arm64: dts: freescale: debix-som-a-bmb-08: Add CSI Power Regulators

Provide the 1.8 and 3.3 volt regulators that are utilised on the Debix
SOM BMB-08 base board.

Facilitate this by also supplying the pin control used to enable the
regulators on the second MIPI CSI port.
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts

@@ -63,6 +63,50 @@ regulator-som-vdd3v3 {
 		regulator-always-on;
 	};
 
+	reg_csi1_1v8: regulator-csi1-vdd1v8 {
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-name = "CSI1_VDD1V8";
+		gpio = <&expander0 13 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&reg_baseboard_vdd3v3>;
+	};
+
+	reg_csi1_3v3: regulator-csi1-vdd3v3 {
+		compatible = "regulator-fixed";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "CSI1_VDD3V3";
+		gpio = <&expander0 14 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&reg_vdd5v0>;
+	};
+
+	reg_csi2_1v8: regulator-csi2-vdd1v8 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_csi2_1v8>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-name = "CSI2_VDD1V8";
+		gpio = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&reg_baseboard_vdd3v3>;
+	};
+
+	reg_csi2_3v3: regulator-csi2-vdd3v3 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_csi2_3v3>;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "CSI2_VDD3V3";
+		gpio = <&gpio4 25 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&reg_vdd5v0>;
+	};
+
 	regulator-vbus-usb20 {
 		compatible = "regulator-fixed";
 		regulator-min-microvolt = <5000000>;
@@ -413,6 +457,18 @@ MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03		0x41
 		>;
 	};
 
+	pinctrl_reg_csi2_1v8: regcsi21v8grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI5_RXD0__GPIO3_IO21		0x19
+		>;
+	};
+
+	pinctrl_reg_csi2_3v3: regcsi23v3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_TXC__GPIO4_IO25		0x19
+		>;
+	};
+
 	pinctrl_uart2: uart2grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX		0x14f