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Diffstat (limited to 'Documentation/hwmon/mlxreg-fan')
| -rw-r--r-- | Documentation/hwmon/mlxreg-fan | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/Documentation/hwmon/mlxreg-fan b/Documentation/hwmon/mlxreg-fan deleted file mode 100644 index fc531c6978d4..000000000000 --- a/Documentation/hwmon/mlxreg-fan +++ /dev/null @@ -1,60 +0,0 @@ -Kernel driver mlxreg-fan -======================== - -Provides FAN control for the next Mellanox systems: -QMB700, equipped with 40x200GbE InfiniBand ports; -MSN3700, equipped with 32x200GbE or 16x400GbE Ethernet ports; -MSN3410, equipped with 6x400GbE plus 48x50GbE Ethernet ports; -MSN3800, equipped with 64x1000GbE Ethernet ports; -These are the Top of the Rack systems, equipped with Mellanox switch -board with Mellanox Quantum or Spectrume-2 devices. -FAN controller is implemented by the programmable device logic. - -The default registers offsets set within the programmable device is as -following: -- pwm1 0xe3 -- fan1 (tacho1) 0xe4 -- fan2 (tacho2) 0xe5 -- fan3 (tacho3) 0xe6 -- fan4 (tacho4) 0xe7 -- fan5 (tacho5) 0xe8 -- fan6 (tacho6) 0xe9 -- fan7 (tacho7) 0xea -- fan8 (tacho8) 0xeb -- fan9 (tacho9) 0xec -- fan10 (tacho10) 0xed -- fan11 (tacho11) 0xee -- fan12 (tacho12) 0xef -This setup can be re-programmed with other registers. - -Author: Vadim Pasternak <vadimp@mellanox.com> - -Description ------------ - -The driver implements a simple interface for driving a fan connected to -a PWM output and tachometer inputs. -This driver obtains PWM and tachometers registers location according to -the system configuration and creates FAN/PWM hwmon objects and a cooling -device. PWM and tachometers are sensed through the on-board programmable -device, which exports its register map. This device could be attached to -any bus type, for which register mapping is supported. -Single instance is created with one PWM control, up to 12 tachometers and -one cooling device. It could be as many instances as programmable device -supports. -The driver exposes the fan to the user space through the hwmon's and -thermal's sysfs interfaces. - -/sys files in hwmon subsystem ------------------------------ - -fan[1-12]_fault - RO files for tachometers TACH1-TACH12 fault indication -fan[1-12]_input - RO files for tachometers TACH1-TACH12 input (in RPM) -pwm1 - RW file for fan[1-12] target duty cycle (0..255) - -/sys files in thermal subsystem -------------------------------- - -cur_state - RW file for current cooling state of the cooling device - (0..max_state) -max_state - RO file for maximum cooling state of the cooling device |