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nvidia/ck804: Add ability to bypass register 0x78 initialization 

On the ASUS KFSN4-DRE initializing CK804 0x78 causes an almost
immediate soft reset.  Leaving the register at its power-on
default value appears to have no ill effect on that same board.

Change-Id: I833603adea580cb3f4441e35044d1e17d2d67852
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8272
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Timothy Pearson 2015-01-24 13:46:46 -06:00 committed by Alexandru Gagniuc
parent 82982a130c
commit e1cc3abb02
1 changed files with 2 additions and 0 deletions
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src/southbridge/nvidia/ck804/early_setup_car.c
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@ -147,7 +147,9 @@ static void ck804_early_setup(unsigned ck804_num, unsigned *busn,
CK804_MB_SETUP
#endif
#ifndef CK804_SKIP_PCI_REG_78_INIT
RES_PCI_IO, PCI_ADDR(0, 1, 0, 0x78), 0xc0ffffff, 0x19000000,
#endif
RES_PCI_IO, PCI_ADDR(0, 1, 0, 0xe0), 0xfffffeff, 0x00000100,
RES_PORT_IO_32, ANACTRL_IO_BASE + 0x20, 0xe00fffff, 0x11000000,