1 Kernel driver lineage-pem 2 ========================= 3 4 Supported devices: 5 6 * Lineage Compact Power Line Power Entry Modules 7 8 Prefix: 'lineage-pem' 9 10 Addresses scanned: - 11 12 Documentation: 13 14 http://www.lineagepower.com/oem/pdf/CPLI2C.pdf 15 16 Author: Guenter Roeck <linux@roeck-us.net> 17 18 19 Description 20 ----------- 21 22 This driver supports various Lineage Compact Power Line DC/DC and AC/DC 23 converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others. 24 25 Lineage CPL power entry modules are nominally PMBus compliant. However, most 26 standard PMBus commands are not supported. Specifically, all hardware monitoring 27 and status reporting commands are non-standard. For this reason, a standard 28 PMBus driver can not be used. 29 30 31 Usage Notes 32 ----------- 33 34 This driver does not probe for Lineage CPL devices, since there is no register 35 which can be safely used to identify the chip. You will have to instantiate 36 the devices explicitly. 37 38 Example: the following will load the driver for a Lineage PEM at address 0x40 39 on I2C bus #1:: 40 41 $ modprobe lineage-pem 42 $ echo lineage-pem 0x40 > /sys/bus/i2c/devices/i2c-1/new_device 43 44 All Lineage CPL power entry modules have a built-in I2C bus master selector 45 (PCA9541). To ensure device access, this driver should only be used as client 46 driver to the pca9541 I2C master selector driver. 47 48 49 Sysfs entries 50 ------------- 51 52 All Lineage CPL devices report output voltage and device temperature as well as 53 alarms for output voltage, temperature, input voltage, input current, input power, 54 and fan status. 55 56 Input voltage, input current, input power, and fan speed measurement is only 57 supported on newer devices. The driver detects if those attributes are supported, 58 and only creates respective sysfs entries if they are. 59 60 ======================= =============================== 61 in1_input Output voltage (mV) 62 in1_min_alarm Output undervoltage alarm 63 in1_max_alarm Output overvoltage alarm 64 in1_crit Output voltage critical alarm 65 66 in2_input Input voltage (mV, optional) 67 in2_alarm Input voltage alarm 68 69 curr1_input Input current (mA, optional) 70 curr1_alarm Input overcurrent alarm 71 72 power1_input Input power (uW, optional) 73 power1_alarm Input power alarm 74 75 fan1_input Fan 1 speed (rpm, optional) 76 fan2_input Fan 2 speed (rpm, optional) 77 fan3_input Fan 3 speed (rpm, optional) 78 79 temp1_input 80 temp1_max 81 temp1_crit 82 temp1_alarm 83 temp1_crit_alarm 84 temp1_fault 85 ======================= ===============================
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