[PATCH 1/2] arm64: dts: allwinner: sun50i-a64: add UART DMA channels
From: Chen-Yu Tsai
Date: Tue Mar 24 2026 - 12:26:59 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-a64.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 0fecf0abb204..04a26762a19a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -1000,6 +1000,8 @@ uart0: serial@1c28000 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART0>;
resets = <&ccu RST_BUS_UART0>;
+ dmas = <&dma 6>, <&dma 6>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -1011,6 +1013,8 @@ uart1: serial@1c28400 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART1>;
resets = <&ccu RST_BUS_UART1>;
+ dmas = <&dma 7>, <&dma 7>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -1022,6 +1026,8 @@ uart2: serial@1c28800 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART2>;
resets = <&ccu RST_BUS_UART2>;
+ dmas = <&dma 8>, <&dma 8>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -1033,6 +1039,8 @@ uart3: serial@1c28c00 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART3>;
resets = <&ccu RST_BUS_UART3>;
+ dmas = <&dma 9>, <&dma 9>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -1044,6 +1052,8 @@ uart4: serial@1c29000 {
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART4>;
resets = <&ccu RST_BUS_UART4>;
+ dmas = <&dma 10>, <&dma 10>;
+ dma-names = "tx", "rx";
status = "disabled";
};
--
2.47.3