On Tue, Dec 21, 2021 at 10:13 PM Quan, Evan <evan.q...@amd.com> wrote:
>
> [AMD Official Use Only]
>
>
>
> > -----Original Message-----
> > From: amd-gfx <amd-gfx-boun...@lists.freedesktop.org> On Behalf Of Alex
> > Deucher
> > Sent: Tuesday, December 21, 2021 10:59 PM
> > To: amd-gfx@lists.freedesktop.org
> > Cc: Deucher, Alexander <alexander.deuc...@amd.com>
> > Subject: [PATCH] drm/amdgpu: fix runpm documentation
> >
> > It's not only supported by HG/PX laptops. It's supported
> > by all dGPUs which supports BOCO/BACO functionality (runtime
> > D3).
> >
> > BOCO - Bus Off, Chip Off. The entire chip is powered off.
> > This is controlled by ACPI.
> > BACO - Bus Active, Chip Off. The chip still shows up
> > on the PCI bus, but the device itself is powered
> > down.
> >
> > Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 +++--
> > 1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > index a78bbea9629d..f001924ed92e 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> > @@ -331,9 +331,10 @@ module_param_named(aspm, amdgpu_aspm, int,
> > 0444);
> > /**
> > * DOC: runpm (int)
> > * Override for runtime power management control for dGPUs in PX/HG
> > laptops. The amdgpu driver can dynamically power down
> [Quan, Evan] This("dGPUs in PX/HG latops") needs also be updated. Maybe
> missing unintentionally ?
> With that fixed, the patch is reviewed-by: Evan Quan <evan.q...@amd.com>
Yes, good catch. Fixed up.
Thanks!
Alex
>
> BR
> Evan
> > - * the dGPU on PX/HG laptops when it is idle. The default is -1 (auto
> > enable).
> > Setting the value to 0 disables this functionality.
> > + * the dGPUs when they are idle if supported. The default is -1 (auto
> > enable).
> > + * Setting the value to 0 disables this functionality.
> > */
> > -MODULE_PARM_DESC(runpm, "PX runtime pm (2 = force enable with
> > BAMACO, 1 = force enable with BACO, 0 = disable, -1 = PX only default)");
> > +MODULE_PARM_DESC(runpm, "PX runtime pm (2 = force enable with
> > BAMACO, 1 = force enable with BACO, 0 = disable, -1 = auto)");
> > module_param_named(runpm, amdgpu_runtime_pm, int, 0444);
> >
> > /**
> > --
> > 2.33.1
