[PATCH v12 08/11] spi: omap2-mcspi: add generic DMA request support to the DT binding
Sourav Poddar
sourav.poddar at ti.com
Fri Jun 21 20:35:35 EST 2013
Hi Benoit,
On Friday 21 June 2013 02:36 AM, Joel A Fernandes wrote:
> From: Matt Porter<mporter at ti.com>
>
> The binding definition is based on the generic DMA request binding
>
> Signed-off-by: Matt Porter<mporter at ti.com>
> Signed-off-by: Joel A Fernandes<joelagnel at ti.com>
> ---
> 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 at 1 {
> #address-cells =<1>;
> @@ -20,3 +31,17 @@ mcspi1: mcspi at 1 {
> ti,spi-num-cs =<4>;
> };
>
> +[generic DMA request binding]
> +
> +mcspi1: mcspi at 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 at ti.com>
~Sourav
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