From 7782d65c596131b9b34db913b2912e031b304864 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 6 Aug 2018 18:09:33 +0200 Subject: [PATCH] ARM: dts: exynos: Add LDO28 regulator on Exynos5422 Odroid boards The LDO28 is used only on Odroid XU3 for Display Port. Define it so DTS will describe entire hardware. Depending on bootloader behavior this might affect the Display Port because none of drivers are enabling it. By default it is off in S2MPS11 PMIC reset values. However it could be enabled by bootloader so in such case kernel will later disable it as unused regulator. Signed-off-by: Krzysztof Kozlowski Tested-by: Marek Szyprowski [backport of mainline commit 8be3e7f0785c2258479aab26c926ed9be6b9a799] Signed-off-by: Marek Szyprowski Change-Id: I646826a349ca66544cafcf7749a1b27416073017 --- arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 7 +++++++ arch/arm/boot/dts/exynos5422-odroidxu3.dts | 6 ++++++ 2 files changed, 13 insertions(+) diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi index 50f40c1..472502a 100644 --- a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi +++ b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi @@ -343,6 +343,13 @@ regulator-always-on; }; + ldo28_reg: LDO28 { + /* Used on XU3 */ + regulator-name = "vdd_ldo28"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <3950000>; + }; + ldo29_reg: LDO29 { /* Unused */ regulator-name = "vdd_ldo29"; diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts index 2df6af3..3d1541a 100644 --- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts +++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts @@ -52,6 +52,12 @@ }; }; +&ldo28_reg { + regulator-name = "dp_p3v3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; +}; + &pwm { /* * PWM 0 -- fan -- 2.7.4