443830f6fd
Add support for Ericsson BMR450, BMR451, BMR462, BMR463, and BMR464, which are based on ZL2005 and ZL2008, to zl6100 driver. Remove BMR450 and BMR451 device IDs from generic PMBus driver. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
141 lines
4.7 KiB
Plaintext
141 lines
4.7 KiB
Plaintext
Kernel driver zl6100
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====================
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Supported chips:
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* Intersil / Zilker Labs ZL2004
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Prefix: 'zl2004'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6847.pdf
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* Intersil / Zilker Labs ZL2005
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Prefix: 'zl2005'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6848.pdf
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* Intersil / Zilker Labs ZL2006
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Prefix: 'zl2006'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6850.pdf
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* Intersil / Zilker Labs ZL2008
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Prefix: 'zl2008'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6859.pdf
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* Intersil / Zilker Labs ZL2105
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Prefix: 'zl2105'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6851.pdf
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* Intersil / Zilker Labs ZL2106
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Prefix: 'zl2106'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6852.pdf
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* Intersil / Zilker Labs ZL6100
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Prefix: 'zl6100'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6876.pdf
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* Intersil / Zilker Labs ZL6105
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Prefix: 'zl6105'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn6906.pdf
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* Ericsson BMR450, BMR451
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Prefix: 'bmr450', 'bmr451'
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Addresses scanned: -
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Datasheet:
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http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146401
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* Ericsson BMR462, BMR463, BMR464
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Prefixes: 'bmr462', 'bmr463', 'bmr464'
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Addresses scanned: -
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Datasheet:
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http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146256
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Author: Guenter Roeck <guenter.roeck@ericsson.com>
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Description
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-----------
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This driver supports hardware montoring for Intersil / Zilker Labs ZL6100 and
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compatible digital DC-DC controllers.
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The driver is a client driver to the core PMBus driver. Please see
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Documentation/hwmon/pmbus and Documentation.hwmon/pmbus-core for details
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on PMBus client drivers.
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Usage Notes
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-----------
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This driver does not auto-detect devices. You will have to instantiate the
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devices explicitly. Please see Documentation/i2c/instantiating-devices for
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details.
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WARNING: Do not access chip registers using the i2cdump command, and do not use
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any of the i2ctools commands on a command register used to save and restore
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configuration data (0x11, 0x12, 0x15, 0x16, and 0xf4). The chips supported by
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this driver interpret any access to those command registers (including read
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commands) as request to execute the command in question. Unless write accesses
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to those registers are protected, this may result in power loss, board resets,
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and/or Flash corruption. Worst case, your board may turn into a brick.
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Platform data support
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---------------------
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The driver supports standard PMBus driver platform data.
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Module parameters
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-----------------
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delay
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-----
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Some Intersil/Zilker Labs DC-DC controllers require a minimum interval between
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I2C bus accesses. According to Intersil, the minimum interval is 2 ms, though
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1 ms appears to be sufficient and has not caused any problems in testing.
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The problem is known to affect ZL6100, ZL2105, and ZL2008. It is known not to
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affect ZL2004 and ZL6105. The driver automatically sets the interval to 1 ms
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except for ZL2004 and ZL6105. To enable manual override, the driver provides a
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writeable module parameter, 'delay', which can be used to set the interval to
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a value between 0 and 65,535 microseconds.
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Sysfs entries
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-------------
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The following attributes are supported. Limits are read-write; all other
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attributes are read-only.
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in1_label "vin"
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in1_input Measured input voltage.
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in1_min Minimum input voltage.
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in1_max Maximum input voltage.
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in1_lcrit Critical minumum input voltage.
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in1_crit Critical maximum input voltage.
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in1_min_alarm Input voltage low alarm.
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in1_max_alarm Input voltage high alarm.
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in1_lcrit_alarm Input voltage critical low alarm.
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in1_crit_alarm Input voltage critical high alarm.
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in2_label "vout1"
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in2_input Measured output voltage.
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in2_lcrit Critical minumum output Voltage.
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in2_crit Critical maximum output voltage.
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in2_lcrit_alarm Critical output voltage critical low alarm.
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in2_crit_alarm Critical output voltage critical high alarm.
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curr1_label "iout1"
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curr1_input Measured output current.
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curr1_lcrit Critical minimum output current.
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curr1_crit Critical maximum output current.
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curr1_lcrit_alarm Output current critical low alarm.
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curr1_crit_alarm Output current critical high alarm.
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temp[12]_input Measured temperature.
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temp[12]_min Minimum temperature.
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temp[12]_max Maximum temperature.
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temp[12]_lcrit Critical low temperature.
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temp[12]_crit Critical high temperature.
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temp[12]_min_alarm Chip temperature low alarm.
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temp[12]_max_alarm Chip temperature high alarm.
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temp[12]_lcrit_alarm Chip temperature critical low alarm.
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temp[12]_crit_alarm Chip temperature critical high alarm.
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