aboutsummaryrefslogtreecommitdiff
path: root/Documentation/hwmon/zl6100
diff options
context:
space:
mode:
authorFathi Boudra <fathi.boudra@linaro.org>2013-04-28 09:33:08 +0300
committerFathi Boudra <fathi.boudra@linaro.org>2013-04-28 09:33:08 +0300
commit3b4bd47f8f4ed3aaf7c81c9b5d2d37ad79fadf4a (patch)
treeb9996006addfd7ae70a39672b76843b49aebc189 /Documentation/hwmon/zl6100
downloadlinux-linaro-highbank-upstream/3.9.0.tar.gz
Imported Upstream version 3.9.0HEADupstream/3.9.0upstreammaster
Diffstat (limited to 'Documentation/hwmon/zl6100')
-rw-r--r--Documentation/hwmon/zl6100160
1 files changed, 160 insertions, 0 deletions
diff --git a/Documentation/hwmon/zl6100 b/Documentation/hwmon/zl6100
new file mode 100644
index 00000000..756b57c6
--- /dev/null
+++ b/Documentation/hwmon/zl6100
@@ -0,0 +1,160 @@
+Kernel driver zl6100
+====================
+
+Supported chips:
+ * Intersil / Zilker Labs ZL2004
+ Prefix: 'zl2004'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6847.pdf
+ * Intersil / Zilker Labs ZL2005
+ Prefix: 'zl2005'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6848.pdf
+ * Intersil / Zilker Labs ZL2006
+ Prefix: 'zl2006'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6850.pdf
+ * Intersil / Zilker Labs ZL2008
+ Prefix: 'zl2008'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6859.pdf
+ * Intersil / Zilker Labs ZL2105
+ Prefix: 'zl2105'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6851.pdf
+ * Intersil / Zilker Labs ZL2106
+ Prefix: 'zl2106'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6852.pdf
+ * Intersil / Zilker Labs ZL6100
+ Prefix: 'zl6100'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6876.pdf
+ * Intersil / Zilker Labs ZL6105
+ Prefix: 'zl6105'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn6906.pdf
+ * Intersil / Zilker Labs ZL9101M
+ Prefix: 'zl9101'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn7669.pdf
+ * Intersil / Zilker Labs ZL9117M
+ Prefix: 'zl9117'
+ Addresses scanned: -
+ Datasheet: http://www.intersil.com/data/fn/fn7914.pdf
+ * Ericsson BMR450, BMR451
+ Prefix: 'bmr450', 'bmr451'
+ Addresses scanned: -
+ Datasheet:
+http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146401
+ * Ericsson BMR462, BMR463, BMR464
+ Prefixes: 'bmr462', 'bmr463', 'bmr464'
+ Addresses scanned: -
+ Datasheet:
+http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146256
+
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+This driver supports hardware montoring for Intersil / Zilker Labs ZL6100 and
+compatible digital DC-DC controllers.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus and Documentation.hwmon/pmbus-core for details
+on PMBus client drivers.
+
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices for
+details.
+
+WARNING: Do not access chip registers using the i2cdump command, and do not use
+any of the i2ctools commands on a command register used to save and restore
+configuration data (0x11, 0x12, 0x15, 0x16, and 0xf4). The chips supported by
+this driver interpret any access to those command registers (including read
+commands) as request to execute the command in question. Unless write accesses
+to those registers are protected, this may result in power loss, board resets,
+and/or Flash corruption. Worst case, your board may turn into a brick.
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data.
+
+
+Module parameters
+-----------------
+
+delay
+-----
+
+Intersil/Zilker Labs DC-DC controllers require a minimum interval between I2C
+bus accesses. According to Intersil, the minimum interval is 2 ms, though 1 ms
+appears to be sufficient and has not caused any problems in testing. The problem
+is known to affect all currently supported chips. For manual override, the
+driver provides a writeable module parameter, 'delay', which can be used to set
+the interval to a value between 0 and 65,535 microseconds.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported. Limits are read-write; all other
+attributes are read-only.
+
+in1_label "vin"
+in1_input Measured input voltage.
+in1_min Minimum input voltage.
+in1_max Maximum input voltage.
+in1_lcrit Critical minimum input voltage.
+in1_crit Critical maximum input voltage.
+in1_min_alarm Input voltage low alarm.
+in1_max_alarm Input voltage high alarm.
+in1_lcrit_alarm Input voltage critical low alarm.
+in1_crit_alarm Input voltage critical high alarm.
+
+in2_label "vmon"
+in2_input Measured voltage on VMON (ZL2004) or VDRV (ZL9101M,
+ ZL9117M) pin. Reported voltage is 16x the voltage on the
+ pin (adjusted internally by the chip).
+in2_lcrit Critical minumum VMON/VDRV Voltage.
+in2_crit Critical maximum VMON/VDRV voltage.
+in2_lcrit_alarm VMON/VDRV voltage critical low alarm.
+in2_crit_alarm VMON/VDRV voltage critical high alarm.
+
+ vmon attributes are supported on ZL2004, ZL9101M,
+ and ZL9117M only.
+
+inX_label "vout1"
+inX_input Measured output voltage.
+inX_lcrit Critical minimum output Voltage.
+inX_crit Critical maximum output voltage.
+inX_lcrit_alarm Critical output voltage critical low alarm.
+inX_crit_alarm Critical output voltage critical high alarm.
+
+ X is 3 for ZL2004, ZL9101M, and ZL9117M, 2 otherwise.
+
+curr1_label "iout1"
+curr1_input Measured output current.
+curr1_lcrit Critical minimum output current.
+curr1_crit Critical maximum output current.
+curr1_lcrit_alarm Output current critical low alarm.
+curr1_crit_alarm Output current critical high alarm.
+
+temp[12]_input Measured temperature.
+temp[12]_min Minimum temperature.
+temp[12]_max Maximum temperature.
+temp[12]_lcrit Critical low temperature.
+temp[12]_crit Critical high temperature.
+temp[12]_min_alarm Chip temperature low alarm.
+temp[12]_max_alarm Chip temperature high alarm.
+temp[12]_lcrit_alarm Chip temperature critical low alarm.
+temp[12]_crit_alarm Chip temperature critical high alarm.