diff options
| author | Peng Fan <peng.fan@nxp.com> | 2025-09-22 10:21:07 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-11-19 18:06:49 +0100 |
| commit | 3b7685da41838eda57f56e804014091769a93700 (patch) | |
| tree | b03117021cf09263fe0254acb5b36605d627a951 | |
| parent | 4acbfb6c116be5989d5a0e38a48deca2d5b8bb92 (diff) | |
pmdomain: core: Allow power-off for out-of-band wakeup-capable devices
Currently, if a device is configured as a system wakeup source, the PM
domain core avoids powering off its power domain during system-wide
suspend. However, this can lead to unnecessary power consumption,
especially for devices whose wakeup logic resides in an always-on domain,
i.e., devices with out-of-band wakeup capability.
To address this, add a check for device_out_band_wakeup() in
genpd_finish_suspend(). If the device supports out-of-band wakeup, its
power domain can be safely powered off, just like regular devices without
wakeup enabled. And same check in genpd_finish_resume().
This change improves power efficiency without compromising wakeup
functionality.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/pmdomain/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c index 61c2277c9ce3..4925bc1c4410 100644 --- a/drivers/pmdomain/core.c +++ b/drivers/pmdomain/core.c @@ -1545,7 +1545,8 @@ static int genpd_finish_suspend(struct device *dev, if (ret) return ret; - if (device_awake_path(dev) && genpd_is_active_wakeup(genpd)) + if (device_awake_path(dev) && genpd_is_active_wakeup(genpd) && + !device_out_band_wakeup(dev)) return 0; if (genpd->dev_ops.stop && genpd->dev_ops.start && @@ -1600,7 +1601,8 @@ static int genpd_finish_resume(struct device *dev, if (IS_ERR(genpd)) return -EINVAL; - if (device_awake_path(dev) && genpd_is_active_wakeup(genpd)) + if (device_awake_path(dev) && genpd_is_active_wakeup(genpd) && + !device_out_band_wakeup(dev)) return resume_noirq(dev); genpd_lock(genpd); |