| Message ID | 1506603015-27202-4-git-send-email-m.purski@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On Thu, 28 Sep 2017 14:50:14 +0200 Maciej Purski <m.purski@samsung.com> wrote: > Add optional max expected current property which allows calibrating > the ina sensor in order to achieve requested precision. Document > the changes in Documentation/hwmon/ina2xx. > This is introducing new generic devicetree bindings.. I'm not totally sure we want to do this rather than having a manufacturer specific binding... I don't have a good feeling for how common this will be in other devices. If it's generic, then this isn't necessarily the place to define it. Jonathan > Signed-off-by: Maciej Purski <m.purski@samsung.com> > --- > Documentation/devicetree/bindings/hwmon/ina2xx.txt | 4 +++- > Documentation/hwmon/ina2xx | 9 +++++---- > 2 files changed, 8 insertions(+), 5 deletions(-) > > diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/Documentation/devicetree/bindings/hwmon/ina2xx.txt > index 02af0d9..25ba372 100644 > --- a/Documentation/devicetree/bindings/hwmon/ina2xx.txt > +++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt > @@ -14,11 +14,13 @@ Optional properties: > > - shunt-resistor > Shunt resistor value in micro-Ohm > - > +- max-expected-current > + Max expected current value in mA > Example: > > ina220@44 { > compatible = "ti,ina220"; > reg = <0x44>; > shunt-resistor = <1000>; > + max-expected-current = <3000>; > }; > diff --git a/Documentation/hwmon/ina2xx b/Documentation/hwmon/ina2xx > index cfd31d9..e9ca838 100644 > --- a/Documentation/hwmon/ina2xx > +++ b/Documentation/hwmon/ina2xx > @@ -51,10 +51,11 @@ INA230 and INA231 are high or low side current shunt and power monitors > with an I2C interface. The chips monitor both a shunt voltage drop and > bus supply voltage. > > -The shunt value in micro-ohms can be set via platform data or device tree at > -compile-time or via the shunt_resistor attribute in sysfs at run-time. Please > -refer to the Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings > -if the device tree is used. > +The shunt value in micro-ohms and max expected current in mA can be set > +via platform data or device tree at compile-time or via the shunt_resistor > +and max_expected_current attributes in sysfs at run-time. Please refer to the > +Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings if the > +device tree is used. > > Additionally ina226 supports update_interval attribute as described in > Documentation/hwmon/sysfs-interface. Internally the interval is the sum of -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 10/01/2017 12:31 PM, Jonathan Cameron wrote: > On Thu, 28 Sep 2017 14:50:14 +0200 > Maciej Purski <m.purski@samsung.com> wrote: > >> Add optional max expected current property which allows calibrating >> the ina sensor in order to achieve requested precision. Document >> the changes in Documentation/hwmon/ina2xx. >> > > This is introducing new generic devicetree bindings.. > I'm not totally sure we want to do this rather than having a > manufacturer specific binding... I don't have a good feeling for > how common this will be in other devices. > > If it's generic, then this isn't necessarily the place to define it. > > Jonathan > I agree, this should be manufacturer-specific property. Thanks. >> Signed-off-by: Maciej Purski <m.purski@samsung.com> >> --- >> Documentation/devicetree/bindings/hwmon/ina2xx.txt | 4 +++- >> Documentation/hwmon/ina2xx | 9 +++++---- >> 2 files changed, 8 insertions(+), 5 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/Documentation/devicetree/bindings/hwmon/ina2xx.txt >> index 02af0d9..25ba372 100644 >> --- a/Documentation/devicetree/bindings/hwmon/ina2xx.txt >> +++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt >> @@ -14,11 +14,13 @@ Optional properties: >> >> - shunt-resistor >> Shunt resistor value in micro-Ohm >> - >> +- max-expected-current >> + Max expected current value in mA >> Example: >> >> ina220@44 { >> compatible = "ti,ina220"; >> reg = <0x44>; >> shunt-resistor = <1000>; >> + max-expected-current = <3000>; >> }; >> diff --git a/Documentation/hwmon/ina2xx b/Documentation/hwmon/ina2xx >> index cfd31d9..e9ca838 100644 >> --- a/Documentation/hwmon/ina2xx >> +++ b/Documentation/hwmon/ina2xx >> @@ -51,10 +51,11 @@ INA230 and INA231 are high or low side current shunt and power monitors >> with an I2C interface. The chips monitor both a shunt voltage drop and >> bus supply voltage. >> >> -The shunt value in micro-ohms can be set via platform data or device tree at >> -compile-time or via the shunt_resistor attribute in sysfs at run-time. Please >> -refer to the Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings >> -if the device tree is used. >> +The shunt value in micro-ohms and max expected current in mA can be set >> +via platform data or device tree at compile-time or via the shunt_resistor >> +and max_expected_current attributes in sysfs at run-time. Please refer to the >> +Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings if the >> +device tree is used. >> >> Additionally