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| author | Guenter Roeck <linux@roeck-us.net> | 2020-01-13 15:30:14 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2020-03-08 20:35:47 -0700 |
| commit | 16358542f32f47f372ad48e4cdf61ab245c9f49d (patch) | |
| tree | 3da8a97cf0425631b0231dfe24d3694ceb554179 /Documentation/hwmon | |
| parent | 43f33b6e59c229ca82df4f56154d50fbea3ecc80 (diff) | |
| download | linux-16358542f32f47f372ad48e4cdf61ab245c9f49d.tar.bz2 | |
hwmon: (pmbus) Implement multi-phase support
Some PMBus chips support multiple phases, and report telemetry such
as input current, output current, or temperature for each phase.
Add support for such chips to the PMBus core.
Start with a maximum of 8 phases per page, and assume that supported
sensors per phase are similar for all pages. Only support per-phase
telemetry attributes, no limits or alarms.
As part of this patch, set the initial page variable to 0xff to ensure
that the page is updated when the first page command is issued. Also
only issue page commands if the chip supports more than one page.
Cc: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/pmbus.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/hwmon/pmbus.rst b/Documentation/hwmon/pmbus.rst index f787984e88a9..2658ddee70eb 100644 --- a/Documentation/hwmon/pmbus.rst +++ b/Documentation/hwmon/pmbus.rst @@ -227,7 +227,9 @@ currX_lcrit_alarm Output current critical low alarm. From IOUT_UC_FAULT status. currX_crit_alarm Current critical high alarm. From IIN_OC_FAULT or IOUT_OC_FAULT status. -currX_label "iin" or "ioutY" +currX_label "iin", "iinY", "iinY.Z", "ioutY", or "ioutY.Z", + where Y reflects the page number and Z reflects the + phase. powerX_input Measured power. From READ_PIN or READ_POUT register. powerX_cap Output power cap. From POUT_MAX register. @@ -239,7 +241,9 @@ powerX_alarm Power high alarm. From PIN_OP_WARNING or POUT_OP_WARNING status. powerX_crit_alarm Output power critical high alarm. From POUT_OP_FAULT status. -powerX_label "pin" or "poutY" +powerX_label "pin", "pinY", "pinY.Z", "poutY", or "poutY.Z", + where Y reflects the page number and Z reflects the + phase. tempX_input Measured temperature. From READ_TEMPERATURE_X register. |