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baytrail: allow function disable on TXE

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Previously it was not known how to put the TXE pci device
into D3Hot. It's been disseminated that this is not a requirement
for disabling the TXE pci device in the function disable register.
Therefore, allow this by returning 0 from place_device_in_d3hot().

BUG=chrome-os-partner:22871
BRANCH=None
TEST=Temporarily set TXE to be disabled. Noted FUNC_DIS was being
     set accordingly.

Change-Id: Ibf537bf8ba718859591dc89bdf41e57c1ea9d836
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/175490
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Aaron Durbin 2013-10-30 17:08:59 -05:00 • committed by chrome-internal-fetch
commit 7034936b15
1 changed files with 2 additions and 0 deletions
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2
src/soc/intel/baytrail/southcluster.c
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@ -264,6 +264,8 @@ static int place_device_in_d3hot(device_t dev)
offset = 0x50;
break;
DEV_CASE(TXE):
/* TXE cannot be placed in D3Hot. */
return 0;
break;
DEV_CASE(PCIE_PORT1):
DEV_CASE(PCIE_PORT2):