[PATCH] ARM: dts: rockchip: Add DMA tx and rx channels in UART interfaces for RK3288 SoCs

[Romain Perier]

ping :)

2015-06-16 19:19 GMT+02:00 Romain Perier <romain.perier at gmail.com>:
> This enable DMA capability for the corresponding UART interfaces, also it removes
> warning "ttyS%d - Failed to request dma" from kernel logs.
>
> Signed-off-by: Romain Perier <romain.perier at gmail.com>
> ---
>
> Changes since v1 ("[PATCH] ARM: dts: rockchip: Add dmac_bus rx and tx for uart2"):
>         - Add DMA tx and rx channels for all UART interfaces
>         - Rename commit summary
>
>  arch/arm/boot/dts/rk3288.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
> index 22316d0..1996452 100644
> --- a/arch/arm/boot/dts/rk3288.dtsi
> +++ b/arch/arm/boot/dts/rk3288.dtsi
> @@ -359,6 +359,8 @@
>                 clock-names = "baudclk", "apb_pclk";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&uart0_xfer>;
> +               dmas = <&dmac_peri 1>, <&dmac_peri 2>;
> +               dma-names = "tx", "rx";
>                 status = "disabled";
>         };
>
> @@ -372,6 +374,8 @@
>                 clock-names = "baudclk", "apb_pclk";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&uart1_xfer>;
> +               dmas = <&dmac_peri 3>, <&dmac_peri 4>;
> +               dma-names = "tx", "rx";
>                 status = "disabled";
>         };
>
> @@ -385,6 +389,8 @@
>                 clock-names = "baudclk", "apb_pclk";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&uart2_xfer>;
> +               dmas = <&dmac_bus_s 4>, <&dmac_bus_s 5>;
> +               dma-names = "tx", "rx";
>                 status = "disabled";
>         };
>
> @@ -398,6 +404,8 @@
>                 clock-names = "baudclk", "apb_pclk";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&uart3_xfer>;
> +               dmas = <&dmac_peri 7>, <&dmac_peri 8>;
> +               dma-names = "tx", "rx";
>                 status = "disabled";
>         };
>
> @@ -411,6 +419,8 @@
>                 clock-names = "baudclk", "apb_pclk";
>                 pinctrl-names = "default";
>                 pinctrl-0 = <&uart4_xfer>;
> +               dmas = <&dmac_peri 9>, <&dmac_peri 10>;
> +               dma-names = "tx", "rx";
>                 status = "disabled";
>         };
>
> --
> 1.9.1
>