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, 241 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0593-dtoverlays-Add-Pi4-version-of-vc4-kms-v3d.patch b/target/linux/bcm27xx/patches-5.4/950-0593-dtoverlays-Add-Pi4-version-of-vc4-kms-v3d.patch
new file mode 100644
index 0000000000..1c46fa4485
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0593-dtoverlays-Add-Pi4-version-of-vc4-kms-v3d.patch
@@ -0,0 +1,241 @@
+From 7f9f7a113e9c5d6efd997de7de93af31ec286174 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Fri, 20 Sep 2019 17:20:01 +0100
+Subject: [PATCH] dtoverlays: Add Pi4 version of vc4-kms-v3d
+
+The Pi4 version of the KMS drivers is a work in progress, some
+blocks need alternate configuration, and some blocks currently
+need to remain disabled (eg the VEC).
+
+Add a new overlay (vc4-kms-v3d-pi4) that loads the parts of
+vc4-kms that do work on Pi4.
+This has been tested with DPI and HDMI (not 100% reliable on mode
+switching)
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/Makefile           |   1 +
+ arch/arm/boot/dts/overlays/README             |  14 ++
+ .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts  | 183 ++++++++++++++++++
+ 3 files changed, 198 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -191,6 +191,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	vc4-fkms-v3d.dtbo \
+ 	vc4-kms-kippah-7inch.dtbo \
+ 	vc4-kms-v3d.dtbo \
++	vc4-kms-v3d-pi4.dtbo \
+ 	vga666.dtbo \
+ 	w1-gpio.dtbo \
+ 	w1-gpio-pullup.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2684,6 +2684,20 @@ Params: cma-256                 CMA is 2
+         audio                   Enable or disable audio over HDMI (default "on")
+ 
+ 
++Name:   vc4-kms-v3d-pi4
++Info:   Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver for Pi4.
++Load:   dtoverlay=vc4-kms-v3d-pi4,<param>
++Params: cma-256                 CMA is 256MB
++        cma-192                 CMA is 192MB
++        cma-128                 CMA is 128MB
++        cma-96                  CMA is 96MB
++        cma-64                  CMA is 64MB
++        audio                   Enable or disable audio over HDMI0 (default
++                                "on")
++        audio1                  Enable or disable audio over HDMI1 (default
++                                "on")
++
++
+ Name:   vga666
+ Info:   Overlay for the Fen Logic VGA666 board
+         This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+@@ -0,0 +1,183 @@
++/*
++ * vc4-kms-v3d-pi4-overlay.dts
++ */
++
++/dts-v1/;
++/plugin/;
++
++#include <dt-bindings/clock/bcm2835.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target-path = "/chosen";
++		__overlay__ {
++			bootargs = "cma=256M";
++		};
++	};
++
++	fragment@1 {
++		target-path = "/chosen";
++		__dormant__ {
++			bootargs = "cma=192M";
++		};
++	};
++
++	fragment@2 {
++		target-path = "/chosen";
++		__dormant__ {
++			bootargs = "cma=128M";
++		};
++	};
++
++	fragment@3 {
++		target-path = "/chosen";
++		__dormant__ {
++			bootargs = "cma=96M";
++		};
++	};
++
++	fragment@4 {
++		target-path = "/chosen";
++		__dormant__ {
++			bootargs = "cma=64M";
++		};
++	};
++
++	fragment@5 {
++		target = <&ddc0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@6 {
++		target = <&ddc1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@7 {
++		target = <&hdmi0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@8 {
++		target = <&hdmi1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@9 {
++		target = <&hvs>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@10 {
++		target = <&pixelvalve0>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@11 {
++		target = <&pixelvalve1>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@12 {
++		target = <&pixelvalve2>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@13 {
++		target = <&pixelvalve3>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@14 {
++		target = <&pixelvalve4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@15 {
++		target = <&v3d>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@16 {
++		target = <&vc4>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@17 {
++		target = <&txp>;
++		__overlay__  {
++			status = "okay";
++		};
++	};
++
++	fragment@18 {
++		target = <&fb>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@19 {
++		target = <&firmwarekms>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@20 {
++		target = <&vec>;
++		__overlay__  {
++			status = "disabled";
++		};
++	};
++
++	fragment@21 {
++		target = <&hdmi0>;
++		__dormant__  {
++			dmas;
++		};
++	};
++
++	fragment@22 {
++		target = <&hdmi1>;
++		__dormant__  {
++			dmas;
++		};
++	};
++
++	__overrides__ {
++		cma-256 = <0>,"+0-1-2-3-4";
++		cma-192 = <0>,"-0+1-2-3-4";
++		cma-128 = <0>,"-0-1+2-3-4";
++		cma-96  = <0>,"-0-1-2+3-4";
++		cma-64  = <0>,"-0-1-2-3+4";
++		audio   = <0>,"!21";
++		audio1   = <0>,"!22";
++	};
++};