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

   1 From 89f988c93882e1ac4ad7864ee9469aa02550090c Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 3 Jun 2016 21:56:40 +0100
   4 Subject: [PATCH] BCM270X_DT: Fix rpi-dac overlay
   5
   6 The rpi-dac overlay is almost identical to the hifiberry-dac overlay -
   7 the codec used is different but it also doesn't sit on the I2C bus. As
   8 a result, when the overlays were modified for dynamic loading and it
   9 was discovered that the hifiberry-dac overlay didn't work any more, the
  10 the rpi-dac overlay was also broken.
  11
  12 The failure was caused by the fact that outside a bus, device names are
  13 constructed from the concatenation of the path elements leading to it,
  14 so moving the codec instantiation inside /soc caused the device name
  15 to get a "soc" added, breaking ALSA's naming.
  16
  17 See: http://forum.kodi.tv/showthread.php?tid=269814&pid=2349776#pid2349776
  18
  19 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  20 ---
  21  arch/arm/boot/dts/overlays/rpi-dac-overlay.dts | 2 +-
  22  1 file changed, 1 insertion(+), 1 deletion(-)
  23
  24 --- a/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
  25 +++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
  26 @@ -13,7 +13,7 @@
  27         };
  28
  29         fragment@1 {
  30 -               target = <&soc>;
  31 +               target-path = "/";
  32                 __overlay__ {
  33                         pcm1794a-codec {
  34                                 #sound-dai-cells = <0>;