[PATCH 2/2] rockchip: dts: Enable UART DMA by adding default dma-names property

[Ed Wildgoose]

Kernel appears to need a dma-names set for DMA to actually enable. Set a
default dma-names property for all UARTs defined in the base rk356x-base
dtsi

This is tested on a Radxa Zero 3W (which has 5x UARTs) and removes the
warnings and enables DMA on this platform

Signed-off-by: Ed Wildgoose <lists at wildgooses.com>
---
 arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
index fd2214b6f..55240f76d 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi
@@ -1334,6 +1334,7 @@ uart1: serial at fe650000 {
 		clocks = <&cru SCLK_UART1>, <&cru PCLK_UART1>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 2>, <&dmac0 3>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart1m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1348,6 +1349,7 @@ uart2: serial at fe660000 {
 		clocks = <&cru SCLK_UART2>, <&cru PCLK_UART2>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 4>, <&dmac0 5>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart2m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1362,6 +1364,7 @@ uart3: serial at fe670000 {
 		clocks = <&cru SCLK_UART3>, <&cru PCLK_UART3>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 6>, <&dmac0 7>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart3m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1376,6 +1379,7 @@ uart4: serial at fe680000 {
 		clocks = <&cru SCLK_UART4>, <&cru PCLK_UART4>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 8>, <&dmac0 9>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart4m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1390,6 +1394,7 @@ uart5: serial at fe690000 {
 		clocks = <&cru SCLK_UART5>, <&cru PCLK_UART5>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 10>, <&dmac0 11>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart5m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1404,6 +1409,7 @@ uart6: serial at fe6a0000 {
 		clocks = <&cru SCLK_UART6>, <&cru PCLK_UART6>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 12>, <&dmac0 13>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart6m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1418,6 +1424,7 @@ uart7: serial at fe6b0000 {
 		clocks = <&cru SCLK_UART7>, <&cru PCLK_UART7>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 14>, <&dmac0 15>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart7m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1432,6 +1439,7 @@ uart8: serial at fe6c0000 {
 		clocks = <&cru SCLK_UART8>, <&cru PCLK_UART8>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 16>, <&dmac0 17>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart8m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
@@ -1446,6 +1454,7 @@ uart9: serial at fe6d0000 {
 		clocks = <&cru SCLK_UART9>, <&cru PCLK_UART9>;
 		clock-names = "baudclk", "apb_pclk";
 		dmas = <&dmac0 18>, <&dmac0 19>;
+		dma-names = "tx", "rx";
 		pinctrl-0 = <&uart9m0_xfer>;
 		pinctrl-names = "default";
 		reg-io-width = <4>;
-- 
2.49.0