1 files changed, 23 insertions, 4 deletions

diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index 552e63972f14..352c2f32925e 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -4,6 +4,13 @@
         compatible = "nvidia,tegra114";
         interrupt-parent = <&gic>;
 
+        aliases {
+                serial0 = &uarta;
+                serial1 = &uartb;
+                serial2 = &uartc;
+                serial3 = &uartd;
+        };
+
         gic: interrupt-controller {
                 compatible = "arm,cortex-a15-gic";
                 #interrupt-cells = <3>;
@@ -99,38 +106,50 @@
                        0x70003000 0x40c>;       /* Mux registers */
         };
 
-        serial@70006000 {
+        /*
+         * There are two serial driver i.e. 8250 based simple serial
+         * driver and APB DMA based serial driver for higher baudrate
+         * and performace. To enable the 8250 based driver, the compatible
+         * is "nvidia,tegra114-uart", "nvidia,tegra20-uart" and to enable
+         * the APB DMA based serial driver, the comptible is
+         * "nvidia,tegra114-hsuart", "nvidia,tegra30-hsuart".
+         */
+        uarta: serial@70006000 {
                 compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
                 reg = <0x70006000 0x40>;
                 reg-shift = <2>;
                 interrupts = <0 36 0x04>;
+                nvidia,dma-request-selector = <&apbdma 8>;
                 status = "disabled";
                 clocks = <&tegra_car 6>;
         };
 
-        serial@70006040 {
+        uartb: serial@70006040 {
                 compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
                 reg = <0x70006040 0x40>;
                 reg-shift = <2>;
                 interrupts = <0 37 0x04>;
+                nvidia,dma-request-selector = <&apbdma 9>;
                 status = "disabled";
                 clocks = <&tegra_car 192>;
         };
 
-        serial@70006200 {
+        uartc: serial@70006200 {
                 compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
                 reg = <0x70006200 0x100>;
                 reg-shift = <2>;
                 interrupts = <0 46 0x04>;
+                nvidia,dma-request-selector = <&apbdma 10>;
                 status = "disabled";
                 clocks = <&tegra_car 55>;
         };
 
-        serial@70006300 {
+        uartd: serial@70006300 {
                 compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart";
                 reg = <0x70006300 0x100>;
                 reg-shift = <2>;
                 interrupts = <0 90 0x04>;
+                nvidia,dma-request-selector = <&apbdma 19>;
                 status = "disabled";
                 clocks = <&tegra_car 65>;
         };