[PATCH 2/2] arm64: dts: allwinner: sun50i-h6: add UART DMA channels
From: Chen-Yu Tsai
Date: Tue Mar 24 2026 - 12:34:22 EST
All the UARTs support DMA and are hooked up to the DMA controller.
Add the DMA channels for the UARTs
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxxxx>
---
arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 73e8604315c5..72ce1a75647b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -540,6 +540,8 @@ uart0: serial@5000000 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART0>;
resets = <&ccu RST_BUS_UART0>;
+ dmas = <&dma 14>, <&dma 14>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -551,6 +553,8 @@ uart1: serial@5000400 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART1>;
resets = <&ccu RST_BUS_UART1>;
+ dmas = <&dma 15>, <&dma 15>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -562,6 +566,8 @@ uart2: serial@5000800 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART2>;
resets = <&ccu RST_BUS_UART2>;
+ dmas = <&dma 16>, <&dma 16>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -573,6 +579,8 @@ uart3: serial@5000c00 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART3>;
resets = <&ccu RST_BUS_UART3>;
+ dmas = <&dma 17>, <&dma 17>;
+ dma-names = "tx", "rx";
status = "disabled";
};
--
2.47.3