Re: [PATCH] accel/ivpu: Remove D3hot delay for Meteorlake

2023-04-03 Thread Stanislaw Gruszka
On Fri, Mar 31, 2023 at 02:26:04PM -0500, Bjorn Helgaas wrote: > On Fri, Mar 31, 2023 at 01:40:27PM +0200, Stanislaw Gruszka wrote: > > From: Karol Wachowski > > > > VPU on MTL has hardware optimizations and does not require 10ms > > D0 - D3hot transition delay imposed by PCI specification. > >

Re: [PATCH] accel/ivpu: Remove D3hot delay for Meteorlake

2023-03-31 Thread Bjorn Helgaas
On Fri, Mar 31, 2023 at 01:40:27PM +0200, Stanislaw Gruszka wrote: > From: Karol Wachowski > > VPU on MTL has hardware optimizations and does not require 10ms > D0 - D3hot transition delay imposed by PCI specification. PCIe r6.0, sec 5.9. > The delay removal is traditionally done by adding PCI

[PATCH] accel/ivpu: Remove D3hot delay for Meteorlake

2023-03-31 Thread Stanislaw Gruszka
From: Karol Wachowski VPU on MTL has hardware optimizations and does not require 10ms D0 - D3hot transition delay imposed by PCI specification. The delay removal is traditionally done by adding PCI ID to quirk_remove_dhot_delay() in drivers/pci/quirks.c . But since we do not need that optimizati