add uart dma bindings
Signed-off-by: Long Cheng <long.cheng@xxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33 ++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
diff --git a/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt b/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
new file mode 100644
index 0000000..3fe0961
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
@@ -0,0 +1,33 @@
+* Mediatek UART APDMA Controller
+
+Required properties:
+- compatible should contain:
+ * "mediatek,mt2712-uart-dma" for MT2712 compatible APDMA
+ * "mediatek,mt6577-uart-dma" for MT6577 and all of the above
+
+- reg: The base address of the APDMA register bank.
+
+- interrupts: A single interrupt specifier.
+
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names: The APDMA clock for register accesses
+
+Examples:
+
+ apdma: dma-controller@11000380 {
+ compatible = "mediatek,mt2712-uart-dma";
+ reg = <0 0x11000380 0 0x400>;
+ interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 65 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 66 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 67 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 68 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 69 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 70 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&pericfg CLK_PERI_AP_DMA>;
+ clock-names = "apdma";
+ #dma-cells = <1>;
+ };
+
--
1.7.9.5
