Commit graph

10 commits

Author SHA1 Message Date
Heiko Schocher
780f13a9e1 hwmon: do not init sensors on startup
The U-Boot Design Principles[1] clearly say:

  Initialize devices only when they are needed within U-Boot, i.e. don't
  initialize the Ethernet interface(s) unless U-Boot performs a download
  over Ethernet; don't initialize any IDE or USB devices unless U-Boot
  actually tries to load files from these, etc. (and don't forget to
  shut down these devices after using them - otherwise nasty things may
  happen when you try to boot your OS).

So, do not initialize and read the sensors on startup.

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Holger Brunck <holger.brunck@keymile.com>
2011-08-04 23:30:38 +02:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Heiko Schocher
8e442df438 lm75: Make the LM75 MULTI_BUS compatible.
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:01 +02:00
Heiko Schocher
12f1678127 lm75: fix Codingstyle issues.
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-10-18 21:54:01 +02:00
Peter Tyser
81e612014c Remove CFG_EEPROM_PAGE* dependencies for temperature sensors
The checks for CFG_EEPROM_PAGE_WRITE_ENABLE and
CFG_EEPROM_PAGE_WRITE_BITS in various temperature
sensor drivers are not necessary

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2008-10-14 14:39:56 +02:00
Victor Gallardo
9ebbb54f7a ppc4xx: Allow DTT_I2C_DEV_CODE configured by CFG_I2C_DTT_ADDR
On AMCC Arches board DTT_I2C_DEV_CODE is different then canyonlands
and glacier.

Signed-off-by: Victor Gallardo <vgallardo@amcc.com>
2008-09-10 11:08:45 +02:00
Michal Simek
6ecbb45bb0 hwmon: Cleaning hwmon devices
Clean Makefile
Move device specific values to driver for better reading

Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stefan Roese <sr@denx.de>
2008-07-13 15:26:18 +02:00
Stefan Roese
4d91d1df2f DTT: Issue one-shot command on AD7414 (LM75 code) to read temp
On AD7414 the first value upon bootup is not read correctly.
This is most likely because of the 800ms update time of the
temp register in normal update mode. To get current values
each time we issue the "dtt" command including upon powerup
we switch into one-short mode.

This patch fixes the problem on AD7414 equipped boards (Sequoia,
Canyonlands etc), that temp value printed in the bootup log was
incorrect.

Signed-off-by: Stefan Roese <sr@denx.de>
2008-06-03 21:00:00 +02:00
Larry Johnson
d01b847c5c LM75 bug fix for negative temperatures
When the LM75 temperature sensor measures a temperature below 0 C, the
current driver does not perform sign extension, so the result returned is
256 C too high.  This patch fixes the problem.

Signed-off-by: Larry Johnson <lrj@acm.org>
2008-02-22 16:33:09 +01:00
Jean-Christophe PLAGNIOL-VILLARD
f868cc5a50 drivers/hwmon : move hardware monitor drviers to drivers/hwmon
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2007-11-25 23:28:50 +01:00
Renamed from dtt/lm75.c (Browse further)