linux-kernel - [PATCH] arm64: dts: mt8183-kukui: clean up regulator tree

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Date: Tue, 25 Jun 2024 17:54:38 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: mt8183-kukui: clean up regulator tree

Some regulators in the kukui device tree are modeled incorrectly. Some
are missing supplies and some switches are incorrectly modeled as
voltage regulators. A pass-through was incorrectly modeled as a
regulator.

Add supplies where missing, remove voltage constraints for "switches",
and drop the "bl_pp5000" pass-through.

This depends on commit 2a99858c172e ("arm64: dts: mediatek: mt8183-kukui:
Add PMIC regulator supplies") for reg_vsys.

Fixes: cd894e274b74 ("arm64: dts: mt8183: Add krane-sku176 board")
Fixes: f15722c0fef0 ("arm64: dts: mt8183: Add pwm and backlight node")
Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
---
 .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 22 +++++--------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index 64b3389028e9..57d962e94af7 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -24,7 +24,7 @@ chosen {
 	backlight_lcd0: backlight_lcd0 {
 		compatible = "pwm-backlight";
 		pwms = <&pwm0 0 500000>;
-		power-supply = <&bl_pp5000>;
+		power-supply = <&reg_vsys>;
 		enable-gpios = <&pio 176 0>;
 		brightness-levels = <0 1023>;
 		num-interpolated-steps = <1023>;
@@ -47,10 +47,9 @@ clk32k: oscillator1 {
 	it6505_pp18_reg: regulator0 {
 		compatible = "regulator-fixed";
 		regulator-name = "it6505_pp18";
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
 		gpio = <&pio 178 0>;
 		enable-active-high;
+		vin-supply = <&pp1800_alw>;
 	};
 
 	lcd_pp3300: regulator1 {
@@ -62,27 +61,16 @@ lcd_pp3300: regulator1 {
 		regulator-boot-on;
 	};
 
-	bl_pp5000: regulator2 {
-		compatible = "regulator-fixed";
-		regulator-name = "bl_pp5000";
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-		regulator-always-on;
-		regulator-boot-on;
-	};
-
 	mmc1_fixed_power: regulator3 {
 		compatible = "regulator-fixed";
 		regulator-name = "mmc1_power";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
+		vin-supply = <&pp3300_alw>;
 	};
 
 	mmc1_fixed_io: regulator4 {
 		compatible = "regulator-fixed";
 		regulator-name = "mmc1_io";
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
+		vin-supply = <&pp1800_alw>;
 	};
 
 	pp1800_alw: regulator5 {
@@ -92,6 +80,7 @@ pp1800_alw: regulator5 {
 		regulator-boot-on;
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <1800000>;
+		vin-supply = <&reg_vsys>;
 	};
 
 	pp3300_alw: regulator6 {
@@ -101,6 +90,7 @@ pp3300_alw: regulator6 {
 		regulator-boot-on;
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
+		vin-supply = <&reg_vsys>;
 	};
 
 	/* system wide semi-regulated power rail from charger */
-- 
2.45.2.741.gdbec12cfda-goog