The filename matches mtk-uart-apdma.c.
So using "mtk-uart-apdma.txt" should be better.
And add some property.
Signed-off-by: Long Cheng <long.cheng@xxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33 ------------
.../devicetree/bindings/dma/mtk-uart-apdma.txt | 55 ++++++++++++++++++++
2 files changed, 55 insertions(+), 33 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
create mode 100644 Documentation/devicetree/bindings/dma/mtk-uart-apdma.txt
diff --git a/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt b/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
deleted file mode 100644
index 3fe0961..0000000
--- a/Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-* 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>;
- };
-
diff --git a/Documentation/devicetree/bindings/dma/mtk-uart-apdma.txt b/Documentation/devicetree/bindings/dma/mtk-uart-apdma.txt
new file mode 100644
index 0000000..e0424b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/mtk-uart-apdma.txt
@@ -0,0 +1,55 @@
+* 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.
+ One interrupt per dma-requests, or 8 if no dma-requests property is present
+
+- dma-requests: The number of DMA channels
+
+- 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
+
+- mediatek,dma-33bits: Present if the DMA requires support
+
+Examples:
+
+ apdma: dma-controller@11000400 {
+ compatible = "mediatek,mt2712-uart-dma";
+ reg = <0 0x11000400 0 0x80>,
+ <0 0x11000480 0 0x80>,
+ <0 0x11000500 0 0x80>,
+ <0 0x11000580 0 0x80>,
+ <0 0x11000600 0 0x80>,
+ <0 0x11000680 0 0x80>,
+ <0 0x11000700 0 0x80>,
+ <0 0x11000780 0 0x80>,
+ <0 0x11000800 0 0x80>,
+ <0 0x11000880 0 0x80>,
+ <0 0x11000900 0 0x80>,
+ <0 0x11000980 0 0x80>;
+ interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 105 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 106 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 107 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 108 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 109 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 111 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 112 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>,
+ <GIC_SPI 114 IRQ_TYPE_LEVEL_LOW>;
+ dma-requests = <12>;
+ clocks = <&pericfg CLK_PERI_AP_DMA>;
+ clock-names = "apdma";
+ mediatek,dma-33bits;
+ #dma-cells = <1>;
+ };
+
--
1.7.9.5
