If CONFIG_PM_RUNTIME is not set, the clocks must be enabled before the
devices can be used.
Currently these clocks are enabled by the !CONFIG_PM_RUNTIME version of
pm_clk_notify, activated by the hack in drivers/sh/pm_runtime.c, but
this will go away soon (at least for DT).
On detach, disabling the clocks is already handled by pm_clk_destroy().
On system suspend/resume, disabling/enabling clocks is already handled
from the genpd->dev_ops.{start,stop}() callbacks.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v4:
- New.
---
arch/arm/mach-shmobile/pm-rmobile.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/mach-shmobile/pm-rmobile.c b/arch/arm/mach-shmobile/pm-rmobile.c
index 068608d5f54a9a64..6fb86cdb9fa2b3a7 100644
--- a/arch/arm/mach-shmobile/pm-rmobile.c
+++ b/arch/arm/mach-shmobile/pm-rmobile.c
@@ -117,6 +117,14 @@ static int rmobile_pd_attach_dev(struct device *dev)
goto fail;
}
+ if (!IS_ENABLED(CONFIG_PM_RUNTIME)) {
+ error = pm_clk_resume(dev);
+ if (error) {
+ dev_err(dev, "pm_clk_resume failed %d\n", error);
+ goto fail;
+ }
+ }
+
return 0;
fail:
--
1.9.1
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