On 9 November 2017 at 14:27, Geert Uytterhoeven <[email protected]> wrote: > If a device is part of the CPG/MSSR Clock Domain and to be used as a > wakeup source, it must be kept active during system suspend. > > Currently this is handled in device-specific drivers by explicitly > increasing the use count of the module clock when the device is > configured as a wakeup source. However, the proper way to prevent the > device from being stopped is to inform this requirement to the genpd > core, by setting the GENPD_FLAG_ACTIVE_WAKEUP flag. > > Note that this will only affect devices configured as wakeup sources. > > Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]> Kind regards Uffe > --- > v2: > - Integrate "clk: renesas: cpg-mssr: Use GENPD_FLAG_ACTIVE_WAKEUP", > --- > drivers/clk/renesas/renesas-cpg-mssr.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c > b/drivers/clk/renesas/renesas-cpg-mssr.c > index e580a5e6346c2533..99699b715d7cf2de 100644 > --- a/drivers/clk/renesas/renesas-cpg-mssr.c > +++ b/drivers/clk/renesas/renesas-cpg-mssr.c > @@ -500,7 +500,7 @@ static int __init cpg_mssr_add_clk_domain(struct device > *dev, > > genpd = &pd->genpd; > genpd->name = np->name; > - genpd->flags = GENPD_FLAG_PM_CLK; > + genpd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ACTIVE_WAKEUP; > genpd->attach_dev = cpg_mssr_attach_dev; > genpd->detach_dev = cpg_mssr_detach_dev; > pm_genpd_init(genpd, &pm_domain_always_on_gov, false); > -- > 2.7.4 >
