On Wed, 2015-01-14 at 17:08 -0800, Kevin Hilman wrote:
From: Kevin Hilman khilman@linaro.org
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.
I haven't tested whether the sensor values are correct, but based on the schematics & the hardkernel dts this describes the hardware correctly.
Reviewed-By: Sjoerd Simons sjoerd.simons@collabora.co.uk
Cc: Javier Martinez Canillas javier.martinez@collabora.co.uk Cc: Sjoerd Simons sjoerd.simons@collabora.co.uk Signed-off-by: Kevin Hilman khilman@linaro.org
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..50353d023225 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>;@@ -257,6 +264,38 @@ }; };
- i2c_0: i2c@12C60000 {
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>;};- };
- i2c_2: i2c@12C80000 { samsung,i2c-sda-delay = <100>; samsung,i2c-max-bus-freq = <66000>;