| Message ID | 20231114-msm8909-cpufreq-v3-3-926097a6e5c1@kernkonzept.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | cpufreq: qcom-nvmem: Fix power domain scaling | expand |
On Tue, 14 Nov 2023 at 11:08, Stephan Gerhold <stephan.gerhold@kernkonzept.com> wrote: > > Set GENPD_FLAG_ACTIVE_WAKEUP for all RPM power domains so that power > domains necessary for wakeup/"awake path" devices are kept on across > suspend. > > This is needed for example for the *_AO ("active-only") variants of the > RPMPDs used by the CPU. Those should maintain their votes also across > system suspend to ensure the CPU can keep running for the whole suspend > process (ending in a firmware call). When the RPM firmware detects that > the CPUs are in a deep idle state it will drop those votes automatically. > > Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Kind regards Uffe > --- > drivers/pmdomain/qcom/rpmpd.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pmdomain/qcom/rpmpd.c b/drivers/pmdomain/qcom/rpmpd.c > index 07590a3ef19c..7796d65f96e8 100644 > --- a/drivers/pmdomain/qcom/rpmpd.c > +++ b/drivers/pmdomain/qcom/rpmpd.c > @@ -1044,6 +1044,7 @@ static int rpmpd_probe(struct platform_device *pdev) > rpmpds[i]->pd.power_off = rpmpd_power_off; > rpmpds[i]->pd.power_on = rpmpd_power_on; > rpmpds[i]->pd.set_performance_state = rpmpd_set_performance; > + rpmpds[i]->pd.flags = GENPD_FLAG_ACTIVE_WAKEUP; > pm_genpd_init(&rpmpds[i]->pd, NULL, true); > > data->domains[i] = &rpmpds[i]->pd; > > -- > 2.39.2 >
diff --git a/drivers/pmdomain/qcom/rpmpd.c b/drivers/pmdomain/qcom/rpmpd.c index 07590a3ef19c..7796d65f96e8 100644 --- a/drivers/pmdomain/qcom/rpmpd.c +++ b/drivers/pmdomain/qcom/rpmpd.c @@ -1044,6 +1044,7 @@ static int rpmpd_probe(struct platform_device *pdev) rpmpds[i]->pd.power_off = rpmpd_power_off; rpmpds[i]->pd.power_on = rpmpd_power_on; rpmpds[i]->pd.set_performance_state = rpmpd_set_performance; + rpmpds[i]->pd.flags = GENPD_FLAG_ACTIVE_WAKEUP; pm_genpd_init(&rpmpds[i]->pd, NULL, true); data->domains[i] = &rpmpds[i]->pd;
Set GENPD_FLAG_ACTIVE_WAKEUP for all RPM power domains so that power domains necessary for wakeup/"awake path" devices are kept on across suspend. This is needed for example for the *_AO ("active-only") variants of the RPMPDs used by the CPU. Those should maintain their votes also across system suspend to ensure the CPU can keep running for the whole suspend process (ending in a firmware call). When the RPM firmware detects that the CPUs are in a deep idle state it will drop those votes automatically. Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com> --- drivers/pmdomain/qcom/rpmpd.c | 1 + 1 file changed, 1 insertion(+)