brcm2708: add linux 4.19 support

Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 176 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0671-arm-dts-First-draft-of-upstream-Pi4-DTS.patch b/target/linux/brcm2708/patches-4.19/950-0671-arm-dts-First-draft-of-upstream-Pi4-DTS.patch
new file mode 100644
index 0000000000..fe71dd1e16
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0671-arm-dts-First-draft-of-upstream-Pi4-DTS.patch
@@ -0,0 +1,176 @@
+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>;
++};