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| author | Marek Vasut <marex@denx.de> | 2023-02-19 15:22:49 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-09 17:12:10 +0100 |
| commit | cf8d4027a748b713d239cedaa77193e2e60b8811 (patch) | |
| tree | f0d99fe0f333ccbd791f115442ff12562c39a08a | |
| parent | 728648c7c8bb054023b9b9f367e349d5b0afafd8 (diff) | |
| download | linux-next-cf8d4027a748b713d239cedaa77193e2e60b8811.tar.gz | |
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 <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230219142250.10176-1-marex@denx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml index 4cbe76e1715b..c22aab8c55f8 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; }; |