ARM: dtsi: add pwm node for sun8i R40.

index 6f4c9ca..cc05b2c 100644
@@ -317,6 +317,7 @@
 			clock-names = "hosc", "losc";
 			#clock-cells = <1>;
 			#reset-cells = <1>;
+
 		};
 
 		pio: pinctrl at 1c20800 {

@@ -373,6 +374,11 @@
 				bias-pull-up;
 			};
 
+			pwm_ch0_pin: pwm-ch0-pin {
+				pins = "PB2";
+				function = "pwm";
+			};
+
 			uart0_pb_pins: uart0-pb-pins {
 				pins = "PB22", "PB23";
 				function = "uart0";

@@ -384,6 +390,17 @@
 			reg = <0x01c20c90 0x10>;
 		};
 
+		pwm: pwm at 1c23400 {
+			compatible = "allwinner,sun8i-r40-pwm";
+			reg = <0x01c23400 0x400>;
+			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&osc24M>, <&ccu CLK_APB1>;
+			clock-names = "mux-0", "mux-1";
+			pwm-channels = <8>;
+			#pwm-cells = <3>;
+			status = "disabled";
+		};
+
 		uart0: serial at 1c28000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0x01c28000 0x400>;