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usb: chipidea: core: detach power domain for ci_hdrc platform device

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When add a platform device by calling ci_hdrc_add_device(), this device
will reuse OF node of its parent device. If power-domains property is
provided in the OF node, both two platform devices will be attached to
the same power domain. This should be unnecessary and may bring other
inconsistent behavior. For example, to support wakeup capability, these
two platform device need different power domain state. The parent device
need NOT power domain on for out-band interrupt, but the ci_hdrc device
need power domain on for in-band interrupt. The i.MX95 Soc support
out-band wakeup interrupt, the user need to enable wakeup for the parent
device, but if the user also enable wakeup for ci_hdrc device, the power
domain will keep at on state finally. To exclude such inconsistent
behavior and simplify the power management, detach power domain for ci_hdrc
platform device.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Tested-by: Xu Yang <xu.yang_2@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Xu Yang
2025-09-22 10:21:08 +08:00
committed by Ulf Hansson
parent 3b7685da41
commit dfdcfc19fe
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/chipidea/core.c
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@@ -27,6 +27,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/pm_domain.h>
#include <linux/pinctrl/consumer.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -915,6 +916,8 @@ struct platform_device *ci_hdrc_add_device(struct device *dev,
if (ret)
goto err;
dev_pm_domain_detach(&pdev->dev, false);
return pdev;
err: