[Bug 101528] RX460 Memory clock stays high until card is "used"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101528

--- Comment #4 from Alexander Tsoy <alexander at tsoy.me> ---
(In reply to Alex Deucher from comment #3)
> Created attachment 132358 [details] [review]
> possible fix

This patch fixes this bug for me. Thank you!

[  359.229187] AMDGPU: vblank_time_us: 630, switch_limit_us: 450
[  359.234933] AMDGPU: vblank_time_us: 630, switch_limit_us: 450
[  359.240684] AMDGPU: disable_mclk_switching: 0,
disable_mclk_switching_for_frame_lock: 0, info.display_count: 1,
smu7_vblank_too_short: 0, mode_info.refresh_rate: 60
[  359.283987] AMDGPU: vblank_time_us: 4294967295, switch_limit_us: 450
[  359.290342] AMDGPU: vblank_time_us: 4294967295, switch_limit_us: 450
[  359.296703] AMDGPU: disable_mclk_switching: 0,
disable_mclk_switching_for_frame_lock: 0, info.display_count: 1,
smu7_vblank_too_short: 0, mode_info.refresh_rate: 0
...
...

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