diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/acpi/power.asl | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/acpi/power.asl b/src/mainboard/google/brya/acpi/power.asl index ecd48e7a76..c9edf49162 100644 --- a/src/mainboard/google/brya/acpi/power.asl +++ b/src/mainboard/google/brya/acpi/power.asl @@ -294,6 +294,24 @@ Method (NPON, 0, Serialized) SRCC (SRCCLK_ENABLE) PGON () \_SB.PCI0.PEG0.LD23 () + + /* Wait for dGPU to reappear on the bus */ + Local0 = 50 + While (NVID != PCI_VID_NVIDIA) + { + Stall (100) + Local0-- + If (Local0 == 0) + { + Break + } + } + + /* Restore the PEG LTR enable bit */ + LREN = SLTR + + /* Clear recoverable errors detected bit */ + CEDR = 1 } } @@ -312,6 +330,8 @@ Method (NPOF, 0, Serialized) } Else { + /* Save the PEG port's LTR setting */ + SLTR = LREN \_SB.PCI0.PEG0.DL23 () PGOF () SRCC (SRCCLK_DISABLE) |