bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

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

1 files changed, 192 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-1038-overlays-Add-overlay-for-Seeed-Studio-CAN-BUS-FD-HAT.patch b/target/linux/bcm27xx/patches-5.4/950-1038-overlays-Add-overlay-for-Seeed-Studio-CAN-BUS-FD-HAT.patch
new file mode 100644
index 0000000000..6ae1680d88
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-1038-overlays-Add-overlay-for-Seeed-Studio-CAN-BUS-FD-HAT.patch
@@ -0,0 +1,192 @@
+From 42c792400770ec57cafce87cb9594a948d6c0700 Mon Sep 17 00:00:00 2001
+From: Marc Kleine-Budde <mkl@pengutronix.de>
+Date: Sat, 2 Jan 2021 21:38:58 +0100
+Subject: [PATCH] overlays: Add overlay for Seeed Studio CAN BUS FD
+ HAT v1 (based on mcp2517fd)
+
+This patch adds the overlay for the Seeed Studio CAN BUS FD HAT v1 with two CAN
+FD Channels (based on mcp2517fd).
+
+https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
+
+The overlay was generated by:
+ovmerge -c spi1-1cs-overlay.dts,cs0_pin=18,cs0_spidev=false \
+           mcp251xfd-overlay.dts,spi0-0,interrupt=25 \
+           mcp251xfd-overlay.dts,spi1-0,interrupt=24
+
+Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |   8 +
+ .../overlays/seeed-can-fd-hat-v1-overlay.dts  | 138 ++++++++++++++++++
+ 3 files changed, 147 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -159,6 +159,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	sc16is752-spi1.dtbo \
+ 	sdhost.dtbo \
+ 	sdio.dtbo \
++	seeed-can-fd-hat-v1.dtbo \
+ 	seeed-can-fd-hat-v2.dtbo \
+ 	sh1106-spi.dtbo \
+ 	smi.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2460,6 +2460,14 @@ Info:   This overlay is now deprecated.
+ Load:   <Deprecated>
+ 
+ 
++Name:   seeed-can-fd-hat-v1
++Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels
++        (based on the mcp2517fd).
++        https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
++Load:   dtoverlay=seeed-can-fd-hat-v1
++Params: <None>
++
++
+ Name:   seeed-can-fd-hat-v2
+ Info:   Overlay for Seeed Studio CAN BUS FD HAT with two CAN FD channels
+         (based on the mcp2518fd) and an RTC.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/seeed-can-fd-hat-v1-overlay.dts
+@@ -0,0 +1,138 @@
++// redo: ovmerge -c spi1-1cs-overlay.dts,cs0_pin=18,cs0_spidev=false mcp251xfd-overlay.dts,spi0-0,interrupt=25 mcp251xfd-overlay.dts,spi1-0,interrupt=24
++
++// Device tree overlay for https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/pinctrl/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++	fragment@0 {
++		target = <&gpio>;
++		__overlay__ {
++			spi1_pins: spi1_pins {
++				brcm,pins = <19 20 21>;
++				brcm,function = <3>;
++			};
++			spi1_cs_pins: spi1_cs_pins {
++				brcm,pins = <18>;
++				brcm,function = <1>;
++			};
++		};
++	};
++	fragment@1 {
++		target = <&spi1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			pinctrl-names = "default";
++			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
++			cs-gpios = <&gpio 18 1>;
++			status = "okay";
++			spidev@0 {
++				compatible = "spidev";
++				reg = <0>;
++				#address-cells = <1>;
++				#size-cells = <0>;
++				spi-max-frequency = <125000000>;
++				status = "disabled";
++			};
++		};
++	};
++	fragment@2 {
++		target = <&aux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++	fragment@3 {
++		target = <&spidev0>;
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@4 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins: mcp251xfd_spi0_0_pins {
++				brcm,pins = <25>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@5 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc: mcp251xfd-spi0-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@6 {
++		target = <&spi0>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc>;
++			};
++		};
++	};
++	fragment@7 {
++		target-path = "spi1/spidev@0";
++		__overlay__ {
++			status = "disabled";
++		};
++	};
++	fragment@8 {
++		target = <&gpio>;
++		__overlay__ {
++			mcp251xfd_pins_1: mcp251xfd_spi1_0_pins {
++				brcm,pins = <24>;
++				brcm,function = <BCM2835_FSEL_GPIO_IN>;
++			};
++		};
++	};
++	fragment@9 {
++		target-path = "/clocks";
++		__overlay__ {
++			clk_mcp251xfd_osc_1: mcp251xfd-spi1-0-osc {
++				#clock-cells = <0>;
++				compatible = "fixed-clock";
++				clock-frequency = <40000000>;
++			};
++		};
++	};
++	fragment@10 {
++		target = <&spi1>;
++		__overlay__ {
++			status = "okay";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			mcp251xfd@0 {
++				compatible = "microchip,mcp251xfd";
++				reg = <0>;
++				pinctrl-names = "default";
++				pinctrl-0 = <&mcp251xfd_pins_1>;
++				spi-max-frequency = <20000000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
++				clocks = <&clk_mcp251xfd_osc_1>;
++			};
++		};
++	};
++};