openwrt/target/linux/bcm27xx/patches-6.1/950-1050-dt-Add-drm_fbN_vc4-overrides-for-Pi0-4.patch
Marty Jones 2e715fb4fc bcm27xx: update 6.1 patches to latest version
Add support for BCM2712 (Raspberry Pi 5).
3bb5880ab3
Patches were generated from the diff between linux kernel branch linux-6.1.y
and rpi-6.1.y from raspberry pi kernel source:
- git format-patch linux-6.1.y...rpi-6.1.y

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

Signed-off-by: Marty Jones <mj8263788@gmail.com>
[Remove applied and reverted patches, squash patches and config commits]
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-01-25 17:46:45 +01:00

38 lines
1.1 KiB
Diff

From eccaa8588fca9c9ec950664f1d5894bd826b57b0 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 23 Oct 2023 14:10:15 +0100
Subject: [PATCH] dt: Add drm_fbN_vc4 overrides for Pi0-4
Follows up '61b138adaead ("dt: Add overrides for drm framebuffer
allocations on Pi5")' with an equivalent for Pi0-4.
These will have no effect on most normal systems, but drm_fb0_vc4
will stop SPI displays jumping in and claiming /dev/fb0.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/bcm270x-rpi.dtsi | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/arm/boot/dts/bcm270x-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm270x-rpi.dtsi
@@ -1,7 +1,7 @@
/* Downstream modifications to bcm2835-rpi.dtsi */
/ {
- aliases {
+ aliases: aliases {
aux = &aux;
sound = &sound;
soc = &soc;
@@ -98,6 +98,9 @@
sdio_overclock = <&mmc>,"brcm,overclock-50:0",
<&mmcnr>,"brcm,overclock-50:0";
axiperf = <&axiperf>,"status";
+ drm_fb0_vc4 = <&aliases>, "drm-fb0=",&vc4;
+ drm_fb1_vc4 = <&aliases>, "drm-fb1=",&vc4;
+ drm_fb2_vc4 = <&aliases>, "drm-fb2=",&vc4;
};
};