@@ -7,8 +7,18 @@ Required properties:
- ti,spi-num-cs : Number of chipselect supported by the instance.
- ti,hwmods: Name of the hwmod associated to the McSPI
+Optional properties:
+- dmas: List of DMA controller phandle and DMA request ordered
+ pairs. One tx and one rx pair is required for each chip
+ select.
+- dma-names: List of DMA request names. These strings correspond
+ 1:1 with the ordered pairs in dmas. The string naming is
+ to be "rxN" and "txN" for RX and TX requests,
+ respectively, where N equals the chip select number.
-Example:
+Examples:
+
+[hwmod populated DMA resources]
mcspi1: mcspi@1 {
#address-cells = <1>;
@@ -18,3 +28,18 @@ 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";
+};
+
The binding definition is based on the generic DMA request binding. Signed-off-by: Matt Porter <mporter@ti.com> --- Documentation/devicetree/bindings/spi/omap-spi.txt | 27 +++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-)