[PATCH 2/4] arm64: dts: st: ensure IMX335 is enabled on stm32mp257f-ev1

[Alain Volmat <alain.volmat@foss.st.com>]

Set the GPIO enable line for the IMX335 camera via a GPIO hog
in order to ensure it is well enabled.

Use scmi_v3v3 for imx335 regulators.
The 3 imx335 supplies are generated within the MB1854 and all come
from the v3v3 coming from the board.  Ensure that this regulator is
enabled by using the scmi_v3v3 as supplier of the imx335.

Signed-off-by: Hugues Fruchet <hugues.fruchet@foss.st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 40 ++++++++++--------------------
 1 file changed, 13 insertions(+), 27 deletions(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 12b4018edeb0..acc730146287 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -72,30 +72,6 @@ ddr_channel: sdram-channel-0 {
 		io-width = <32>;
 	};
 
-	imx335_2v9: regulator-2v9 {
-		compatible = "regulator-fixed";
-		regulator-name = "imx335-avdd";
-		regulator-min-microvolt = <2900000>;
-		regulator-max-microvolt = <2900000>;
-		regulator-always-on;
-	};
-
-	imx335_1v8: regulator-1v8 {
-		compatible = "regulator-fixed";
-		regulator-name = "imx335-ovdd";
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
-		regulator-always-on;
-	};
-
-	imx335_1v2: regulator-1v2 {
-		compatible = "regulator-fixed";
-		regulator-name = "imx335-dvdd";
-		regulator-min-microvolt = <1200000>;
-		regulator-max-microvolt = <1200000>;
-		regulator-always-on;
-	};
-
 	memory@80000000 {
 		device_type = "memory";
 		reg = <0x0 0x80000000 0x1 0x0>;
@@ -253,6 +229,16 @@ phy0_eth2: ethernet-phy@1 {
 	};
 };
 
+&gpioi {
+	/* Enable the IMX335 power line */
+	imx335-en-hog {
+		gpio-hog;
+		gpios = <0 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "imx335_en";
+	};
+};
+
 &i2c2 {
 	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&i2c2_pins_a>;
@@ -269,9 +255,9 @@ imx335: camera@1a {
 		compatible = "sony,imx335";
 		reg = <0x1a>;
 		clocks = <&clk_ext_camera>;
-		avdd-supply = <&imx335_2v9>;
-		ovdd-supply = <&imx335_1v8>;
-		dvdd-supply = <&imx335_1v2>;
+		avdd-supply = <&scmi_v3v3>;
+		ovdd-supply = <&scmi_v3v3>;
+		dvdd-supply = <&scmi_v3v3>;
 		reset-gpios = <&gpioi 7 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
 
 		port {

-- 
2.34.1