Re: [PATCH 05/10] usb: chipidea: msm: support the HSIC asynchronous wakeup interrupt
Konrad Dybcio <[email protected]>
| Newsgroups | org.infradead.lists.linux-phy,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-gpio,org.kernel.vger.linux-kernel,org.kernel.vger.linux-usb |
|---|---|
| Message-ID | <[email protected]> |
On 8/10/26 5:42 PM, Dmitry Baryshkov wrote:
> The HSIC instances of the chipidea controller runtime-suspend with
> their clocks gated whenever the bus is empty. HSIC has no VBUS-style
> connect detection: a device (such as an onboard hub coming out of
> reset) signals a single connect event, and if the controller is
> suspended at that moment the connect is never noticed and the device
> never enumerates.
[...]
> + /*
> + * The optional second interrupt is the asynchronous wakeup interrupt
> + * of the HSIC instances: without it a bus connect arriving while the
> + * runtime-suspended controller has its clocks gated is never seen.
> + */
> + wake_irq = platform_get_irq_optional(pdev, 1);
> + if (wake_irq > 0) {
> + device_init_wakeup(&plat_ci->dev, true);
> + ret = dev_pm_set_dedicated_wake_irq(&plat_ci->dev, wake_irq);
devm_pm_set_wake_irq()?
Konrad
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