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| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2012-03-13 17:05:14 +0100 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2012-03-14 17:17:03 +0100 |
| commit | fecfb64422d91a9621a3f96ab75c3a5f13e80b58 (patch) | |
| tree | d0b7fb8922d0a8b0ead112b87ea377450fb5b1b7 /Documentation | |
| parent | hwmon: (w83627ehf) Describe undocumented pwm attributes (diff) | |
| download | linux-fecfb64422d91a9621a3f96ab75c3a5f13e80b58.tar.xz linux-fecfb64422d91a9621a3f96ab75c3a5f13e80b58.zip | |
hwmon: (zl6100) Enable interval between chip accesses for all chips
Intersil reports that all chips supported by the zl6100 driver require
an interval between chip accesses, even ZL2004 and ZL6105 which were thought
to be safe.
Reported-by: Vivek Gani <vgani@intersil.com>
Cc: stable@vger.kernel.org # 3.2+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/zl6100 | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/Documentation/hwmon/zl6100 b/Documentation/hwmon/zl6100 index 51f76a189fee..a4e8d90f59f6 100644 --- a/Documentation/hwmon/zl6100 +++ b/Documentation/hwmon/zl6100 @@ -88,14 +88,12 @@ Module parameters delay ----- -Some 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 ZL6100, ZL2105, and ZL2008. It is known not to -affect ZL2004 and ZL6105. The driver automatically sets the interval to 1 ms -except for ZL2004 and ZL6105. To enable 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. +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 |