Commit 9187ebb9 authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Bjorn Andersson
Browse files

clk: qcom: gdsc: Enable supply reglator in GPU GX handler 



The GX GDSC is modelled to aid the GMU in powering down the GPU in the
event that the GPU crashes, so that it can be restarted again. But in
the event that the power-domain is supplied through a dedicated
regulator (in contrast to being a subdomin of another power-domain),
something needs to turn that regulator on, both to make sure things are
powered and to match the operation in gdsc_disable().

Reviewed-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: default avatarBjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240125-sa8295p-gpu-v4-2-7011c2a63037@quicinc.com


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent e60b95d2

drivers/clk/qcom/gdsc.c

+10 −2
Original line number Diff line number Diff line
@@ -557,7 +557,15 @@ void gdsc_unregister(struct gdsc_desc *desc) 
 */

int gdsc_gx_do_nothing_enable(struct generic_pm_domain *domain)

{

	/* Do nothing but give genpd the impression that we were successful */

	return 0;

	struct gdsc *sc = domain_to_gdsc(domain);

	int ret = 0;



	/* Enable the parent supply, when controlled through the regulator framework. */

	if (sc->rsupply)

		ret = regulator_enable(sc->rsupply);



	/* Do nothing with the GDSC itself */



	return ret;

}

EXPORT_SYMBOL_GPL(gdsc_gx_do_nothing_enable);