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>
(cherry-picked from commit f07e572f64)

1 files changed, 157 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0890-dtoverlays-Create-an-overlay-for-the-Omnivision-OV72.patch b/target/linux/bcm27xx/patches-5.4/950-0890-dtoverlays-Create-an-overlay-for-the-Omnivision-OV72.patch
new file mode 100644
index 0000000000..6a4da8f814
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0890-dtoverlays-Create-an-overlay-for-the-Omnivision-OV72.patch
@@ -0,0 +1,157 @@
+From 870de3bc0e80a9b79b470a45636437a0078041c1 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Tue, 7 Jul 2020 16:12:05 +0100
+Subject: [PATCH] dtoverlays: Create an overlay for the Omnivision
+ OV7251 sensor
+
+Adds an overlay for the OV7251 VGA global shutter sensor.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |   8 ++
+ arch/arm/boot/dts/overlays/ov7251-overlay.dts | 111 ++++++++++++++++++
+ 3 files changed, 120 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/ov7251-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -115,6 +115,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	mpu6050.dtbo \
+ 	mz61581.dtbo \
+ 	ov5647.dtbo \
++	ov7251.dtbo \
+ 	ov9281.dtbo \
+ 	papirus.dtbo \
+ 	pibell.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1813,6 +1813,14 @@ Load:   dtoverlay=ov5647
+ Params: <None>
+ 
+ 
++Name:   ov7251
++Info:   Omnivision OV7251 camera module.
++        Uses Unicam 1, which is the standard camera connector on most Pi
++        variants.
++Load:   dtoverlay=ov7251
++Params: <None>
++
++
+ Name:   ov9281
+ Info:   Omnivision OV9281 camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
+@@ -0,0 +1,111 @@
++// SPDX-License-Identifier: GPL-2.0-only
++// Definitions for OV7251 camera module on VC I2C bus
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/gpio/gpio.h>
++
++/{
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c_csi_dsi>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			ov7251: ov7251@60 {
++				compatible = "ovti,ov7251";
++				reg = <0x60>;
++				status = "okay";
++
++				clocks = <&ov7251_clk>;
++				clock-names = "xclk";
++				clock-frequency = <24000000>;
++
++				vdddo-supply = <&ov7251_dovdd>;
++				vdda-supply = <&ov7251_avdd>;
++				vddd-supply = <&ov7251_dvdd>;
++
++				enable-gpios = <&gpio 41 GPIO_ACTIVE_HIGH>;
++
++				port {
++					ov7251_0: endpoint {
++						remote-endpoint = <&csi1_ep>;
++						clock-lanes = <0>;
++						data-lanes = <1>;
++						clock-noncontinuous;
++						link-frequencies =
++							/bits/ 64 <456000000>;
++					};
++				};
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&csi1>;
++		__overlay__ {
++			status = "okay";
++
++			port {
++				csi1_ep: endpoint {
++					remote-endpoint = <&ov7251_0>;
++					data-lanes = <1>;
++				};
++			};
++		};
++	};
++
++	fragment@2 {
++		target = <&i2c0if>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@3 {
++		target-path="/";
++		__overlay__ {
++			ov7251_avdd: fixedregulator@0 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov7251_avdd";
++				regulator-min-microvolt = <2800000>;
++				regulator-max-microvolt = <2800000>;
++			};
++			ov7251_dovdd: fixedregulator@1 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov7251_dovdd";
++				regulator-min-microvolt = <1800000>;
++				regulator-max-microvolt = <1800000>;
++			};
++			ov7251_dvdd: fixedregulator@2 {
++				compatible = "regulator-fixed";
++				regulator-name = "ov7251_dvdd";
++				regulator-min-microvolt = <1200000>;
++				regulator-max-microvolt = <1200000>;
++			};
++			ov7251_clk: ov7251-clk {
++				compatible = "fixed-clock";
++				#clock-cells = <0>;
++				clock-frequency = <24000000>;
++			};
++		};
++	};
++
++	fragment@4 {
++		target = <&i2c0mux>;
++		__overlay__ {
++			status = "okay";
++		};
++	};
++
++	fragment@5 {
++		target-path="/__overrides__";
++		__overlay__ {
++			cam0-pwdn-ctrl = <&ov7251>,"enable-gpios:0";
++			cam0-pwdn      = <&ov7251>,"enable-gpios:4";
++		};
++	};
++};