arm: dts: add pwm support for MediaTek SoCs

This patch add pwm support for mt7622, mt7623 and mt7629 SoCs
Signed-off-by: NSam Shih <sam.shih@mediatek.com>

arch/arm/dts/mt7622.dtsi

@@ -227,4 +227,23 @@
 		#clock-cells = <1>;
 	};
 
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7622-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM_PD>,
+			 <&pericfg CLK_PERI_PWM1_PD>,
+			 <&pericfg CLK_PERI_PWM2_PD>,
+			 <&pericfg CLK_PERI_PWM3_PD>,
+			 <&pericfg CLK_PERI_PWM4_PD>,
+			 <&pericfg CLK_PERI_PWM5_PD>,
+			 <&pericfg CLK_PERI_PWM6_PD>;
+		clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4",
+			      "pwm5", "pwm6";
+		status = "disabled";
+	};
+
 };

arch/arm/dts/mt7623.dtsi

@@ -400,4 +400,21 @@
 		mediatek,ethsys = <&ethsys>;
 		status = "disabled";
 	};
+
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7623-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM>,
+			 <&pericfg CLK_PERI_PWM1>,
+			 <&pericfg CLK_PERI_PWM2>,
+			 <&pericfg CLK_PERI_PWM3>,
+			 <&pericfg CLK_PERI_PWM4>,
+			 <&pericfg CLK_PERI_PWM5>;
+		clock-names = "top", "main", "pwm1", "pwm2", "pwm3", "pwm4",
+			      "pwm5";
+		status = "disabled";
+	};
 };

arch/arm/dts/mt7629.dtsi

@@ -281,4 +281,20 @@
 		reg = <0x1b130000 0x1000>;
 		#clock-cells = <1>;
 	};
+
+	pwm: pwm@11006000 {
+		compatible = "mediatek,mt7629-pwm";
+		reg = <0x11006000 0x1000>;
+		#clock-cells = <1>;
+		#pwm-cells = <2>;
+		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_PWM_SEL>,
+			 <&pericfg CLK_PERI_PWM_PD>,
+			 <&pericfg CLK_PERI_PWM1_PD>;
+		clock-names = "top", "main", "pwm1";
+		assigned-clocks = <&topckgen CLK_TOP_PWM_SEL>;
+		assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL2_D4>;
+		status = "disabled";
+	};
+
 };