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-rw-r--r--Documentation/hwmon/mlxreg-fan60
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
+================= == ====================================================