[PATCH 23/32] arm64: dts: r8a7795: Tidyup Audio-DMAC channel for DVC

Simon Horman horms+renesas at verge.net.au
Mon Mar 20 01:57:34 PDT 2017


From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

Current	Audio-DMAC is assigned "rx" as Audio-DMAC0, "tx" as Audio-DMAC1.
Thus, DVC "tx" should be assigned as Audio-DMAC1, instead of Audio-DMAC0.

Because of this, current platform board (using SRC/DVC/SSI)
Playback/Capture both will use same Audio-DMAC0
(but it depends on audio data path).

First note is that this "rx" and "tx" are from each IP point,
it doesn't mean Playback/Capture.
Second note is that Audio DMAC assigned on DT is only for
Audio-DMAC, Audio-DMAC-peri-peri has no entry.

=> Audio-DMAC
-> Audio-DMAC-peri-peri
-- HW connection

Playback case

	[Mem] => [SRC]--[DVC] -> [SSI]--[Codec]
	      rx ~~~~~~~~~~~~
Capture

	[Mem] <= [DVC]--[SRC] <- [SSI]--[Codec]
	      tx ~~~~~~~~~~~~

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
---
 arch/arm64/boot/dts/renesas/r8a7795.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index 14772bc02125..55c09f1b89c9 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -1075,11 +1075,11 @@
 
 			rcar_sound,dvc {
 				dvc0: dvc-0 {
-					dmas = <&audma0 0xbc>;
+					dmas = <&audma1 0xbc>;
 					dma-names = "tx";
 				};
 				dvc1: dvc-1 {
-					dmas = <&audma0 0xbe>;
+					dmas = <&audma1 0xbe>;
 					dma-names = "tx";
 				};
 			};
-- 
2.7.0.rc3.207.g0ac5344




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