Re: [PATCH v3 2/3] Documentation/hwmon: add Delta E50SN12051 documentation

[Guenter Roeck <linux@roeck-us.net>]

On 4/29/26 23:16, Colin Huang via B4 Relay wrote:
> From: Colin Huang <u8813345@gmail.com>
> 
> Document the hardware monitoring support for the Delta E50SN12051
> device.
> 
> The documentation describes the supported sensors exposed via the
> hwmon subsystem, including voltage, current, and temperature measurements.
> 
> Signed-off-by: Colin Huang <u8813345@gmail.com>

For my reference:

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>   Documentation/hwmon/e50sn12051.rst | 81 ++++++++++++++++++++++++++++++++++++++
>   Documentation/hwmon/index.rst      |  1 +
>   2 files changed, 82 insertions(+)
> 
> diff --git a/Documentation/hwmon/e50sn12051.rst b/Documentation/hwmon/e50sn12051.rst
> new file mode 100644
> index 000000000000..cbbfa7895d82
> --- /dev/null
> +++ b/Documentation/hwmon/e50sn12051.rst
> @@ -0,0 +1,81 @@
> +.. SPDX-License-Identifier: GPL-2.0-or-later
> +
> +Kernel driver e50sn12051
> +========================
> +
> +Supported chips:
> +
> +  * Delta E50SN12051
> +
> +    Prefix: 'e50sn12051'
> +
> +    Addresses scanned: -
> +
> +    Datasheet:
> +
> +      Provided by Delta upon request and NDA
> +
> +Description
> +-----------
> +
> +E50SN12051 is a 600W non-isolated 1/8th brick DC-DC power module.
> +
> +This driver supports the E50SN12051 PMBus compliant monitor device.
> +
> +The device provides measurements for:
> +
> +* Input voltage
> +* Output current
> +* Output voltage
> +* Temperature
> +
> +The driver is based on the PMBus core and exposes standard hwmon
> +sysfs attributes.
> +
> +Sysfs attributes
> +----------------
> +
> +======================= =======================================================
> +curr1_label             "iout1"
> +curr1_crit              Critical maximum current.
> +                        From IOUT_OC_FAULT_LIMIT register.
> +curr1_crit_alarm        Current critical high alarm.
> +                        From IOUT_OC_FAULT status.
> +curr1_input             Measured current.
> +                        From READ_IOUT register.
> +curr1_max               Maximum current.
> +                        From IOUT_OC_WARN_LIMIT register.
> +curr1_max_alarm         Current high alarm.
> +                        From IOUT_OC_WARN_LIMIT status.
> +
> +in1_label               "vin"
> +in1_alarm               Input voltage alarm.
> +in1_input               Measured voltage.
> +                        From READ_VIN register.
> +
> +in2_label               "vout1"
> +in2_crit                Critical maximum voltage.
> +                        From VOUT_OV_FAULT_LIMIT register.
> +in2_crit_alarm          Voltage critical high alarm.
> +                        From VOLTAGE_OV_FAULT status.
> +in2_input               Measured voltage.
> +                        From READ_VOUT register.
> +in2_max                 Maximum voltage.
> +                        From VOUT_OV_WARN_LIMIT register.
> +in2_max_alarm           Voltage high alarm.
> +                        From VOLTAGE_OV_WARNING status.
> +
> +temp1_crit              Critical high temperature.
> +                        From OT_FAULT_LIMIT register.
> +temp1_crit_alarm        Module temperature critical high alarm.
> +                        Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT
> +                        if TEMP_OT_FAULT status is set.
> +temp1_input             Measured module's hot spot temperature.
> +                        From READ_TEMPERATURE_1 register.
> +temp1_max               Maximum temperature.
> +                        From OT_WARN_LIMIT register.
> +temp1_max_alarm         Module temperature high alarm.
> +                        Set by comparing READ_TEMPERATURE_1 with OT_WARN_LIMIT if
> +                        TEMP_OT_WARNING status is set.
> +======================= =======================================================
> +
> diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
> index 8b655e5d6b68..ba08655fc496 100644
> --- a/Documentation/hwmon/index.rst
> +++ b/Documentation/hwmon/index.rst
> @@ -68,6 +68,7 @@ Hardware Monitoring Kernel Drivers
>      drivetemp
>      ds1621
>      ds620
> +   e50sn12051
>      emc1403
>      emc2103
>      emc2305
>