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dt-bindings: spi: Add the DMA properties for the SPI dma mode

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Add the DMA properties for the SPI dma mode.

Signed-off-by: Lanqing Liu <lanqing.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Lanqing Liu 2019-02-13 15:36:10 +08:00 committed by Mark Brown
parent de082d866c
commit 6dcb144f7d
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GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/spi/spi-sprd.txt
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@ -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 = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
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>;
};