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ARM: dts: exynos: Add LDO28 regulator on Exynos5422 Odroid boards

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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 <krzk@kernel.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
This commit is contained in:
Krzysztof Kozlowski 2018-08-06 18:09:33 +02:00
parent b5124e4507
commit 8be3e7f078
2 changed files with 13 additions and 0 deletions
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7
arch/arm/boot/dts/exynos5422-odroid-core.dtsi
View File

@ -331,6 +331,13 @@ ldo27_reg: LDO27 {
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";

6
arch/arm/boot/dts/exynos5422-odroidxu3.dts
View File

@ -49,6 +49,12 @@ ina231@45 {
};
};
&ldo28_reg {
regulator-name = "dp_p3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
&pwm {
/*
* PWM 0 -- fan