On 09/07/2013 15:19, Richard Genoud :

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 at 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.

quoted

  };
+
+
+ssc0: ssc at f0010000 {
+      compatible = "atmel,at91sam9g45-ssc";
+      reg = <0xf0010000 0x4000>;
+      interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>;
+      dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(13)>,
+            <&dma0 1 AT91_DMA_CFG_PER_ID(14)>;

same here

quoted

+      dma-names = "tx", "rx";
+      pinctrl-names = "default";
+      pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>;
+      status = "disabled";
+};
+
--
1.7.10.4

-- 
Nicolas Ferre