[C43] add PCIe M.2 Key {E,B} W_DISABLE# support

arch/arm64/boot/dts/seco/seco-imx8qm-c43.dts

@@ -259,6 +259,76 @@
 			regulator-boot-on;
 			regulator-always-on;
 		};
+
+		/* PCIEA */
+		m2_keyb_w_dis1n: m2_keyb_w_dis1n {
+			compatible = "regulator-fixed";
+			regulator-name = "m2_keyb_w_dis1n";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			enable-active-high;
+			gpio = <&lsio_gpio0 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		m2_keyb_w_dis1n_consumer: M2_KEYB_W_DIS1N {
+			compatible          = "reg-userspace-consumer";
+			regulator-name      = "M2_KEYB_W_DIS1#";
+			regulator-supplies  = "m2_keyb_w_dis1n";
+			m2_keyb_w_dis1n-supply = <&m2_keyb_w_dis1n>;
+			regulator-boot-on;
+		};
+
+		m2_keyb_w_dis2n: m2_keyb_w_dis2n {
+			compatible = "regulator-fixed";
+			regulator-name = "m2_keyb_w_dis2n";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			enable-active-high;
+			gpio = <&lsio_gpio0 4 GPIO_ACTIVE_HIGH>;
+		};
+
+		m2_keyb_w_dis2n_consumer: M2_KEYB_W_DIS2N {
+			compatible          = "reg-userspace-consumer";
+			regulator-name      = "M2_KEYB_W_DIS2#";
+			regulator-supplies  = "m2_keyb_w_dis2n";
+			m2_keyb_w_dis2n-supply = <&m2_keyb_w_dis2n>;
+			regulator-boot-on;
+		};
+
+		/* PCIEB */
+		m2_keye_w_dis1n: m2_keye_w_dis1n {
+			compatible = "regulator-fixed";
+			regulator-name = "m2_keye_w_dis1n";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			enable-active-high;
+			gpio = <&lsio_gpio0 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		m2_keye_w_dis1n_consumer: M2_KEYE_W_DIS1N {
+			compatible          = "reg-userspace-consumer";
+			regulator-name      = "M2_KEYE_W_DIS1#";
+			regulator-supplies  = "m2_keye_w_dis1n";
+			m2_keye_w_dis1n-supply = <&m2_keye_w_dis1n>;
+			regulator-boot-on;
+		};
+
+		m2_keye_w_dis2n: m2_keye_w_dis2n {
+			compatible = "regulator-fixed";
+			regulator-name = "m2_keye_w_dis2n";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			enable-active-high;
+			gpio = <&lsio_gpio0 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		m2_keye_w_dis2n_consumer: M2_KEYE_W_DIS2N {
+			compatible          = "reg-userspace-consumer";
+			regulator-name      = "M2_KEYE_W_DIS2#";
+			regulator-supplies  = "m2_keye_w_dis2n";
+			m2_keye_w_dis2n-supply = <&m2_keye_w_dis2n>;
+			regulator-boot-on;
+		};
 	};
 
 	modem_reset: modem-reset {
@@ -854,7 +924,7 @@
 &pciea{
 	ext_osc = <1>;
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pciea>;
+	pinctrl-0 = <&pinctrl_pciea &pinctrl_pciea_w_dis>;
 	reset-gpio = <&lsio_gpio4 29 GPIO_ACTIVE_LOW>;
 	clkreq-gpio = <&lsio_gpio4 27 GPIO_ACTIVE_LOW>;
 	status = "okay";
@@ -863,7 +933,7 @@
 &pcieb{
 	ext_osc = <1>;
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pcieb>;
+	pinctrl-0 = <&pinctrl_pcieb &pinctrl_pcieb_w_dis>;
 	reset-gpio = <&lsio_gpio5 0 GPIO_ACTIVE_LOW>;
 	clkreq-gpio = <&lsio_gpio4 30 GPIO_ACTIVE_LOW>;
 	status = "okay";
@@ -1324,6 +1394,20 @@ ldb1_backlight: lvds_backlight@0 {
 		>;
 	};
 
+	pinctrl_pciea_w_dis: pcieawdisgrp {
+		fsl,pins = <
+			IMX8QM_SIM0_RST_LSIO_GPIO0_IO01	0x00000021 /* M2_KEYB_W_DIS1# */
+			IMX8QM_SIM0_POWER_EN_LSIO_GPIO0_IO04	0x00000021 /* M2_KEYB_W_DIS2# */
+		>;
+	};
+
+	pinctrl_pcieb_w_dis: pciebwdisgrp {
+		fsl,pins = <
+			IMX8QM_SIM0_CLK_LSIO_GPIO0_IO00	0x00000021 /* M2_KEYE_W_DIS1# */
+			IMX8QM_SIM0_IO_LSIO_GPIO0_IO02	0x00000021 /* M2_KEYE_W_DIS2# */
+		>;
+	};
+
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = <
 			IMX8QM_EMMC0_CLK_CONN_EMMC0_CLK			0x06000041