ina226 supports update_interval attribute as described in >> Documentation/hwmon/sysfs-interface. Internally the interval is the sum of > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Oct 05, 2017 at 05:15:07PM +0200, Maciej Purski wrote: > On 10/01/2017 12:31 PM, Jonathan Cameron wrote: > > On Thu, 28 Sep 2017 14:50:14 +0200 > > Maciej Purski <m.purski@samsung.com> wrote: > > > > > Add optional max expected current property which allows calibrating > > > the ina sensor in order to achieve requested precision. Document > > > the changes in Documentation/hwmon/ina2xx. > > > > > > > This is introducing new generic devicetree bindings.. > > I'm not totally sure we want to do this rather than having a > > manufacturer specific binding... I don't have a good feeling for > > how common this will be in other devices. > > > > If it's generic, then this isn't necessarily the place to define it. > > > > Jonathan > > > > I agree, this should be manufacturer-specific property. Thanks. > > > > Signed-off-by: Maciej Purski <m.purski@samsung.com> > > > --- > > > Documentation/devicetree/bindings/hwmon/ina2xx.txt | 4 +++- > > > Documentation/hwmon/ina2xx | 9 +++++---- > > > 2 files changed, 8 insertions(+), 5 deletions(-) > > > > > > diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/Documentation/devicetree/bindings/hwmon/ina2xx.txt > > > index 02af0d9..25ba372 100644 > > > --- a/Documentation/devicetree/bindings/hwmon/ina2xx.txt > > > +++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt > > > @@ -14,11 +14,13 @@ Optional properties: > > > - shunt-resistor > > > Shunt resistor value in micro-Ohm > > > - > > > +- max-expected-current > > > + Max expected current value in mA Also needs a unit suffix as defined in property-units.txt. > > > Example: > > > ina220@44 { > > > compatible = "ti,ina220"; > > > reg = <0x44>; > > > shunt-resistor = <1000>; > > > + max-expected-current = <3000>; > > > }; > > > diff --git a/Documentation/hwmon/ina2xx b/Documentation/hwmon/ina2xx > > > index cfd31d9..e9ca838 100644 > > > --- a/Documentation/hwmon/ina2xx > > > +++ b/Documentation/hwmon/ina2xx > > > @@ -51,10 +51,11 @@ INA230 and INA231 are high or low side current shunt and power monitors > > > with an I2C interface. The chips monitor both a shunt voltage drop and > > > bus supply voltage. > > > -The shunt value in micro-ohms can be set via platform data or device tree at > > > -compile-time or via the shunt_resistor attribute in sysfs at run-time. Please > > > -refer to the Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings > > > -if the device tree is used. > > > +The shunt value in micro-ohms and max expected current in mA can be set > > > +via platform data or device tree at compile-time or via the shunt_resistor > > > +and max_expected_current attributes in sysfs at run-time. Please refer to the > > > +Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings if the > > > +device tree is used. > > > Additionally ina226 supports update_interval attribute as described in > > > Documentation/hwmon/sysfs-interface. Internally the interval is the sum of > > > > > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/hwmon/ina2xx.txt b/Documentation/devicetree/bindings/hwmon/ina2xx.txt index 02af0d9..25ba372 100644 --- a/Documentation/devicetree/bindings/hwmon/ina2xx.txt +++ b/Documentation/devicetree/bindings/hwmon/ina2xx.txt @@ -14,11 +14,13 @@ Optional properties: - shunt-resistor Shunt resistor value in micro-Ohm - +- max-expected-current + Max expected current value in mA Example: ina220@44 { compatible = "ti,ina220"; reg = <0x44>; shunt-resistor = <1000>; + max-expected-current = <3000>; }; diff --git a/Documentation/hwmon/ina2xx b/Documentation/hwmon/ina2xx index cfd31d9..e9ca838 100644 --- a/Documentation/hwmon/ina2xx +++ b/Documentation/hwmon/ina2xx @@ -51,10 +51,11 @@ INA230 and INA231 are high or low side current shunt and power monitors with an I2C interface. The chips monitor both a shunt voltage drop and bus supply voltage. -The shunt value in micro-ohms can be set via platform data or device tree at -compile-time or via the shunt_resistor attribute in sysfs at run-time. Please -refer to the Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings -if the device tree is used. +The shunt value in micro-ohms and max expected current in mA can be set +via platform data or device tree at compile-time or via the shunt_resistor +and max_expected_current attributes in sysfs at run-time. Please refer to the +Documentation/devicetree/bindings/i2c/ina2xx.txt for bindings if the +device tree is used. Additionally ina226 supports update_interval attribute as described in Documentation/hwmon/sysfs-interface. Internally the interval is the sum of
Add optional max expected current property which allows calibrating the ina sensor in order to achieve requested precision. Document the changes in Documentation/hwmon/ina2xx. Signed-off-by: Maciej Purski <m.purski@samsung.com> --- Documentation/devicetree/bindings/hwmon/ina2xx.txt | 4 +++- Documentation/hwmon/ina2xx | 9 +++++---- 2 files changed, 8 insertions(+), 5 deletions(-)