diff options
| author | Ashish Yadav <ashish.yadav@infineon.com> | 2026-02-23 08:08:03 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-03-31 05:45:05 +0300 |
| commit | 969a4ec86ca5fbd9952d5262b5a63ff434ccd63b (patch) | |
| tree | 21c9f2154433fb2a593cf3e96c17f190c088e482 | |
| parent | 4c9d861b423b488312327728532b7ea7a2b8fb5c (diff) | |
| download | linux-969a4ec86ca5fbd9952d5262b5a63ff434ccd63b.tar.xz | |
hwmon: (pmbus/core) Add support for NVIDIA nvidia195mv mode
Extend the PMBus core vrm_version handling to support NVIDIA nvidia195mv
VID mode. This adds a new VRM/VID encoding type and the corresponding
voltage conversion logic so devices reporting nvidia195mv can have their
VOUT/VID values interpreted correctly by the hwmon PMBus core.
Signed-off-by: Ashish Yadav <ashish.yadav@infineon.com>
Link: https://lore.kernel.org/r/20260223050804.4287-3-Ashish.Yadav@infineon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus.h | 2 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index d2e9bfb5320f..3ddcb742d289 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -416,7 +416,7 @@ enum pmbus_sensor_classes { #define PMBUS_PAGE_VIRTUAL BIT(31) /* Page is virtual */ enum pmbus_data_format { linear = 0, ieee754, direct, vid }; -enum vrm_version { vr11 = 0, vr12, vr13, imvp9, amd625mv }; +enum vrm_version { vr11 = 0, vr12, vr13, imvp9, amd625mv, nvidia195mv }; /* PMBus revision identifiers */ #define PMBUS_REV_10 0x00 /* PMBus revision 1.0 */ diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 572be3ebc03d..7d73abecc050 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -891,6 +891,10 @@ static s64 pmbus_reg2data_vid(struct pmbus_data *data, if (val >= 0x0 && val <= 0xd8) rv = DIV_ROUND_CLOSEST(155000 - val * 625, 100); break; + case nvidia195mv: + if (val >= 0x01) + rv = 195 + (val - 1) * 5; /* VID step is 5mv */ + break; } return rv; } |