amdgpu: Manual Card Configuration Change

[Alex Deucher]

On Sun, Oct 18, 2020 at 4:32 PM Josh Fuhs <Joshua.Fuhs at pm.me> wrote:
>
> Hello all,
>
> Regarding amdgpu, I've been using some Radeon 5700XTs for compute work with kernels through 5.8.14. I recently tried kernel 5.9.0, and found that the following is no longer allowed:
>
> echo "m 1 200" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
>
> Is this an expected change? If so, where should I look for documentation regarding how to manually configure these cards with this kernel. Note, I've had this working with 5.8 kernels for months.
>

It was a bug.  Fixed in 5.9.1.

Alex