From khali@linux-fr.org Thu Jun 23 14:41:53 2005 Date: Thu, 23 Jun 2005 23:37:53 +0200 From: Jean Delvare To: Greg KH , Ben Gardner Subject: I2C: max6875 documentation update Message-Id: <20050623233753.5c65bf0b.khali@linux-fr.org> Here is a proposed documentation update for the new max6875 i2c chip driver. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- Documentation/i2c/chips/max6875 | 22 +++++++++++++++++----- 1 files changed, 17 insertions(+), 5 deletions(-) --- gregkh-2.6.orig/Documentation/i2c/chips/max6875 2005-06-29 07:55:17.000000000 -0700 +++ gregkh-2.6/Documentation/i2c/chips/max6875 2005-07-01 14:44:03.000000000 -0700 @@ -2,10 +2,10 @@ ===================== Supported chips: - * Maxim max6874, max6875 - Prefixes: 'max6875' + * Maxim MAX6874, MAX6875 + Prefix: 'max6875' Addresses scanned: 0x50, 0x52 - Datasheets: + Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf Author: Ben Gardner @@ -23,14 +23,26 @@ Description ----------- -The MAXIM max6875 is a EEPROM-programmable power-supply sequencer/supervisor. +The Maxim MAX6875 is an EEPROM-programmable power-supply sequencer/supervisor. It provides timed outputs that can be used as a watchdog, if properly wired. It also provides 512 bytes of user EEPROM. -At reset, the max6875 reads the configuration eeprom into its configuration +At reset, the MAX6875 reads the configuration EEPROM into its configuration registers. The chip then begins to operate according to the values in the registers. +The Maxim MAX6874 is a similar, mostly compatible device, with more intputs +and outputs: + + vin gpi vout +MAX6874 6 4 8 +MAX6875 4 3 5 + +MAX6874 chips can have four different addresses (as opposed to only two for +the MAX6875). The additional addresses (0x54 and 0x56) are not probed by +this driver by default, but the probe module parameter can be used if +needed. + See the datasheet for details on how to program the EEPROM.