openwrt/target/linux/bcm27xx/patches-5.10/950-0452-ARM-dts-Declare-Pi400-and-CM4-have-no-audio-pins.patch
Álvaro Fernández Rojas 8299d1f057 bcm27xx: add kernel 5.10 support
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-08-21 19:07:07 +02:00

42 lines
1.1 KiB
Diff

From a3028b49ed28dfcd27fb12dd811ef5572fc80c30 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Wed, 3 Feb 2021 16:23:43 +0000
Subject: [PATCH] ARM: dts: Declare Pi400 and CM4 have no audio pins
The audio_pins node is left as a placeholder for the audremap overlay,
and it must have (empty) brcm,function and brcm,pins properties
otherwise it will be rejected by the pinctrl driver.
See: https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=301891
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/bcm2711-rpi-400.dts | 4 ++--
arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 2 ++
2 files changed, 4 insertions(+), 2 deletions(-)
--- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
@@ -565,8 +565,8 @@
&gpio {
audio_pins: audio_pins {
- brcm,pins = <40 41>;
- brcm,function = <4>;
+ brcm,pins = <>;
+ brcm,function = <>;
};
};
--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
@@ -556,6 +556,8 @@
&gpio {
audio_pins: audio_pins {
+ brcm,pins = <>;
+ brcm,function = <>;
};
};