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drivers/gfx/nvidia: Adjust GC6 Exit timings #257

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drivers/gfx/nvidia: Adjust GC6 Exit timings #257

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18 changes: 16 additions & 2 deletions src/drivers/gfx/nvidia/acpi/common/power.asl
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Original file line number Diff line number Diff line change
@@ -1,9 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0-only */

#include <device/pci_ids.h>

//TODO: evaluate sleeps

OperationRegion (PCIC, PCI_Config, 0x00, 0xFF)
Field (PCIC, DwordAcc, NoLock, Preserve) {
NVID, 16,
NDID, 16,
Offset (0x40),
SSID, 32, // Subsystem vendor and product ID
}
Expand Down Expand Up @@ -31,11 +35,21 @@ Method(GC6O, 0, Serialized) {
// Bring GPU out of reset
Printf(" Bring GPU out of reset")
STXS(DGPU_RST_N)
Sleep(5)
Sleep(10)

// Exit L23
^^L23D()
Sleep(5)

// Wait for GPU to appear on the bus
Local0 = 50
While (NVID != PCI_VID_NVIDIA) {
If (Local0 == 0) {
Break
}

Stall (100)
Local0--
}

Printf(" GPU GC6O FINISH")
}
Expand Down