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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-15 10:26:50 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-15 10:26:50 -0400
commit12e04ffcd93b25dfd726d46338c2ee7d23de556e (patch)
treef91479a62805619168994fd3ee55e3ffa23fc24e /Documentation/hwmon/lm75
parent9eff37a8713939f218ab8bf0dc93f1d67af7b8b4 (diff)
parentf722406faae2d073cc1d01063d1123c35425939e (diff)
Merge tag 'v3.10-rc1' into stable/for-linus-3.10
Linux 3.10-rc1 * tag 'v3.10-rc1': (12273 commits) Linux 3.10-rc1 [SCSI] qla2xxx: Update firmware link in Kconfig file. [SCSI] iscsi class, qla4xxx: fix sess/conn refcounting when find fns are used [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type [SCSI] pm80xx: thermal, sas controller config and error handling update [SCSI] pm80xx: NCQ error handling changes [SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers [SCSI] pm80xx: Changed module name and debug messages update [SCSI] pm80xx: Firmware flash memory free fix, with addition of new memory region for it [SCSI] pm80xx: SPC new firmware changes for device id 0x8081 alone [SCSI] pm80xx: Added SPCv/ve specific hardware functionalities and relevant changes in common files [SCSI] pm80xx: MSI-X implementation for using 64 interrupts [SCSI] pm80xx: Updated common functions common for SPC and SPCv/ve [SCSI] pm80xx: Multiple inbound/outbound queue configuration [SCSI] pm80xx: Added SPCv/ve specific ids, variables and modify for SPC [SCSI] lpfc: fix up Kconfig dependencies [SCSI] Handle MLQUEUE busy response in scsi_send_eh_cmnd dm cache: set config value dm cache: move config fns dm thin: generate event when metadata threshold passed ...
Diffstat (limited to 'Documentation/hwmon/lm75')
-rw-r--r--Documentation/hwmon/lm7515
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index 69af1c7db6b7..2560a9c6d445 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -12,11 +12,11 @@ Supported chips:
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
- * Dallas Semiconductor DS75, DS1775
- Prefixes: 'ds75', 'ds1775'
+ * Dallas Semiconductor (now Maxim) DS75, DS1775, DS7505
+ Prefixes: 'ds75', 'ds1775', 'ds7505'
Addresses scanned: none
- Datasheet: Publicly available at the Dallas Semiconductor website
- http://www.maxim-ic.com/
+ Datasheet: Publicly available at the Maxim website
+ http://www.maximintegrated.com/
* Maxim MAX6625, MAX6626
Prefixes: 'max6625', 'max6626'
Addresses scanned: none
@@ -67,7 +67,8 @@ the temperature falls below the Hysteresis value.
All temperatures are in degrees Celsius, and are guaranteed within a
range of -55 to +125 degrees.
-The LM75 only updates its values each 1.5 seconds; reading it more often
+The driver caches the values for a period varying between 1 second for the
+slowest chips and 125 ms for the fastest chips; reading it more often
will do no harm, but will return 'old' values.
The original LM75 was typically used in combination with LM78-like chips
@@ -78,8 +79,8 @@ The LM75 is essentially an industry standard; there may be other
LM75 clones not listed here, with or without various enhancements,
that are supported. The clones are not detected by the driver, unless
they reproduce the exact register tricks of the original LM75, and must
-therefore be instantiated explicitly. The specific enhancements (such as
-higher resolution) are not currently supported by the driver.
+therefore be instantiated explicitly. Higher resolution up to 12-bit
+is supported by this driver, other specific enhancements are not.
The LM77 is not supported, contrary to what we pretended for a long time.
Both chips are simply not compatible, value encoding differs.