From: Marek Vasut Date: Sun, 19 Feb 2023 14:22:49 +0000 (+0100) Subject: dt-bindings: serial: imx: Document optional DMA properties X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cf8d4027a748b713d239cedaa77193e2e60b8811;p=linux.git dt-bindings: serial: imx: Document optional DMA properties The UART IP can be connected to DMA engine, document the properties in DT bindings. Update example to match Linux arch/arm/boot/dts/imx51.dtsi . Acked-by: Krzysztof Kozlowski Signed-off-by: Marek Vasut Link: https://lore.kernel.org/r/20230219142250.10176-1-marex@denx.de Signed-off-by: Greg Kroah-Hartman --- diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml index 4cbe76e1715b7..c22aab8c55f83 100644 --- a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml +++ b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml @@ -49,6 +49,16 @@ properties: reg: maxItems: 1 + dmas: + items: + - description: DMA controller phandle and request line for RX + - description: DMA controller phandle and request line for TX + + dma-names: + items: + - const: rx + - const: tx + interrupts: maxItems: 1 @@ -100,6 +110,8 @@ examples: compatible = "fsl,imx51-uart", "fsl,imx21-uart"; reg = <0x73fbc000 0x4000>; interrupts = <31>; + dmas = <&sdma 18 4 1>, <&sdma 19 4 2>; + dma-names = "rx", "tx"; uart-has-rtscts; fsl,dte-mode; };