From 199e7688bdf7d188d70c3432c96ec13d8a14b341 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 22 May 2014 23:25:49 -0700 Subject: ASoC: rsnd: care DMA slave channel name for DT Renesas sound driver is supporting to use DMAEngine. But, DMA slave channel name "tx", "rx" is not enough in DT case. Becuase, it has many ports and path combination. This patch adds rsnd_dma_of_name() to find DMA channel name, for example memory to SSI0 is "mem_ssi0", SSI0 to memory is "ssi0_mem", SSI0 to SRC0 is "ssi0_src0", SRC0 to SSI0 is "src0_ssi0", SRC0 to DVC0 is "src0_dvc0"... Renesas sound want to use PIO transfer mode for some reasons. It will be PIO tranfer mode if device node doesn't have DMA settings. Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/renesas,rsnd.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt index a44e9179faf5..8346cab046cd 100644 --- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt +++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt @@ -20,6 +20,7 @@ Required properties: SSI subnode properties: - interrupts : Should contain SSI interrupt for PIO transfer - shared-pin : if shared clock pin +- pio-transfer : use PIO transfer mode SRC subnode properties: no properties at this point -- cgit v1.2.2