On Wed, Feb 13, 2019 at 1:37 AM Baolin Wang <baolin.wang@xxxxxxxxxx> wrote:
>
> From: Lanqing Liu <lanqing.liu@xxxxxxxxxx>
>
> Add the DMA properties for the SPI dma mode.
>
> Signed-off-by: Lanqing Liu <lanqing.liu@xxxxxxxxxx>
> Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
> ---
> Changes from v1:
> - Remove sprd,dma-slave-ids property.
> ---
> Documentation/devicetree/bindings/spi/spi-sprd.txt | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/spi/spi-sprd.txt b/Documentation/devicetree/bindings/spi/spi-sprd.txt
> index bad211a..3c7eacc 100644
> --- a/Documentation/devicetree/bindings/spi/spi-sprd.txt
> +++ b/Documentation/devicetree/bindings/spi/spi-sprd.txt
> @@ -14,6 +14,11 @@ Required properties:
> address on the SPI bus. Should be set to 1.
> - #size-cells: Should be set to 0.
>
> +Optional properties:
> +dma-names: Should contain names of the SPI used DMA channel.
> +dmas: Should contain DMA channels and DMA slave ids which the SPI used
> + sorted in the same order as the dma-names property.
These need to define the order and names.
> +
> Example:
> spi0: spi@70a00000{
> compatible = "sprd,sc9860-spi";
> @@ -21,6 +26,8 @@ spi0: spi@70a00000{
> interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> clock-names = "spi", "source","enable";
> clocks = <&clk_spi0>, <&ext_26m>, <&clk_ap_apb_gates 5>;
> + dma-names = "rx_chn", "tx_chn";
Everyone else uses "rx" and "tx". Do you really need something different?
> + dmas = <&apdma 11 11>, <&apdma 12 12>;
> #address-cells = <1>;
> #size-cells = <0>;
> };
> --
> 1.7.9.5
>
