arm64: dts: renesas: ulcb: Add sample Audio Codec settings

ulcb{-kf} needs amixer settings to use Audio.
Add Sample settings for it, for not to forget.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/87wmh6pqje.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 5c211ed83049d5a4e1fe8aa4ad18aac9f70501de..2a157d1efb3d32306a637bcabff884f19741016b 100644 (file)
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -4,8 +4,24 @@
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
  * Copyright (C) 2017 Cogent Embedded, Inc.
+ *
+ * Sample Audio settings:
+ *
+ *     > amixer set "DVC Out" 1%
+ *     > amixer set "DVC In"  20%
+ *
+ *     // if you use xxxx-mix+split.dtsi
+ *     > amixer -D hw:1 set "pcm3168a DAC1" 50%
+ *     > amixer -D hw:1 set "pcm3168a DAC2" 50%
+ *     > amixer -D hw:1 set "pcm3168a DAC3" 50%
+ *     > amixer -D hw:1 set "pcm3168a DAC4" 50%
+ *
+ *     // else
+ *     > amixer -D hw:1 set "DAC1" 50%
+ *     > amixer -D hw:1 set "DAC2" 50%
+ *     > amixer -D hw:1 set "DAC3" 50%
+ *     > amixer -D hw:1 set "DAC4" 50%
  */
-
 / {
        aliases {
                serial1 = &hscif0;

diff --git a/arch/arm64/boot/dts/renesas/ulcb.dtsi b/arch/arm64/boot/dts/renesas/ulcb.dtsi
index cb11abba7befe44b9f7a5bfc1aa035bb73931f22..0c58d816c375fdbca790c1b6a28908ef922b392b 100644 (file)
--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -4,6 +4,11 @@
  *
  * Copyright (C) 2016 Renesas Electronics Corp.
  * Copyright (C) 2016 Cogent Embedded, Inc.
+ *
+ * Sample Audio settings:
+ *
+ *     > amixer set "DVC Out" 1%
+ *     > amixer set "DVC In"  20%
  */
 
 #include <dt-bindings/gpio/gpio.h>