ASoC: rsnd: Document optional reset properties

Document the optional properties for describing module resets, to
support resetting these modules on R-Car Gen2 and Gen3.

Note that the audio module has resets for the Serial Sound Interfaces
only.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 13cb21d53b8bdf5c5332257548a4c2ab209998b9..7246bb268bf9bab6a49c78af481455a8fb744e42 100644 (file)
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -379,6 +379,9 @@ Optional properties:
 - clock-frequency              : for all audio_clkout0/1/2/3
 - clkout-lr-asynchronous       : boolean property. it indicates that audio_clkoutn
                                  is asynchronizes with lr-clock.
+- resets                       : References to SSI resets.
+- reset-names                  : List of valid reset names.
+                                 "ssi-all", "ssi.X"
 
 SSI subnode properties:
 - interrupts                   : Should contain SSI interrupt for PIO transfer