Thread (50 messages) 50 messages, 5 authors, 2013-07-10

Re: [PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding

From: Richard Genoud <hidden>
Date: 2013-07-09 13:32:14
Also in: alsa-devel, linux-arm-kernel, lkml

2013/7/9 Nicolas Ferre [off-list ref]:
On 09/07/2013 15:19, Richard Genoud :
quoted
2013/7/9 Richard Genoud [off-list ref]:
quoted
As atmel-ssc can be used with DMA, the documentation should be updated.
Also, a configuration DMA example is given.

Signed-off-by: Richard Genoud <redacted>
---
  .../devicetree/bindings/misc/atmel-ssc.txt         |   24
++++++++++++++++++--
  1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt
b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
index 38e51ad..96958ca 100644
--- a/Documentation/devicetree/bindings/misc/atmel-ssc.txt
+++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
@@ -6,10 +6,30 @@ Required properties:
         - atmel,at91sam9g45-ssc: support dma transfer
  - reg: Should contain SSC registers location and length
  - interrupts: Should contain SSC interrupt
+For dma transfer:
+- dmas: DMA specifier, consisting of a phandle to DMA controller node,
+  the memory interface and SSC DMA channel ID (for tx and rx).
+  See Documentation/devicetree/bindings/dma/atmel-dma.txt for details.
+- dma-names: Must be "tx", "rx".

-Example:
+
+Examples:
  ssc0: ssc@fffbc000 {
         compatible = "atmel,at91rm9200-ssc";
         reg = <0xfffbc000 0x4000>;
-       interrupts = <14 4 5>;
+       interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
maybe I should not use macro in the documentation (not sure if I should or
not).

absolutely.
ok, thanks, changing that in next version.
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