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85 lines
2.4 KiB
85 lines
2.4 KiB
Kernel driver lineage-pem |
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Supported devices: |
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* Lineage Compact Power Line Power Entry Modules |
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Prefix: 'lineage-pem' |
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Addresses scanned: - |
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Documentation: |
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http://www.lineagepower.com/oem/pdf/CPLI2C.pdf |
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Author: Guenter Roeck <[email protected]> |
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Description |
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----------- |
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This driver supports various Lineage Compact Power Line DC/DC and AC/DC |
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converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others. |
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Lineage CPL power entry modules are nominally PMBus compliant. However, most |
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standard PMBus commands are not supported. Specifically, all hardware monitoring |
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and status reporting commands are non-standard. For this reason, a standard |
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PMBus driver can not be used. |
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Usage Notes |
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----------- |
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This driver does not probe for Lineage CPL devices, since there is no register |
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which can be safely used to identify the chip. You will have to instantiate |
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the devices explicitly. |
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Example: the following will load the driver for a Lineage PEM at address 0x40 |
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on I2C bus #1:: |
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$ modprobe lineage-pem |
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$ echo lineage-pem 0x40 > /sys/bus/i2c/devices/i2c-1/new_device |
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All Lineage CPL power entry modules have a built-in I2C bus master selector |
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(PCA9541). To ensure device access, this driver should only be used as client |
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driver to the pca9541 I2C master selector driver. |
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Sysfs entries |
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------------- |
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All Lineage CPL devices report output voltage and device temperature as well as |
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alarms for output voltage, temperature, input voltage, input current, input power, |
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and fan status. |
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Input voltage, input current, input power, and fan speed measurement is only |
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supported on newer devices. The driver detects if those attributes are supported, |
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and only creates respective sysfs entries if they are. |
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======================= =============================== |
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in1_input Output voltage (mV) |
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in1_min_alarm Output undervoltage alarm |
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in1_max_alarm Output overvoltage alarm |
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in1_crit Output voltage critical alarm |
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in2_input Input voltage (mV, optional) |
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in2_alarm Input voltage alarm |
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curr1_input Input current (mA, optional) |
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curr1_alarm Input overcurrent alarm |
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power1_input Input power (uW, optional) |
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power1_alarm Input power alarm |
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fan1_input Fan 1 speed (rpm, optional) |
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fan2_input Fan 2 speed (rpm, optional) |
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fan3_input Fan 3 speed (rpm, optional) |
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temp1_input |
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temp1_max |
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temp1_crit |
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temp1_alarm |
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temp1_crit_alarm |
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temp1_fault |
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======================= ===============================
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