From khali@linux-fr.org Thu Jun 23 14:41:53 2005
Date: Thu, 23 Jun 2005 23:37:53 +0200
From: Jean Delvare <khali@linux-fr.org>
To: Greg KH <greg@kroah.com>, Ben Gardner <BGardner@Wabtec.com>
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 <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
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 <bgardner@wabtec.com>
@@ -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.