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authorLanqing Liu <lanqing.liu@unisoc.com>2019-02-13 10:36:10 +0300
committerMark Brown <broonie@kernel.org>2019-02-13 15:20:51 +0300
commit6dcb144f7da634e4a0f8837e5076ef48e4d6ac12 (patch)
tree8ed2597aa02ced76e27a1a8f9a3e15980f779ad1 /Documentation/devicetree
parentde082d866cced9e172ca909b084f91df631ae7fe (diff)
downloadlinux-6dcb144f7da634e4a0f8837e5076ef48e4d6ac12.tar.xz
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 <lanqing.liu@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/spi/spi-sprd.txt7
1 files changed, 7 insertions, 0 deletions
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 = <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>;
};