From d2601193056ad9bc0dad1770b9cc492769d02777 Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Mon, 29 Aug 2022 21:08:22 -0500 Subject: dt-bindings: i2c: mv64xxx: Document DMA properties Allwinner's I2C offload engine includes bidirectional DMA support. Add the properties for describing this in the devicetree. "dmas" is optional because not all instances of the controller have their DRQs hooked up. For example, R_I2C0 and R_I2C1 on V536 have no DRQ number assigned. Signed-off-by: Samuel Holland Reviewed-by: Krzysztof Kozlowski Signed-off-by: Wolfram Sang --- .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'Documentation/devicetree/bindings') diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 0ec033e48830..63d665a4f9bb 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -66,6 +66,19 @@ properties: resets: maxItems: 1 + dmas: + items: + - description: RX DMA Channel + - description: TX DMA Channel + + dma-names: + items: + - const: rx + - const: tx + +dependencies: + dmas: [ dma-names ] + required: - compatible - reg -- cgit v1.2.3