openwrtv3/target/linux/brcm2708/patches-4.4/0382-BCM270X_DT-Fix-rpi-dac-overlay.patch
Álvaro Fernández Rojas 2b1c6b21b5 brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Also adds support for Raspberry Pi Compute Module 3 (untested).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2016-09-10 14:54:26 +02:00

34 lines
1.2 KiB
Diff

From d6b1e376414ff77bcfc449e7dcc0f1ee7b91a888 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 3 Jun 2016 21:56:40 +0100
Subject: [PATCH] BCM270X_DT: Fix rpi-dac overlay
The rpi-dac overlay is almost identical to the hifiberry-dac overlay -
the codec used is different but it also doesn't sit on the I2C bus. As
a result, when the overlays were modified for dynamic loading and it
was discovered that the hifiberry-dac overlay didn't work any more, the
the rpi-dac overlay was also broken.
The failure was caused by the fact that outside a bus, device names are
constructed from the concatenation of the path elements leading to it,
so moving the codec instantiation inside /soc caused the device name
to get a "soc" added, breaking ALSA's naming.
See: http://forum.kodi.tv/showthread.php?tid=269814&pid=2349776#pid2349776
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/overlays/rpi-dac-overlay.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
+++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
@@ -13,7 +13,7 @@
};
fragment@1 {
- target = <&soc>;
+ target-path = "/";
__overlay__ {
pcm1794a-codec {
#sound-dai-cells = <0>;