linux-kernel - Re: [PATCH v2 3/3] Documentation: hwmon: Add POWER system power supply documentation

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Date:   Thu, 10 Aug 2017 18:19:39 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Eddie James <eajames@...ux.vnet.ibm.com>
Cc:     robh+dt@...nel.org, jdelvare@...e.com,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        joel@....id.au, jk@...abs.org, andrew@...id.au,
        mark.rutland@....com, devicetree@...r.kernel.org, corbet@....net,
        linux-doc@...r.kernel.org, "Edward A. James" <eajames@...ibm.com>
Subject: Re: [PATCH v2 3/3] Documentation: hwmon: Add POWER system power
 supply documentation

On Thu, Aug 10, 2017 at 05:19:46PM -0500, Eddie James wrote:
> From: "Edward A. James" <eajames@...ibm.com>
> 
> Signed-off-by: Edward A. James <eajames@...ibm.com>
> ---
>  Documentation/hwmon/powerps | 54 +++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/hwmon/powerps
> 
> diff --git a/Documentation/hwmon/powerps b/Documentation/hwmon/powerps
> new file mode 100644
> index 0000000..a4fbe92
> --- /dev/null
> +++ b/Documentation/hwmon/powerps
> @@ -0,0 +1,54 @@
> +Kernel driver powerps
> +=====================
> +
> +Supported chips:
> +  * POWER system power supply
> +
> +Author: Eddie James <eajames@...ibm.com>
> +
> +Description
> +-----------
> +
> +This driver supports POWER system power supplies. This driver is a client
> +to the core PMBus driver.
> +
> +Usage Notes
> +-----------
> +
> +This driver should auto-detect devices. In the event that it does not, you will

Not really, unless specified in devicetree or by other means in the kernel.
But the _driver_ won't do it. pmbus drivers don't have detect functions.

> +have to instantiate the devices explicitly. Please see
> +Documentation/i2c/instantiating-devices for details.
> +
> +Sysfs entries
> +-------------
> +
> +The following attributes are supported:
> +
> +curr1_alarm		Output current over-current fault.
> +curr1_input		Measured output current in mA.
> +curr1_label		"iout1"
> +
> +fan1_alarm		Fan 1 warning.
> +fan1_fault		Fan 1 fault.
> +fan1_input		Fan 1 speed in RPM.
> +fan2_alarm		Fan 2 warning.
> +fan2_fault		Fan 2 fault.
> +fan2_input		Fan 2 speed in RPM.
> +
> +in1_alarm		Input voltage under-voltage fault.
> +in1_input		Measured input voltage in mV.
> +in1_label		"vin"
> +in2_alarm		Output voltage over-voltage fault.
> +in2_input		Measured output voltage in mV.
> +in2_label		"vout1"
> +
> +power1_alarm		Input fault.
> +power1_input		Measured input power in uW.
> +power1_label		"pin"
> +
> +temp1_alarm		PSU inlet ambient temperature over-temperature fault.
> +temp1_input		Measured PSU inlet ambient temp in millidegrees C.
> +temp2_alarm		Secondary rectifier temp over-temperature fault.
> +temp2_input		Measured secondary rectifier temp in millidegrees C.
> +temp3_alarm		ORing FET temperature over-temperature fault.
> +temp3_input		Measured ORing FET temperature in millidegrees C.
> -- 
> 1.8.3.1
>