Re: [PATCH 2/2] Docs: hwmon: pmbus: Add PXE1610 driver

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On 5/30/19, 12:45 PM, "Guenter Roeck" <groeck7@xxxxxxxxx on behalf of linux@xxxxxxxxxxxx> wrote:

    On Thu, May 30, 2019 at 06:51:52PM +0000, Vijay Khemka wrote:
    > 
    > 
    > On 5/29/19, 6:05 PM, "Guenter Roeck" <groeck7@xxxxxxxxx on behalf of linux@xxxxxxxxxxxx> wrote:
    > 
    >     On 5/29/19 3:35 PM, Vijay Khemka wrote:
    >     > Added support for Infenion PXE1610 driver
    >     > 
    >     > Signed-off-by: Vijay Khemka <vijaykhemka@xxxxxx>
    >     > ---
    >     >   Documentation/hwmon/pxe1610 | 84 +++++++++++++++++++++++++++++++++++++
    >     >   1 file changed, 84 insertions(+)
    >     >   create mode 100644 Documentation/hwmon/pxe1610
    >     > 
    >     > diff --git a/Documentation/hwmon/pxe1610 b/Documentation/hwmon/pxe1610
    >     > new file mode 100644
    >     > index 000000000000..b5c83edf027a
    >     > --- /dev/null
    >     > +++ b/Documentation/hwmon/pxe1610
    >     > @@ -0,0 +1,84 @@
    >     > +Kernel driver pxe1610
    >     > +=====================
    >     > +
    >     > +Supported chips:
    >     > +  * Infinion PXE1610
    >     > +    Prefix: 'pxe1610'
    >     > +    Addresses scanned: -
    >     > +    Datasheet: Datasheet is not publicly available.
    >     > +
    >     > +  * Infinion PXE1110
    >     > +    Prefix: 'pxe1110'
    >     > +    Addresses scanned: -
    >     > +    Datasheet: Datasheet is not publicly available.
    >     > +
    >     > +  * Infinion PXM1310
    >     > +    Prefix: 'pxm1310'
    >     > +    Addresses scanned: -
    >     > +    Datasheet: Datasheet is not publicly available.
    >     > +
    >     > +Author: Vijay Khemka <vijaykhemka@xxxxxx>
    >     > +
    >     > +
    >     > +Description
    >     > +-----------
    >     > +
    >     > +PXE1610 is a Multi-rail/Multiphase Digital Controllers and
    >     > +it is compliant to Intel VR13 DC-DC converter specifications.
    >     > +
    >     
    >     And the others ?
    > This supports VR12 as well and I don't see this controller supports any other VR versions.
    >     
    The point here is that there is no description of the other controllers.
Ok, I get it, mainly all 3 controllers are from same family of Infineon controller but I will add details here.
    
    >     > +
    >     > +Usage Notes
    >     > +-----------
    >     > +
    >     > +This driver can be enabled with kernel config CONFIG_SENSORS_PXE1610
    >     > +set to 'y' or 'm'(for module).
    >     > +
    >     The above does not really add value.
    > Ok, I will remove it.
    >     
    >     > +This driver does not probe for PMBus devices. You will have
    >     > +to instantiate devices explicitly.
    >     > +
    >     > +Example: the following commands will load the driver for an PXE1610
    >     > +at address 0x70 on I2C bus #4:
    >     > +
    >     > +# modprobe pxe1610
    >     > +# echo pxe1610 0x70 > /sys/bus/i2c/devices/i2c-4/new_device
    >     > +
    >     > +It can also be instantiated by declaring in device tree if it is
    >     > +built as a kernel not as a module.
    >     > +
    >     
    >     I assume you mean "built into the kernel".
    >     Why would devicetree based instantiation not work if the driver is built
    >     as module ?
    > Will correct statement here.
    >     
    >     > +
    >     > +Sysfs attributes
    >     > +----------------
    >     > +
    >     > +curr1_label		"iin"
    >     > +curr1_input		Measured input current
    >     > +curr1_alarm		Current high alarm
    >     > +
    >     > +curr[2-4]_label		"iout[1-3]"
    >     > +curr[2-4]_input		Measured output current
    >     > +curr[2-4]_crit		Critical maximum current
    >     > +curr[2-4]_crit_alarm	Current critical high alarm
    >     > +
    >     > +in1_label		"vin"
    >     > +in1_input		Measured input voltage
    >     > +in1_crit		Critical maximum input voltage
    >     > +in1_crit_alarm		Input voltage critical high alarm
    >     > +
    >     > +in[2-4]_label		"vout[1-3]"
    >     > +in[2-4]_input		Measured output voltage
    >     > +in[2-4]_lcrit		Critical minimum output voltage
    >     > +in[2-4]_lcrit_alarm	Output voltage critical low alarm
    >     > +in[2-4]_crit		Critical maximum output voltage
    >     > +in[2-4]_crit_alarm	Output voltage critical high alarm
    >     > +
    >     > +power1_label		"pin"
    >     > +power1_input		Measured input power
    >     > +power1_alarm		Input power high alarm
    >     > +
    >     > +power[2-4]_label	"pout[1-3]"
    >     > +power[2-4]_input	Measured output power
    >     > +
    >     > +temp[1-3]_input		Measured temperature
    >     > +temp[1-3]_crit		Critical high temperature
    >     > +temp[1-3]_crit_alarm	Chip temperature critical high alarm
    >     > +temp[1-3]_max		Maximum temperature
    >     > +temp[1-3]_max_alarm	Chip temperature high alarm
    >     > 
    >     
    >     
    > 
    





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