diff options
| author | Tang Yuantian <yuantian.tang@freescale.com> | 2013-06-19 14:50:20 +0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2013-06-27 10:31:42 -0700 |
| commit | 31e7ad74f6044ffec112fd4975c07b797589d89c (patch) | |
| tree | 220cacb4384d156c3fc723ce043974aecc36e442 /Documentation | |
| parent | 87438c2c5483a7ab445c14a8855fd309ae79b4e6 (diff) | |
| download | op-kernel-dev-31e7ad74f6044ffec112fd4975c07b797589d89c.zip op-kernel-dev-31e7ad74f6044ffec112fd4975c07b797589d89c.tar.gz | |
hwmon: (ina2xx) Add device tree support to pass the shunt resistor
Adding another way that is device tree to pass the shunt resistor
value to driver except for platform data.
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
[Guenter Roeck: Added missing of.h include]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/ina2xx.txt | 22 | ||||
| -rw-r--r-- | Documentation/hwmon/ina2xx | 4 |
2 files changed, 25 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/i2c/ina2xx.txt b/Documentation/devicetree/bindings/i2c/ina2xx.txt new file mode 100644 index 0000000..a2ad85d --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/ina2xx.txt @@ -0,0 +1,22 @@ +ina2xx properties + +Required properties: +- compatible: Must be one of the following: + - "ti,ina219" for ina219 + - "ti,ina220" for ina220 + - "ti,ina226" for ina226 + - "ti,ina230" for ina230 +- reg: I2C address + +Optional properties: + +- shunt-resistor + Shunt resistor value in micro-Ohm + +Example: + +ina220@44 { + compatible = "ti,ina220"; + reg = <0x44>; + shunt-resistor = <1000>; +}; diff --git a/Documentation/hwmon/ina2xx b/Documentation/hwmon/ina2xx index 03444f9..4223c2d 100644 --- a/Documentation/hwmon/ina2xx +++ b/Documentation/hwmon/ina2xx @@ -44,4 +44,6 @@ The INA226 monitors both a shunt voltage drop and bus supply voltage. The INA230 is a high or low side current shunt and power monitor with an I2C interface. The INA230 monitors both a shunt voltage drop and bus supply voltage. -The shunt value in micro-ohms can be set via platform data. +The shunt value in micro-ohms can be set via platform data or device tree. +Please refer to the Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings +if the device tree is used. |
