ARM: dts: imx6dl-yapp43: Enable pwm-beeper on boards with speaker

Lynx, Pegasus and Pegasus+ boards have a speaker connected to the PWM3.
Enable a pwm-beeper on these boards so the system can produce simple
sounds.

Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6dl-yapp4-lynx.dts

@@ -21,6 +21,10 @@
 	status = "okay";
 };
 
+&beeper {
+	status = "okay";
+};
+
 &lcd_display {
 	status = "okay";
 };
@@ -37,6 +41,10 @@
 	status = "okay";
 };
 
+&pwm3 {
+	status = "okay";
+};
+
 &reg_usb_h1_vbus {
 	status = "okay";
 };

arch/arm/boot/dts/nxp/imx/imx6dl-yapp43-common.dtsi

@@ -26,6 +26,12 @@
 		status = "disabled";
 	};
 
+	beeper: beeper {
+		compatible = "pwm-beeper";
+		pwms = <&pwm3 0 500000 0>;
+		status = "disabled";
+	};
+
 	gpio_keys: gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";
@@ -466,6 +472,13 @@
 		>;
 	};
 
+	pinctrl_sound: soundgrp {
+		fsl,pins = <
+			MX6QDL_PAD_SD1_DAT0__GPIO1_IO16	0x1b0b0
+			MX6QDL_PAD_SD1_DAT1__PWM3_OUT	0x8
+		>;
+	};
+
 	pinctrl_touch: touchgrp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_19__GPIO4_IO05	0x1b098
@@ -551,6 +564,12 @@
 	status = "disabled";
 };
 
+&pwm3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sound>;
+	status = "disabled";
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;

arch/arm/boot/dts/nxp/imx/imx6q-yapp4-pegasus.dts

@@ -17,6 +17,10 @@
 	};
 };
 
+&beeper {
+	status = "okay";
+};
+
 &gpio_oled {
 	status = "okay";
 };
@@ -37,6 +41,10 @@
 	status = "okay";
 };
 
+&pwm3 {
+	status = "okay";
+};
+
 &reg_pu {
 	regulator-always-on;
 };

arch/arm/boot/dts/nxp/imx/imx6qp-yapp4-pegasus-plus.dts

@@ -17,6 +17,10 @@
 	};
 };
 
+&beeper {
+	status = "okay";
+};
+
 &gpio_oled {
 	status = "okay";
 };
@@ -37,6 +41,10 @@
 	status = "okay";
 };
 
+&pwm3 {
+	status = "okay";
+};
+
 &reg_pu {
 	regulator-always-on;
 };