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, 68 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0965-overlays-Add-option-for-composite-to-vc4-kms-v3d-pi4.patch b/target/linux/bcm27xx/patches-5.4/950-0965-overlays-Add-option-for-composite-to-vc4-kms-v3d-pi4.patch
new file mode 100644
index 0000000000..0334261bb5
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0965-overlays-Add-option-for-composite-to-vc4-kms-v3d-pi4.patch
@@ -0,0 +1,68 @@
+From bbced22ee3d4c08612bbc35c860d2274e85d5a51 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 27 Aug 2020 18:57:26 +0100
+Subject: [PATCH] overlays: Add option for composite to
+ vc4-kms-v3d-pi4.
+
+Composite is an alternative to HDMI/DPI/DSI on Pi4 as it
+requires very particular clock setups.
+Add an option to vc4-kms-v3d-pi4 to enable composite and
+disable all other graphics outputs.
+
+NB This must be used in conjunction with enable_tvout=1
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  2 ++
+ .../dts/overlays/vc4-kms-v3d-pi4-overlay.dts  | 26 +++++++++++++++++++
+ 2 files changed, 28 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -2924,6 +2924,8 @@ Params: cma-256                 CMA is 2
+         audio1                  Enable or disable audio over HDMI1 (default
+                                 "on")
+         noaudio                 Disable all HDMI audio (default "off")
++        composite               Enable the composite output (disables all other
++                                outputs)
+ 
+ 
+ Name:   vga666
+--- a/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
++++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-pi4-overlay.dts
+@@ -152,9 +152,35 @@
+ 		};
+ 	};
+ 
++	fragment@21 {
++		target = <&pixelvalve3>;
++		__dormant__  {
++			status = "okay";
++		};
++	};
++
++	fragment@22 {
++		target = <&vec>;
++		__dormant__  {
++			status = "okay";
++		};
++	};
++
+ 	__overrides__ {
+ 		audio   = <0>,"!17";
+ 		audio1   = <0>,"!18";
+ 		noaudio = <0>,"=17", <0>,"=18", <0>,"!19";
++		composite = <0>, "!1",
++			    <0>, "!2",
++			    <0>, "!3",
++			    <0>, "!4",
++			    <0>, "!6",
++			    <0>, "!7",
++			    <0>, "!8",
++			    <0>, "!9",
++			    <0>, "!10",
++			    <0>, "!16",
++			    <0>, "=21",
++			    <0>, "=22";
+ 	};
+ };