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, 44 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-1040-overlays-add-spi-override-to-merus-amp-overlay.patch b/target/linux/bcm27xx/patches-5.4/950-1040-overlays-add-spi-override-to-merus-amp-overlay.patch
new file mode 100644
index 0000000000..213d29367d
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-1040-overlays-add-spi-override-to-merus-amp-overlay.patch
@@ -0,0 +1,44 @@
+From 2b4ffcc3d1a589154928830e56d4b8efdf15e368 Mon Sep 17 00:00:00 2001
+From: Aaron Shaw <shawaj@gmail.com>
+Date: Sat, 26 Dec 2020 03:13:14 +0000
+Subject: [PATCH] overlays: add spi override to merus-amp overlay
+
+adds an override to the merus-amp overlay to turn the spi bus off
+
+Change-type: patch
+Signed-off-by: Aaron Shaw <shawaj@gmail.com>
+---
+ arch/arm/boot/dts/overlays/README                |  4 ++--
+ arch/arm/boot/dts/overlays/merus-amp-overlay.dts | 10 ++++++++++
+ 2 files changed, 12 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1870,8 +1870,8 @@ Params: speed                   Display
+ 
+ Name:   merus-amp
+ Info:   Configures the merus-amp audio card
+-Load:   dtoverlay=merus-amp
+-Params: <None>
++Load:   dtoverlay=merus-amp,<param>=<val>
++Params: spioff                  Turn SPI bus off
+ 
+ 
+ Name:   midi-uart0
+--- a/arch/arm/boot/dts/overlays/merus-amp-overlay.dts
++++ b/arch/arm/boot/dts/overlays/merus-amp-overlay.dts
+@@ -57,4 +57,14 @@
+ 			status = "okay";
+ 		};
+ 	};
++
++	fragment@4 {
++		target = <&spi0>;
++		frag4: __overlay__ {
++		};
++	};
++
++	__overrides__ {
++		spioff = <&frag4>, "status=disabled";
++	};
+ };