ARM: dts: exynos: Disable unused PMIC regulators on Exynos5422 Odroid boards

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>

diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
index 744fd86..b0dc9cc 100644 (file)
--- 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 96e281c..e522edb 100644 (file)
--- 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";
 };