[PATCH 13/31] ARM: dts: r8a7790: Tidyup Audio-DMAC channel for DVC
Simon Horman
horms+renesas at verge.net.au
Mon Mar 20 01:57:52 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 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/arm/boot/dts/r8a7790.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
index 20cf191e0852..495c583054a8 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -1738,11 +1738,11 @@
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
More information about the linux-arm-kernel
mailing list