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-rw-r--r--Documentation/i2c/chips/max687522
1 files changed, 17 insertions, 5 deletions
diff --git a/Documentation/i2c/chips/max6875 b/Documentation/i2c/chips/max6875
index b4fb49b41813..b02002898a09 100644
--- a/Documentation/i2c/chips/max6875
+++ b/Documentation/i2c/chips/max6875
@@ -2,10 +2,10 @@ Kernel driver max6875
2===================== 2=====================
3 3
4Supported chips: 4Supported chips:
5 * Maxim max6874, max6875 5 * Maxim MAX6874, MAX6875
6 Prefixes: 'max6875' 6 Prefix: 'max6875'
7 Addresses scanned: 0x50, 0x52 7 Addresses scanned: 0x50, 0x52
8 Datasheets: 8 Datasheet:
9 http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf 9 http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf
10 10
11Author: Ben Gardner <bgardner@wabtec.com> 11Author: Ben Gardner <bgardner@wabtec.com>
@@ -23,14 +23,26 @@ Module Parameters
23Description 23Description
24----------- 24-----------
25 25
26The MAXIM max6875 is a EEPROM-programmable power-supply sequencer/supervisor. 26The Maxim MAX6875 is an EEPROM-programmable power-supply sequencer/supervisor.
27It provides timed outputs that can be used as a watchdog, if properly wired. 27It provides timed outputs that can be used as a watchdog, if properly wired.
28It also provides 512 bytes of user EEPROM. 28It also provides 512 bytes of user EEPROM.
29 29
30At reset, the max6875 reads the configuration eeprom into its configuration 30At reset, the MAX6875 reads the configuration EEPROM into its configuration
31registers. The chip then begins to operate according to the values in the 31registers. The chip then begins to operate according to the values in the
32registers. 32registers.
33 33
34The Maxim MAX6874 is a similar, mostly compatible device, with more intputs
35and outputs:
36
37 vin gpi vout
38MAX6874 6 4 8
39MAX6875 4 3 5
40
41MAX6874 chips can have four different addresses (as opposed to only two for
42the MAX6875). The additional addresses (0x54 and 0x56) are not probed by
43this driver by default, but the probe module parameter can be used if
44needed.
45
34See the datasheet for details on how to program the EEPROM. 46See the datasheet for details on how to program the EEPROM.
35 47
36 48