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Subject[PATCH v3 3/3] Documentation: hwmon: Document the IBM CFF power supply
From: "Edward A. James" <>

Signed-off-by: Edward A. James <>
Documentation/hwmon/ibm-cffps | 54 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 Documentation/hwmon/ibm-cffps

diff --git a/Documentation/hwmon/ibm-cffps b/Documentation/hwmon/ibm-cffps
new file mode 100644
index 0000000..e091ff2
--- /dev/null
+++ b/Documentation/hwmon/ibm-cffps
@@ -0,0 +1,54 @@
+Kernel driver ibm-cffps
+Supported chips:
+ * IBM Common Form Factor power supply
+Author: Eddie James <>
+This driver supports IBM Common Form Factor (CFF) power supplies. This driver
+is a client to the core PMBus driver.
+Usage Notes
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices for
+Sysfs entries
+The following attributes are supported:
+curr1_alarm Output current over-current fault.
+curr1_input Measured output current in mA.
+curr1_label "iout1"
+fan1_alarm Fan 1 warning.
+fan1_fault Fan 1 fault.
+fan1_input Fan 1 speed in RPM.
+fan2_alarm Fan 2 warning.
+fan2_fault Fan 2 fault.
+fan2_input Fan 2 speed in RPM.
+in1_alarm Input voltage under-voltage fault.
+in1_input Measured input voltage in mV.
+in1_label "vin"
+in2_alarm Output voltage over-voltage fault.
+in2_input Measured output voltage in mV.
+in2_label "vout1"
+power1_alarm Input fault.
+power1_input Measured input power in uW.
+power1_label "pin"
+temp1_alarm PSU inlet ambient temperature over-temperature fault.
+temp1_input Measured PSU inlet ambient temp in millidegrees C.
+temp2_alarm Secondary rectifier temp over-temperature fault.
+temp2_input Measured secondary rectifier temp in millidegrees C.
+temp3_alarm ORing FET temperature over-temperature fault.
+temp3_input Measured ORing FET temperature in millidegrees C.
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