0,0 +1,118 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/dts-v1/; ++#include "bcm2838.dtsi" ++#include "bcm2835-rpi.dtsi" ++#include "bcm2838-rpi.dtsi" ++ ++/ { ++ compatible = "raspberrypi,4-model-b", "brcm,bcm2838"; ++ model = "Raspberry Pi 4 Model B"; ++ ++ chosen { ++ /* 8250 auxiliary UART instead of pl011 */ ++ stdout-path = "serial1:115200n8"; ++ }; ++ ++ memory { ++ reg = <0 0 0x40000000>; ++ }; ++ ++ leds { ++ act { ++ gpios = <&gpio 42 GPIO_ACTIVE_HIGH>; ++ }; ++ ++ pwr { ++ label = "PWR"; ++ gpios = <&expgpio 2 GPIO_ACTIVE_LOW>; ++ }; ++ }; ++ ++ wifi_pwrseq: wifi-pwrseq { ++ compatible = "mmc-pwrseq-simple"; ++ reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>; ++ }; ++ ++ sd_io_1v8_reg: sd_io_1v8_reg { ++ status = "okay"; ++ compatible = "regulator-gpio"; ++ vin-supply = <&vdd_5v0_reg>; ++ regulator-name = "vdd-sd-io"; ++ regulator-min-microvolt = <1800000>; ++ regulator-max-microvolt = <3300000>; ++ regulator-boot-on; ++ regulator-always-on; ++ regulator-settling-time-us = <5000>; ++ ++ gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>; ++ states = <1800000 0x1 ++ 3300000 0x0>; ++ }; ++}; ++ ++&firmware { ++ expgpio: gpio { ++ compatible = "raspberrypi,firmware-gpio"; ++ gpio-controller; ++ #gpio-cells = <2>; ++ gpio-line-names = "BT_ON", ++ "WL_ON", ++ "PWR_LED_OFF", ++ "GLOBAL_RESET", ++ "VDD_SD_IO_SEL", ++ "CAM_GPIO", ++ "", ++ ""; ++ status = "okay"; ++ }; ++}; ++ ++&pwm1 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>; ++ status = "okay"; ++}; ++ ++/* SDHCI is used to control the SDIO for wireless */ ++&sdhci { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&emmc_gpio34>; ++ status = "okay"; ++ bus-width = <4>; ++ non-removable; ++ mmc-pwrseq = <&wifi_pwrseq>; ++ ++ brcmf: wifi@1 { ++ reg = <1>; ++ compatible = "brcm,bcm4329-fmac"; ++ }; ++}; ++ ++/* EMMC2 is used to drive the SD card */ ++&emmc2 { ++ status = "okay"; ++ broken-cd; ++ vqmmc-supply = <&sd_io_1v8_reg>; ++}; ++ ++/* uart0 communicates with the BT module */ ++&uart0 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>; ++ status = "okay"; ++ ++ bluetooth { ++ compatible = "brcm,bcm43438-bt"; ++ max-speed = <2000000>; ++ shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>; ++ }; ++}; ++ ++/* uart1 is mapped to the pin header */ ++&uart1 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&uart1_gpio14>; ++ status = "okay"; ++}; +--- /dev/null ++++ b/arch/arm/boot/dts/bcm2838-rpi.dtsi +@@ -0,0 +1,25 @@ ++// SPDX-License-Identifier: GPL-2.0 ++ ++/ { ++ soc { ++ /delete-node/ mailbox@7e00b840; ++ }; ++}; ++ ++&scb { ++ vchiq: mailbox@7e00b840 { ++ compatible = "brcm,bcm2838-vchiq"; ++ reg = <0 0x7e00b840 0x3c>; ++ interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>; ++ }; ++}; ++ ++&dma { ++ /* The VPU firmware uses DMA channel 11 for VCHIQ */ ++ brcm,dma-channel-mask = <0x1f5>; ++}; ++ ++&dma40 { ++ /* The VPU firmware DMA channel 11 for VCHIQ */ ++ brcm,dma-channel-mask = <0x7000>; ++}; |