aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/hwmon/zl6100
diff options
context:
space:
mode:
authorGuenter Roeck <guenter.roeck@ericsson.com>2012-03-13 12:05:14 -0400
committerGuenter Roeck <guenter.roeck@ericsson.com>2012-03-14 12:17:03 -0400
commitfecfb64422d91a9621a3f96ab75c3a5f13e80b58 (patch)
treed0b7fb8922d0a8b0ead112b87ea377450fb5b1b7 /Documentation/hwmon/zl6100
parentc43524b580e9599ef0d16adbbc4aa7ae808276ae (diff)
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/hwmon/zl6100')
-rw-r--r--Documentation/hwmon/zl610014
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
88delay 88delay
89----- 89-----
90 90
91Some Intersil/Zilker Labs DC-DC controllers require a minimum interval between 91Intersil/Zilker Labs DC-DC controllers require a minimum interval between I2C
92I2C bus accesses. According to Intersil, the minimum interval is 2 ms, though 92bus accesses. According to Intersil, the minimum interval is 2 ms, though 1 ms
931 ms appears to be sufficient and has not caused any problems in testing. 93appears to be sufficient and has not caused any problems in testing. The problem
94The problem is known to affect ZL6100, ZL2105, and ZL2008. It is known not to 94is known to affect all currently supported chips. For manual override, the
95affect ZL2004 and ZL6105. The driver automatically sets the interval to 1 ms 95driver provides a writeable module parameter, 'delay', which can be used to set
96except for ZL2004 and ZL6105. To enable manual override, the driver provides a 96the interval to a value between 0 and 65,535 microseconds.
97writeable module parameter, 'delay', which can be used to set the interval to
98a value between 0 and 65,535 microseconds.
99 97
100 98
101Sysfs entries 99Sysfs entries