From: Kevin Hilman <khilman@xxxxxxxxxx>
The odroid-xu3 has 4 INA231 current sensors on board which can be
accessed from the Linux via the hwmon interface.
There is one sensor for each of these power rails:
- A15 cluster: VDD_ARM
- A7 cluster: VDD_KFC
- GPU: VDD_G3D
- memory: VDD_MEM
In addition to adding the sensors, LDO26 from the PMIC needs to be
enabled because it's powering these sensor.
Cc: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
Cc: Sjoerd Simons <sjoerd.simons@xxxxxxxxxxxxxxx>
Reviewed-By: Sjoerd Simons <sjoerd.simons@xxxxxxxxxxxxxxx>
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxx>
---
v3: extend existing i2c_0 node
v2: use "ti,ina231" as compatible string.
Applies on top of "ARM: dts: Add dts file for odroid XU3 board" from Sjoerd Simons.
arch/arm/boot/dts/exynos5422-odroidxu3.dts | 39 ++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
index c29123c0734d..38694a4a5417 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
@@ -174,6 +174,13 @@
regulator-always-on;
};
+ ldo26_reg: LDO26 {
+ regulator-name = "vdd_ldo26";
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-always-on;
+ };
+
buck1_reg: BUCK1 {
regulator-name = "vdd_mif";
regulator-min-microvolt = <800000>;
@@ -330,3 +337,35 @@
&usbdrd_dwc3_1 {
dr_mode = "otg";
};
+
+&i2c_0 {
+ status = "okay";
+
+ /* A15 cluster: VDD_ARM */
+ ina231@40 {
+ compatible = "ti,ina231";
+ reg = <0x40>;
+ shunt-resistor = <10000>;
+ };
+
+ /* memory: VDD_MEM */
+ ina231@41 {
+ compatible = "ti,ina231";
+ reg = <0x41>;
+ shunt-resistor = <10000>;
+ };
+
+ /* GPU: VDD_G3D */
+ ina231@44 {
+ compatible = "ti,ina231";
+ reg = <0x44>;
+ shunt-resistor = <10000>;
+ };
+
+ /* A7 cluster: VDD_KFC */
+ ina231@45 {
+ compatible = "ti,ina231";
+ reg = <0x45>;
+ shunt-resistor = <10000>;
+ };
+};
--
2.1.3
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