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Date:   Thu, 30 May 2019 12:44:41 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Vijay Khemka <vijaykhemka@...com>
Cc:     Jean Delvare <jdelvare@...e.com>, Jonathan Corbet <corbet@....net>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "joel@....id.au" <joel@....id.au>,
        "linux-aspeed@...ts.ozlabs.org" <linux-aspeed@...ts.ozlabs.org>,
        Sai Dasari <sdasari@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 2/2] Docs: hwmon: pmbus: Add PXE1610 driver

On Thu, May 30, 2019 at 06:51:52PM +0000, Vijay Khemka wrote:
> 
> 
> ´╗┐On 5/29/19, 6:05 PM, "Guenter Roeck" <groeck7@...il.com on behalf of linux@...ck-us.net> wrote:
> 
>     On 5/29/19 3:35 PM, Vijay Khemka wrote:
>     > Added support for Infenion PXE1610 driver
>     > 
>     > Signed-off-by: Vijay Khemka <vijaykhemka@...com>
>     > ---
>     >   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@...com>
>     > +
>     > +
>     > +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.

>     > +
>     > +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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