ASoC: rsnd: explain extended Audio DMAC peri peri address

If SoC has extended Audio DMAC peri peri address,
DT needs to select it.
Otherwise, it can select normal Audio DMAC peri peri address.
Extended Audio DMAC peri peri address can use BUSIF4-7,
normal address can't.

Reported-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
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 c58af457a8318e4123fdfbac74ed7b28c4f74433..b34afa66fb000efd689b1b8d15cd0b4b40611bbb 100644 (file)
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -283,6 +283,8 @@ Required properties:
                                  required register is
                                   SRU/ADG/SSI      if generation1
                                   SRU/ADG/SSIU/SSI/AUDIO-DMAC-periperi if generation2/generation3
+                                  Select extended AUDIO-DMAC-periperi address if SoC has it,
+                                  otherwise select normal AUDIO-DMAC-periperi address.
 - reg-names                    : Should contain the register names.
                                   scu/adg/ssi  if generation1
                                   scu/adg/ssiu/ssi/audmapp if generation2/generation3