| Message ID | 20230218223959.116358-1-marex@denx.de |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] dt-bindings: serial: imx: Document optional DMA properties | expand |
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; };
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 . Signed-off-by: Marek Vasut <marex@denx.de> --- Cc: Fabio Estevam <festevam@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Shawn Guo <shawnguo@kernel.org> Cc: devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-serial@vger.kernel.org --- .../devicetree/bindings/serial/fsl-imx-uart.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+)