bcm27xx: add kernel 5.10 support

Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

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

1 files changed, 205 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0521-ARM-dts-update-bcm2711-rpi-cm4.dts-and-400.patch b/target/linux/bcm27xx/patches-5.10/950-0521-ARM-dts-update-bcm2711-rpi-cm4.dts-and-400.patch
new file mode 100644
index 0000000000..f60418856a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0521-ARM-dts-update-bcm2711-rpi-cm4.dts-and-400.patch
@@ -0,0 +1,205 @@
+From a38d7464ca20e1c0aaa3ed77e03e1ea6af4bc557 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Wed, 31 Mar 2021 10:22:30 +0100
+Subject: [PATCH] ARM: dts: update bcm2711-rpi-cm4.dts and -400
+
+Neither CM4 nor Pi 400 have appeared upstream yet, and as a result
+they have missed out on improvements to the Pi 4B platform.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+
+ARM: dts: Bring bcm2711-rpi-400.dts up-to-date
+
+Pi 400 support has not appeared upstream yet, and as a result it has
+missed out on improvements to the other Pi 4 platforms.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2711-rpi-400.dts | 17 +++++++
+ arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 73 +++++++++++++++++++++------
+ 2 files changed, 74 insertions(+), 16 deletions(-)
+
+--- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
+@@ -24,6 +24,7 @@
+ 		emmc2bus = &emmc2bus;
+ 		ethernet0 = &genet;
+ 		pcie0 = &pcie0;
++		blconfig = &blconfig;
+ 	};
+ 
+ 	leds {
+@@ -215,6 +216,22 @@
+ 	status = "okay";
+ };
+ 
++&rmem {
++	/*
++	 * RPi4's co-processor will copy the board's bootloader configuration
++	 * into memory for the OS to consume. It'll also update this node with
++	 * its placement information.
++	 */
++	blconfig: nvram@0 {
++		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
++		#address-cells = <1>;
++		#size-cells = <1>;
++		reg = <0x0 0x0 0x0>;
++		no-map;
++		status = "disabled";
++	};
++};
++
+ /* SDHCI is used to control the SDIO for wireless */
+ &sdhci {
+ 	#address-cells = <1>;
+--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
++++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+@@ -3,6 +3,8 @@
+ #include "bcm2711.dtsi"
+ #include "bcm2835-rpi.dtsi"
+ 
++#include <dt-bindings/reset/raspberrypi,firmware-reset.h>
++
+ / {
+ 	compatible = "raspberrypi,4-compute-module", "brcm,bcm2711";
+ 	model = "Raspberry Pi Compute Module 4";
+@@ -22,6 +24,7 @@
+ 		emmc2bus = &emmc2bus;
+ 		ethernet0 = &genet;
+ 		pcie0 = &pcie0;
++		blconfig = &blconfig;
+ 	};
+ 
+ 	leds {
+@@ -76,6 +79,11 @@
+ };
+ 
+ &firmware {
++	firmware_clocks: clocks {
++		compatible = "raspberrypi,firmware-clocks";
++		#clock-cells = <1>;
++	};
++
+ 	expgpio: gpio {
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+@@ -102,6 +110,11 @@
+ 			output-low;
+ 		};
+ 	};
++
++	reset: reset {
++		compatible = "raspberrypi,firmware-reset";
++		#reset-cells = <1>;
++	};
+ };
+ 
+ &gpio {
+@@ -209,20 +222,28 @@
+ 	status = "okay";
+ };
+ 
+-&vc4 {
+-	status = "okay";
+-};
+-
+-&vec {
+-	status = "disabled";
+-};
+-
+ &pwm1 {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
+ 	status = "okay";
+ };
+ 
++&rmem {
++	/*
++	 * RPi4's co-processor will copy the board's bootloader configuration
++	 * into memory for the OS to consume. It'll also update this node with
++	 * its placement information.
++	 */
++	blconfig: nvram@0 {
++		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
++		#address-cells = <1>;
++		#size-cells = <1>;
++		reg = <0x0 0x0 0x0>;
++		no-map;
++		status = "disabled";
++	};
++};
++
+ /* SDHCI is used to control the SDIO for wireless */
+ &sdhci {
+ 	#address-cells = <1>;
+@@ -262,6 +283,21 @@
+ 	};
+ };
+ 
++&pcie0 {
++	pci@1,0 {
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges;
++
++		reg = <0 0 0 0 0>;
++
++		usb@1,0 {
++			reg = <0x10000 0 0 0 0>;
++			resets = <&reset RASPBERRYPI_FIRMWARE_RESET_ID_USB>;
++		};
++	};
++};
++
+ /* uart0 communicates with the BT module */
+ &uart0 {
+ 	pinctrl-names = "default";
+@@ -287,6 +323,14 @@
+ 	interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ 
++&vc4 {
++	status = "okay";
++};
++
++&vec {
++	status = "disabled";
++};
++
+ // =============================================
+ // Downstream rpi- changes
+ 
+@@ -306,6 +350,7 @@
+ #include "bcm283x-rpi-csi0-2lane.dtsi"
+ #include "bcm283x-rpi-csi1-4lane.dtsi"
+ #include "bcm283x-rpi-i2c0mux_0_44.dtsi"
++#include "bcm283x-rpi-cam1-regulator.dtsi"
+ 
+ / {
+ 	chosen {
+@@ -331,14 +376,6 @@
+ 	};
+ 
+ 	/delete-node/ wifi-pwrseq;
+-
+-	cam0_reg: cam1_reg: cam1_reg {
+-		compatible = "regulator-fixed";
+-		regulator-name = "cam1-reg";
+-		gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
+-		enable-active-high;
+-		status = "disabled";
+-	};
+ };
+ 
+ &mmcnr {
+@@ -589,6 +626,10 @@
+ 	brcm,disable-headphones = <1>;
+ };
+ 
++cam0_reg: &cam1_reg {
++	gpio = <&expgpio 5 GPIO_ACTIVE_HIGH>;
++};
++
+ / {
+ 	__overrides__ {
+ 		act_led_gpio = <&act_led>,"gpios:4";