Peter Tyser 9d921f19b3 post/i2c: Add ability to ignore I2C devices ... Add the ability to not report an I2C POST error for a set of given I2C addresses on bootup. This is useful for cases when a device may or may not be present, and neither case is considered an error. For example: - Some form factors such as XMC and Compact PCI Express have an I2C EEPROM whose address changes based on geographical address. Eg installed in one slot its EEPROM address is, 0x50, in another its 0x51, etc. This allows multiple devices to have their EEPROMs present on the same I2C bus. Thus the I2C devices present for an XMC or CPCIe card depend on if and where other cards are installed in the same system. - Some cards have optional I2C devices. Eg one hardware build configuration has different I2C devices than another and software can't determine if the optional device should be present or not. - Some cards have optional daughtercards with I2C devices on them. - I2C EEPROMs address range depends on their size. Its possible to support differently size EEPROMs by only probing the EEPROM's base address and ignoring the other addresses that are impacted by its size. A new CONFIG_SYS_POST_I2C_IGNORES define has been added which specifies a list of I2C addresses for the I2C POST to ignore. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Acked-by: Heiko Schocher <hs@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>		2010-10-22 02:19:14 -05:00
..
board	ppc4xx: Big lwmon5 board support rework/update	2010-10-04 11:19:35 +02:00
cpu	ppc4xx: Use common ns16550 functions in 4xx UART POST driver	2010-10-04 11:20:02 +02:00
drivers	post/i2c: Add ability to ignore I2C devices	2010-10-22 02:19:14 -05:00
lib_powerpc	Move arch/ppc to arch/powerpc	2010-04-21 23:42:38 +02:00
Makefile	POST cleanup.	2010-09-21 21:39:31 +02:00
post.c	Rename getenv_r() into getenv_f()	2010-08-04 00:45:36 +02:00
rules.mk	Big white-space cleanup.	2008-05-21 00:14:08 +02:00
tests.c	ppc4xx/POST: Add board specific UART POST test to lwmon5	2010-10-20 10:08:08 +02:00