ASoC: rsnd: add AUDIO_CLKOUT support

Renesas sound has AUDIO_CLKOUT (in Gen1/Gen2) AUDIO_CLKOUT1/2/3 (in Gen3)
This patch support these patches as clock provider.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index bf6fd1af0a11..c57cbd65736c 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -34,6 +34,9 @@ Required properties:
                                   see below for detail.
 - #sound-dai-cells              : it must be 0 if your system is using single DAI
                                   it must be 1 if your system is using multi  DAI
+- #clock-cells                  : it must be 0 if your system has audio_clkout
+                                  it must be 1 if your system has audio_clkout0/1/2/3
+- clock-frequency               : for all audio_clkout0/1/2/3
 
 SSI subnode properties:
 - interrupts                    : Should contain SSI interrupt for PIO transfer