openwrt/target/linux/bcm27xx/patches-6.6/950-0692-dt-Add-drm_fbN_vc4-overrides-for-Pi0-4.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

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1.2 KiB
Diff

From 2e1864a052cd55c647be4c4d74643b961b1e4da2 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 0692/1085] 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/broadcom/bcm270x-rpi.dtsi | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/arm/boot/dts/broadcom/bcm270x-rpi.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm270x-rpi.dtsi
@@ -1,7 +1,7 @@
/* Downstream modifications to bcm2835-rpi.dtsi */
/ {
- aliases {
+ aliases: aliases {
aux = &aux;
sound = &sound;
soc = &soc;
@@ -30,6 +30,9 @@
fb = &fb;
thermal = &thermal;
axiperf = &axiperf;
+ drm_fb0_vc4 = <&aliases>, "drm-fb0=",&vc4;
+ drm_fb1_vc4 = <&aliases>, "drm-fb1=",&vc4;
+ drm_fb2_vc4 = <&aliases>, "drm-fb2=",&vc4;
};
/* Define these notional regulators for use by overlays */