From 6dcb144f7da634e4a0f8837e5076ef48e4d6ac12 Mon Sep 17 00:00:00 2001 From: Lanqing Liu Date: Wed, 13 Feb 2019 15:36:10 +0800 Subject: [PATCH] dt-bindings: spi: Add the DMA properties for the SPI dma mode Add the DMA properties for the SPI dma mode. Signed-off-by: Lanqing Liu Signed-off-by: Baolin Wang Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/spi/spi-sprd.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-sprd.txt b/Documentation/devicetree/bindings/spi/spi-sprd.txt index bad211a19da4..3c7eacce0ee3 100644 --- a/Documentation/devicetree/bindings/spi/spi-sprd.txt +++ b/Documentation/devicetree/bindings/spi/spi-sprd.txt @@ -14,6 +14,11 @@ Required properties: address on the SPI bus. Should be set to 1. - #size-cells: Should be set to 0. +Optional properties: +dma-names: Should contain names of the SPI used DMA channel. +dmas: Should contain DMA channels and DMA slave ids which the SPI used + sorted in the same order as the dma-names property. + Example: spi0: spi@70a00000{ compatible = "sprd,sc9860-spi"; @@ -21,6 +26,8 @@ spi0: spi@70a00000{ interrupts = ; clock-names = "spi", "source","enable"; clocks = <&clk_spi0>, <&ext_26m>, <&clk_ap_apb_gates 5>; + dma-names = "rx_chn", "tx_chn"; + dmas = <&apdma 11 11>, <&apdma 12 12>; #address-cells = <1>; #size-cells = <0>; };