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author | Siyuan Wang <wangsiyuanbuaa@gmail.com> | 2013-05-31 19:36:30 +0800 |
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committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-05-31 17:50:53 +0200 |
commit | 0390112407c042211428a2aee1ab77422caab338 (patch) | |
tree | 64da904e5dcf31d3ec321d2e304997930759a46a /src/southbridge/sis | |
parent | d189229b45866105a8f4a8aac44a59774d030f81 (diff) |
AMD Parmer: fix issue 'S3 fails to suspend after wake up from USB keyboard'
This issue can be reproduced in Linux by the following steps:
1) use pm-suspend to suspend.
2) use USB keyboard to wake up.
3) use pm-suspend to suspend. FAIL To SUSPEND.
The cause of this issue is:
USB devices use bit 11(0x0b) of GP0_STS represents S3 wake up event,
but this bit is not clear after wake up. So OS thinks there is a
wake up signal and wake up immediately.
In this patch, I add AcpiGpe0Blk using MMIO access and write 1
on bit 11. I have tested on Parmer.
Change-Id: Iec3078bf29de99683e7cd3ef4e178fbeb4dc09c1
Signed-off-by: Siyuan Wang <SiYuan.Wang@amd.com>
Signed-off-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-on: http://review.coreboot.org/3347
Tested-by: build bot (Jenkins)
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/southbridge/sis')
0 files changed, 0 insertions, 0 deletions