[+cc Geert, Kevin, Simon] On Mon, Nov 14, 2016 at 11:15:53AM +0000, Srinivas Kandagatla wrote: > This patch adds support to pm clocks via device tree, so that the clocks > can be turned on and off during runtime pm. This patch is required for > Qualcomm msm8996 pcie controller which sits on a bus with its own > power-domain and clocks. > > Without this patch the clock associated with the bus are never turned on. > > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> I don't see a formal maintainer for drivers/bus/simple-pm-bus.c, but I'd like an ack or at least a review from Geert or Simon. > --- > drivers/bus/simple-pm-bus.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/drivers/bus/simple-pm-bus.c b/drivers/bus/simple-pm-bus.c > index c5eb46c..63b7e8c 100644 > --- a/drivers/bus/simple-pm-bus.c > +++ b/drivers/bus/simple-pm-bus.c > @@ -11,6 +11,7 @@ > #include <linux/module.h> > #include <linux/of_platform.h> > #include <linux/platform_device.h> > +#include <linux/pm_clock.h> > #include <linux/pm_runtime.h> > > > @@ -22,17 +23,26 @@ static int simple_pm_bus_probe(struct platform_device *pdev) > > pm_runtime_enable(&pdev->dev); > > - if (np) > + if (np) { > + of_pm_clk_add_clks(&pdev->dev); > of_platform_populate(np, NULL, NULL, &pdev->dev); > + } > > return 0; > } > > +static const struct dev_pm_ops simple_pm_bus_pm_ops = { > + SET_RUNTIME_PM_OPS(pm_clk_suspend, > + pm_clk_resume, NULL) > +}; > + > static int simple_pm_bus_remove(struct platform_device *pdev) > { > dev_dbg(&pdev->dev, "%s\n", __func__); > > pm_runtime_disable(&pdev->dev); > + pm_clk_destroy(&pdev->dev); > + > return 0; > } > > @@ -48,6 +58,7 @@ static struct platform_driver simple_pm_bus_driver = { > .driver = { > .name = "simple-pm-bus", > .of_match_table = simple_pm_bus_of_match, > + .pm = &simple_pm_bus_pm_ops, > }, > }; > > -- > 2.10.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html