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sb/amd/sp5100: Enable CPU reset timing option per RPR v3.02 

Change-Id: Ifb568ca126283e533232f52175d6147ee500220c
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/14307
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Timothy Pearson 2016-04-10 15:52:47 -05:00
parent 796e77ef25
commit d1b6ff80c0
1 changed files with 5 additions and 0 deletions
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5
src/southbridge/amd/sb700/early_setup.c
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@ -677,6 +677,11 @@ static void sb700_pmio_por_init(void)
pmio_write(0xbb, byte); pmio_write(0xbb, byte);
#if CONFIG_SOUTHBRIDGE_AMD_SUBTYPE_SP5100 #if CONFIG_SOUTHBRIDGE_AMD_SUBTYPE_SP5100
/* RPR 2.26 Alter CPU reset timing */
byte = pmio_read(0xb2);
byte |= 0x1 << 2; /* Enable CPU reset timing option */
pmio_write(0xb2, byte);
/* Work around system clock drift issues */ /* Work around system clock drift issues */
byte = pmio_read(0xd4); byte = pmio_read(0xd4);
byte |= 0x1 << 6; /* Enable alternate 14MHz clock source */ byte |= 0x1 << 6; /* Enable alternate 14MHz clock source */