On Mon, Mar 25, 2024 at 08:21:24PM +0100, Konrad Dybcio wrote: > On 25.03.2024 3:10 PM, Dmitry Baryshkov wrote: > > On Mon, 25 Mar 2024 at 16:01, Mark Brown <broonie@xxxxxxxxxx> wrote: > >> > >> On Mon, Mar 25, 2024 at 09:19:57AM +0100, Johan Hovold wrote: > >>> Since commit deebc79b28d6 ("clk: qcom: gpucc-sc8280xp: Add external > >>> supply for GX gdsc") the GDSC supply must be treated as optional to > >>> avoid warnings like: > >>> > >>> gpu_cc-sc8280xp 3d90000.clock-controller: supply vdd-gfx not found, using dummy regulator > >>> > >>> on SC8280XP. > >> > >> Can this device actually run with the supply physically disconnected? > > > > On SC8280XP this is supplied via power-domain instead of the supply. > > I think Dmitry is asking about this bit: AFAICT, Dmitry did not ask anything. > if (ret != -ENODEV) > return ret; > > which is basically repeating the difference that _optional makes Not sure what you meant by this either. This is how the regulator subsystem works. Johan