ARM: dts: exynos: Enable DMA support for UART modules on Exynos5 SoCs

UART modules can use DMA for offloading data transfers and reducing
interrupts, so enable this feature for Exynos5 boards. Tested on
Google ChromeBook Snow (Exynos5250), Odroid XU (Exynos5410) and Odroid
XU3 (Exynos5422) boards.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Tested-by: NAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos5250.dtsi

@@ -1043,21 +1043,29 @@
 &serial_0 {
 	clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 13>, <&pdma0 14>;
+	dma-names = "rx", "tx";
 };
 
 &serial_1 {
 	clocks = <&clock CLK_UART1>, <&clock CLK_SCLK_UART1>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 15>, <&pdma1 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_2 {
 	clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 15>, <&pdma0 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_3 {
 	clocks = <&clock CLK_UART3>, <&clock CLK_SCLK_UART3>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 17>, <&pdma1 18>;
+	dma-names = "rx", "tx";
 };
 
 #include "exynos5250-pinctrl.dtsi"

arch/arm/boot/dts/exynos5410.dtsi

@@ -340,21 +340,29 @@
 &serial_0 {
 	clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 13>, <&pdma0 14>;
+	dma-names = "rx", "tx";
 };
 
 &serial_1 {
 	clocks = <&clock CLK_UART1>, <&clock CLK_SCLK_UART1>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 15>, <&pdma1 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_2 {
 	clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 15>, <&pdma0 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_3 {
 	clocks = <&clock CLK_UART3>, <&clock CLK_SCLK_UART3>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 17>, <&pdma1 18>;
+	dma-names = "rx", "tx";
 };
 
 &sss {

arch/arm/boot/dts/exynos5420.dtsi

@@ -1406,21 +1406,29 @@
 &serial_0 {
 	clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 13>, <&pdma0 14>;
+	dma-names = "rx", "tx";
 };
 
 &serial_1 {
 	clocks = <&clock CLK_UART1>, <&clock CLK_SCLK_UART1>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 15>, <&pdma1 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_2 {
 	clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma0 15>, <&pdma0 16>;
+	dma-names = "rx", "tx";
 };
 
 &serial_3 {
 	clocks = <&clock CLK_UART3>, <&clock CLK_SCLK_UART3>;
 	clock-names = "uart", "clk_uart_baud0";
+	dmas = <&pdma1 17>, <&pdma1 18>;
+	dma-names = "rx", "tx";
 };
 
 &sss {