[PATCH 2/3] ARM: dts: stm32: Add backlight and panel supply on DHCOM SoM

[Marek Vasut]

Fix the following dtbs_check warning:
arch/arm/boot/dts/stm32mp157c-dhcom-pdk2.dt.yaml: display-bl: 'power-supply' is a required property
arch/arm/boot/dts/stm32mp157c-dhcom-pdk2.dt.yaml: panel: 'power-supply' is a required property

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
Cc: Patrice Chotard <patrice.chotard at foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
Cc: kernel at dh-electronics.com
Cc: linux-stm32 at st-md-mailman.stormreply.com
To: linux-arm-kernel at lists.infradead.org
---
 arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi
index d9316701fd03..4f6b94f10f4a 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcom-pdk2.dtsi
@@ -29,6 +29,7 @@ display_bl: display-bl {
 		brightness-levels = <0 16 22 30 40 55 75 102 138 188 255>;
 		default-brightness-level = <8>;
 		enable-gpios = <&gpioi 0 GPIO_ACTIVE_HIGH>;
+		power-supply = <&reg_panel_bl>;
 		status = "okay";
 	};
 
@@ -106,6 +107,7 @@ led-3 {
 	panel {
 		compatible = "edt,etm0700g0edh6";
 		backlight = <&display_bl>;
+		power-supply = <&reg_panel_bl>;
 
 		port {
 			lcd_panel_in: endpoint {
@@ -114,6 +116,21 @@ lcd_panel_in: endpoint {
 		};
 	};
 
+	reg_panel_bl: regulator-panel-bl {
+		compatible = "regulator-fixed";
+		regulator-name = "panel_backlight";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&reg_panel_supply>;
+	};
+
+	reg_panel_supply: regulator-panel-supply {
+		compatible = "regulator-fixed";
+		regulator-name = "panel_supply";
+		regulator-min-microvolt = <24000000>;
+		regulator-max-microvolt = <24000000>;
+	};
+
 	sound {
 		compatible = "audio-graph-card";
 		routing =
-- 
2.30.2