bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch b/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch
new file mode 100644
index 0000000000..950ed036a7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0595-drm-panel-simple-Allow-the-bus-format-to-be-read-fro.patch
@@ -0,0 +1,28 @@
+From 4870e7a4d23d73761d5f3be18e29d9ff960e292c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 2 Dec 2021 18:16:21 +0000
+Subject: [PATCH] drm/panel-simple: Allow the bus format to be read
+ from DT for panel-dpi
+
+The "panel-dpi" compatible string configures panel from device tree,
+but it doesn't provide any way of configuring the bus format (colour
+representation), nor does it populate it.
+
+Add a DT parameter "bus-format" that allows the MEDIA_BUS_FMT_xxx value
+to be specified from device tree.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ drivers/gpu/drm/panel/panel-simple.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/gpu/drm/panel/panel-simple.c
++++ b/drivers/gpu/drm/panel/panel-simple.c
+@@ -598,6 +598,7 @@ static int panel_dpi_probe(struct device
+ 
+ 	of_property_read_u32(np, "width-mm", &desc->size.width);
+ 	of_property_read_u32(np, "height-mm", &desc->size.height);
++	of_property_read_u32(np, "bus-format", &desc->bus_format);
+ 
+ 	/* Extract bus_flags from display_timing */
+ 	bus_flags = 0;