linux-kernel - Re: [PATCH] amdgpu: disable amdgpu_dpm on THTF-SW831-1W-DS25

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Message-ID: <CADnq5_MJTTX0koP7am-D0RoZro=0_e38ic5BoJuKhbyM6y-99g@mail.gmail.com>
Date: Wed, 28 Aug 2024 12:14:55 -0400
From: Alex Deucher <alexdeucher@...il.com>
To: WangYuli <wangyuli@...ontech.com>
Cc: alexander.deucher@....com, christian.koenig@....com, Xinhui.Pan@....com, 
	airlied@...il.com, daniel@...ll.ch, lijo.lazar@....com, 
	mario.limonciello@....com, le.ma@....com, Jun.Ma2@....com, 
	hamza.mahfooz@....com, andrealmeid@...lia.com, wenlunpeng@...ontech.com, 
	amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org, guanwentao@...ontech.com, zhanjun@...ontech.com
Subject: Re: [PATCH] amdgpu: disable amdgpu_dpm on THTF-SW831-1W-DS25_MB board

On Wed, Aug 28, 2024 at 11:47 AM WangYuli <wangyuli@...ontech.com> wrote:
>
>
> On 2024/8/28 23:30, Alex Deucher wrote:
> > On Wed, Aug 28, 2024 at 7:28 AM WangYuli <wangyuli@...ontech.com> wrote:
> >
> > This will disable dpm on all devices that you might install on this
> > platform.  If this is specific to a particular platform and board
> > combination, it might be better to check the platform in the
> > dpm_init() code for the specific chip that is problematic.
> > Additionally, disabling dpm will result in boot clocks which means
> > performance will be very low.
> >
> > Alex
>
> This motherboard model doesn't have combinations with different
> platforms or chipsets now.Their model numbers are unique,so it seems
> unnecessary to add extra judgment.

The error message looks to be from an SI board which is a dGPU.  Is
that dGPU integrated into the motherboard?  Does the motherboard have
PCIe slots?  If there are PCIe slots you could presumably put any GPU
into it and if you did, dpm would be disabled by default.

Alex