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| author | Siyuan Wang <wangsiyuanbuaa@gmail.com> | 2013-05-31 19:36:30 +0800 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-05-31 17:50:53 +0200 |
| commit | 0390112407c042211428a2aee1ab77422caab338 (patch) | |
| tree | 64da904e5dcf31d3ec321d2e304997930759a46a /src/mainboard/amd | |
| parent | d189229b45866105a8f4a8aac44a59774d030f81 (diff) | |
| download | coreboot-0390112407c042211428a2aee1ab77422caab338.tar.xz | |
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/mainboard/amd')
| -rw-r--r-- | src/mainboard/amd/parmer/dsdt.asl | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mainboard/amd/parmer/dsdt.asl b/src/mainboard/amd/parmer/dsdt.asl index faf3ad74a7..3e408c8e78 100644 --- a/src/mainboard/amd/parmer/dsdt.asl +++ b/src/mainboard/amd/parmer/dsdt.asl @@ -202,6 +202,14 @@ DefinitionBlock ( /* PM1 Event Block * First word is PM1_Status, Second word is PM1_Enable */ + + /* AcpiGpe0Blk */ + OperationRegion(GP0B, SystemMemory, 0xfed80814, 0x04) + Field(GP0B, ByteAcc, NoLock, Preserve) { + , 11, + USBS, 1, + } + Scope(\_SB) { /* PCIe Configuration Space for CONFIG_MMCONF_BUS_NUMBER busses */ OperationRegion(PCFG, SystemMemory, PCBA, PCLN) @@ -844,6 +852,7 @@ DefinitionBlock ( * Store(Arg0, Index(WKST,1)) * } */ + Store(1, USBS) Return(WKST) } /* End Method(\_WAK) */ |