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From 575145094f904ca3c50e07f69a4ffaea902eadd7 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 11 Jun 2019 18:08:05 +0100
Subject: [PATCH 671/703] 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>;
+};
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