openwrt_lede/target/linux/brcm2708/patches-4.4/0381-BCM270X_DT-Fix-rpi-dac-overlay.patch

From 89f988c93882e1ac4ad7864ee9469aa02550090c 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>;