diff options
Diffstat (limited to 'Documentation/hwmon/mlxreg-fan')
| -rw-r--r-- | Documentation/hwmon/mlxreg-fan | 60 |
1 files changed, 35 insertions, 25 deletions
diff --git a/Documentation/hwmon/mlxreg-fan b/Documentation/hwmon/mlxreg-fan index fc531c6978d4..c92b8e885f7e 100644 --- a/Documentation/hwmon/mlxreg-fan +++ b/Documentation/hwmon/mlxreg-fan @@ -2,32 +2,38 @@ 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; + +- 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; + +Author: Vadim Pasternak <vadimp@mellanox.com> + 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> +======================= ==== +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. Description ----------- @@ -48,13 +54,17 @@ 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) +================= == =================================================== +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 +================= == ==================================================== +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 +================= == ==================================================== |