Kukjin Kim <kgene@xxxxxxxxxx> writes:
> On 01/14/15 09:03, Kevin Hilman wrote:
>> 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>
>> Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxx>
>> ---
>> 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..7874da20939f 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 */
>> + ina220@40 {
>> + compatible = "ti,ina230";
>> + reg = <0x40>;
>> + shunt-resistor = <10000>;
>> + };
>> +
>> + /* memory: VDD_MEM */
>> + ina220@41 {
>> + compatible = "ti,ina230";
>> + reg = <0x41>;
>> + shunt-resistor = <10000>;
>> + };
>> +
>> + /* GPU: VDD_G3D */
>> + ina220@44 {
>> + compatible = "ti,ina230";
>> + reg = <0x44>;
>> + shunt-resistor = <10000>;
>> + };
>> +
>> + /* A7 cluster: VDD_KFC */
>> + ina220@45 {
>> + compatible = "ti,ina230";
>> + reg = <0x45>;
>> + shunt-resistor = <10000>;
>> + };
>> + };
>> +
>> i2c_2: i2c@12C80000 {
>> samsung,i2c-sda-delay = <100>;
>> samsung,i2c-max-bus-freq = <66000>;
>
> Looks good to me and applied. To be honest, I'm not sure about the
> values in the node of shunt-resistor though ;)
I didn't measure the values, but used the values from the DTS that's
part of the hardkernel tree.
Kevin
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