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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2017-06-21 22:24:15 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2017-10-20 11:15:33 +0200 |
| commit | 1f4023cdd1bdbe6cb01d0b2cbd1f46207189e3cf (patch) | |
| tree | 722b66d177d78224d334f2c170d775fc151a06c0 /drivers/clk/renesas/rcar-gen3-cpg.c | |
| parent | 560869100b99a3daea329efce738a3b7ae357be8 (diff) | |
| download | lwn-1f4023cdd1bdbe6cb01d0b2cbd1f46207189e3cf.tar.gz lwn-1f4023cdd1bdbe6cb01d0b2cbd1f46207189e3cf.zip | |
clk: renesas: cpg-mssr: Add support to restore core clocks during resume
On R-Car Gen3 systems, PSCI system suspend powers down the SoC, possibly
losing clock configuration. Hence add a notifier chain that can be used
by core clocks to save/restore clock state during system suspend/resume.
The implementation of the actual clock state save/restore operations is
clock-specific, and to be registered with the notifier chain in the SoC
or family-specific cpg_mssr_info.cpg_clk_register() callback.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Diffstat (limited to 'drivers/clk/renesas/rcar-gen3-cpg.c')
| -rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index 951105816547..139985257003 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -265,7 +265,8 @@ static const struct soc_device_attribute cpg_quirks_match[] __initconst = { struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, const struct cpg_core_clk *core, const struct cpg_mssr_info *info, - struct clk **clks, void __iomem *base) + struct clk **clks, void __iomem *base, + struct raw_notifier_head *notifiers) { const struct clk *parent; unsigned int mult = 1; |