From: Lanqing Liu <lanqing.liu@xxxxxxxxxx>
Add the DMA properties for the SPI dma mode.
Signed-off-by: Lanqing Liu <lanqing.liu@xxxxxxxxxx>
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
---
Changes from v1:
- Remove sprd,dma-slave-ids property.
---
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 bad211a..3c7eacc 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>;
};
--
1.7.9.5
