ARM: dts: rockchip: use DMA channels for UARTs for RK3288

This patch enables to use DMAC for all UARTs that are connected to
dmac_peri core for Rochchip RK3288.

Only uart2 is connected different DMAC (dmac_bus_s) so keep current
settings on this patch.

Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Link: https://lore.kernel.org/r/20200315095115.10106-1-katsuhiro@katsuster.net
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 8bcb4a5..e9f8a44 100644 (file)
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -420,6 +420,8 @@
                reg-io-width = <4>;
                clocks = <&cru SCLK_UART0>, <&cru PCLK_UART0>;
                clock-names = "baudclk", "apb_pclk";
+               dmas = <&dmac_peri 1>, <&dmac_peri 2>;
+               dma-names = "tx", "rx";
                pinctrl-names = "default";
                pinctrl-0 = <&uart0_xfer>;
                status = "disabled";
@@ -433,6 +435,8 @@
                reg-io-width = <4>;
                clocks = <&cru SCLK_UART1>, <&cru PCLK_UART1>;
                clock-names = "baudclk", "apb_pclk";
+               dmas = <&dmac_peri 3>, <&dmac_peri 4>;
+               dma-names = "tx", "rx";
                pinctrl-names = "default";
                pinctrl-0 = <&uart1_xfer>;
                status = "disabled";
@@ -459,6 +463,8 @@
                reg-io-width = <4>;
                clocks = <&cru SCLK_UART3>, <&cru PCLK_UART3>;
                clock-names = "baudclk", "apb_pclk";
+               dmas = <&dmac_peri 7>, <&dmac_peri 8>;
+               dma-names = "tx", "rx";
                pinctrl-names = "default";
                pinctrl-0 = <&uart3_xfer>;
                status = "disabled";
@@ -472,6 +478,8 @@
                reg-io-width = <4>;
                clocks = <&cru SCLK_UART4>, <&cru PCLK_UART4>;
                clock-names = "baudclk", "apb_pclk";
+               dmas = <&dmac_peri 9>, <&dmac_peri 10>;
+               dma-names = "tx", "rx";
                pinctrl-names = "default";
                pinctrl-0 = <&uart4_xfer>;
                status = "disabled";