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authorDuncan Laurie <dlaurie@chromium.org>2013-03-22 11:24:45 -0700
committerRonald G. Minnich <rminnich@gmail.com>2013-04-01 23:27:21 +0200
commita2d6a40480c97043e9126c0fbc9e1a79db22d408 (patch)
treefe62358015161ca7c301276bd1e78d31d467b4ca /src/southbridge/intel/lynxpoint
parent0ce2b4368286df8267bfb290b206671825981248 (diff)
lynxpoint: Fix LP clock gating setup for LPC
This bit offset is incorrect and should only be set based on another bit in a different register. Change-Id: I6037534236e3a4a5d15e15011ed9b5040b435eaf Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/2973 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge/intel/lynxpoint')
-rw-r--r--src/southbridge/intel/lynxpoint/lpc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c
index 6b01489fad..2864876a83 100644
--- a/src/southbridge/intel/lynxpoint/lpc.c
+++ b/src/southbridge/intel/lynxpoint/lpc.c
@@ -458,7 +458,10 @@ static void enable_lp_clock_gating(device_t dev)
RCBA32_OR(0x900, 0x0000031f);
reg32 = RCBA32(CG);
- reg32 |= (1 << 31); // LPC Dynamic
+ if (RCBA32(0x3454) & (1 << 4))
+ reg32 &= ~(1 << 29); // LPC Dynamic
+ else
+ reg32 |= (1 << 29); // LPC Dynamic
reg32 |= (1 << 30); // LP LPC
reg32 |= (1 << 28); // GPIO Dynamic
reg32 |= (1 << 27); // HPET Dynamic