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ccf988b66d
Convert each file at I2C subsystem, renaming them to .rst and adding to the driver-api book. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
214 lines
5.6 KiB
ReStructuredText
214 lines
5.6 KiB
ReStructuredText
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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* Intersil / Zilker Labs ZL9101M
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Prefix: 'zl9101'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn7669.pdf
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* Intersil / Zilker Labs ZL9117M
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Prefix: 'zl9117'
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Addresses scanned: -
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Datasheet: http://www.intersil.com/data/fn/fn7914.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 <linux@roeck-us.net>
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Description
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-----------
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This driver supports hardware monitoring 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.rst 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.rst for
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details.
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.. warning::
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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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Intersil/Zilker Labs DC-DC controllers require a minimum interval between I2C
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bus accesses. According to Intersil, the minimum interval is 2 ms, though 1 ms
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appears to be sufficient and has not caused any problems in testing. The problem
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is known to affect all currently supported chips. For manual override, the
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driver provides a writeable module parameter, 'delay', which can be used to set
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the interval to 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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======================= ========================================================
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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 minimum 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 "vmon"
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in2_input Measured voltage on VMON (ZL2004) or VDRV (ZL9101M,
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ZL9117M) pin. Reported voltage is 16x the voltage on the
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pin (adjusted internally by the chip).
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in2_lcrit Critical minimum VMON/VDRV Voltage.
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in2_crit Critical maximum VMON/VDRV voltage.
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in2_lcrit_alarm VMON/VDRV voltage critical low alarm.
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in2_crit_alarm VMON/VDRV voltage critical high alarm.
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vmon attributes are supported on ZL2004, ZL9101M,
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and ZL9117M only.
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inX_label "vout1"
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inX_input Measured output voltage.
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inX_lcrit Critical minimum output Voltage.
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inX_crit Critical maximum output voltage.
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inX_lcrit_alarm Critical output voltage critical low alarm.
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inX_crit_alarm Critical output voltage critical high alarm.
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X is 3 for ZL2004, ZL9101M, and ZL9117M, 2 otherwise.
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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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======================= ========================================================
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