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 <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
