diff options
| author | Nick Hawkins <nick.hawkins@hpe.com> | 2023-01-03 14:36:50 -0600 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2023-02-03 07:30:09 -0800 |
| commit | 90905f7c40910a68677ea452ecf0023f31d6b08f (patch) | |
| tree | 608b7ce5e618a89c6d19331196b4d32c80d31691 /Documentation/hwmon | |
| parent | 6d03bbff456befeccdd4d663177c4d6c75d0c4ff (diff) | |
hwmon: (gxp-fan-ctrl) Add GXP fan controller
The GXP SoC can support up to 16 fans through the interface provided by
the CPLD. The current support is limited to 8 fans. The fans speeds are
controlled via 8 different PWMs which can vary in value from 0-255. The
fans are also capable of reporting if they have failed to the CPLD which
in turn reports the status to the GXP SoC.
Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
Link: https://lore.kernel.org/r/20230103203654.59322-2-nick.hawkins@hpe.com
[groeck: Improved alignment of defined, added missing include linux/bits.h]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/gxp-fan-ctrl.rst | 28 | ||||
| -rw-r--r-- | Documentation/hwmon/index.rst | 1 |
2 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/hwmon/gxp-fan-ctrl.rst b/Documentation/hwmon/gxp-fan-ctrl.rst new file mode 100644 index 000000000000..ae3397e81c04 --- /dev/null +++ b/Documentation/hwmon/gxp-fan-ctrl.rst @@ -0,0 +1,28 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +Kernel driver gxp-fan-ctrl +========================== + +Supported chips: + + * HPE GXP SOC + +Author: Nick Hawkins <nick.hawkins@hpe.com> + + +Description +----------- + +gxp-fan-ctrl is a driver which provides fan control for the hpe gxp soc. +The driver allows the gathering of fan status and the use of fan +PWM control. + + +Sysfs attributes +---------------- + +======================= =========================================================== +pwm[0-7] Fan 0 to 7 respective PWM value (0-255) +fan[0-7]_fault Fan 0 to 7 respective fault status: 1 fail, 0 ok +fan[0-7]_enable Fan 0 to 7 respective enabled status: 1 enabled, 0 disabled +======================= =========================================================== diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index fe2cc6b73634..7b36b0897230 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -73,6 +73,7 @@ Hardware Monitoring Kernel Drivers g762 gsc-hwmon gl518sm + gxp-fan-ctrl hih6130 ibmaem ibm-cffps |