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Subject[PATCH 3/4] ARM: dts: exynos: Disable unused PMIC regulators on Exynos5422 Odroid boards
Date
Disable unused PMIC regulators on Exynos5422 Odroid boards to reduce
energy used. According to schematics:
1. LDO12, LDO16 and LDO24 are not connected,
2. LDO26 is not used on Odroid HC1.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 26 +++++++++++-----------
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 6 +++++
2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
index 744fd86a38ad..b0dc9cc81b94 100644
--- a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
@@ -223,10 +223,10 @@
};

ldo12_reg: LDO12 {
+ /* Unused */
regulator-name = "vdd_ldo12";
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- regulator-always-on;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <2375000>;
};

ldo13_reg: LDO13 {
@@ -250,10 +250,10 @@
};

ldo16_reg: LDO16 {
+ /* Unused */
regulator-name = "vdd_ldo16";
- regulator-min-microvolt = <2200000>;
- regulator-max-microvolt = <2200000>;
- regulator-always-on;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3950000>;
};

ldo17_reg: LDO17 {
@@ -304,10 +304,10 @@
};

ldo24_reg: LDO24 {
- regulator-name = "tsp_io";
- regulator-min-microvolt = <2800000>;
- regulator-max-microvolt = <2800000>;
- regulator-always-on;
+ /* Unused */
+ regulator-name = "vdd_ldo24";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3950000>;
};

ldo25_reg: LDO25 {
@@ -318,10 +318,10 @@
};

ldo26_reg: LDO26 {
+ /* Used on XU3, XU3-Lite and XU4 */
regulator-name = "vdd_ldo26";
- regulator-min-microvolt = <3000000>;
- regulator-max-microvolt = <3000000>;
- regulator-always-on;
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3950000>;
};

ldo27_reg: LDO27 {
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
index 96e281c0a118..e522edb2bb82 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
@@ -367,6 +367,12 @@
status = "okay";
};

+&ldo26_reg {
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-always-on;
+};
+
&mixer {
status = "okay";
};
--
2.14.1
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