Re: [PATCH v12 08/11] spi: omap2-mcspi: add generic DMA request support to the DT binding

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Hi Benoit,
On Friday 21 June 2013 02:36 AM, Joel A Fernandes wrote:
From: Matt Porter<mporter@xxxxxx>

The binding definition is based on the generic DMA request binding

Signed-off-by: Matt Porter<mporter@xxxxxx>
Signed-off-by: Joel A Fernandes<joelagnel@xxxxxx>
---
  Documentation/devicetree/bindings/spi/omap-spi.txt |   27 +++++++++++++++++++-
  1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/spi/omap-spi.txt b/Documentation/devicetree/bindings/spi/omap-spi.txt
index 938809c..4c85c4c 100644
--- a/Documentation/devicetree/bindings/spi/omap-spi.txt
+++ b/Documentation/devicetree/bindings/spi/omap-spi.txt
@@ -10,7 +10,18 @@ Required properties:
  			  input. The default is D0 as input and
  			  D1 as output.

-Example:
+Optional properties:
+- dmas: List of DMA specifiers with the controller specific format
+	as described in the generic DMA client binding. A tx and rx
+	specifier is required for each chip select.
+- dma-names: List of DMA request names. These strings correspond
+	1:1 with the DMA specifiers listed in dmas. The string naming
+	is to be "rxN" and "txN" for RX and TX requests,
+	respectively, where N equals the chip select number.
+
+Examples:
+
+[hwmod populated DMA resources]

  mcspi1: mcspi@1 {
      #address-cells =<1>;
@@ -20,3 +31,17 @@ mcspi1: mcspi@1 {
      ti,spi-num-cs =<4>;
  };

+[generic DMA request binding]
+
+mcspi1: mcspi@1 {
+    #address-cells =<1>;
+    #size-cells =<0>;
+    compatible = "ti,omap4-mcspi";
+    ti,hwmods = "mcspi1";
+    ti,spi-num-cs =<2>;
+    dmas =<&edma 42
+	&edma 43
+	&edma 44
+	&edma 45>;
+    dma-names = "tx0", "rx0", "tx1", "rx1";
+};
If the patch looks good to you, these can go independently in your
tree.

Reviewed-by: Sourav Poddar <sourav.poddar@xxxxxx>

~Sourav

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