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Message-ID: <202308172225433f4bb84b@mail.local>
Date: Fri, 18 Aug 2023 00:25:43 +0200
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Mike Looijmans <mike.looijmans@...ic.nl>
Cc: linux-rtc@...r.kernel.org, Alessandro Zummo <a.zummo@...ertech.it>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: pcf85363: Allow to wake up system without IRQ
On 17/08/2023 11:02:43+0200, Mike Looijmans wrote:
> > My comment was also for device_init_wakeup(&client->dev, true);. I think
> > the easiest would be to move this block later on and set client->irq to
> > 0 when devm_request_threaded_irq fails.
> >
>
> Ah, clear. That also properly handles things when IRQ fails but
> wakeup-source was present. In table form:
>
> IRQ wakeup-source Call "device_init_wakeup" etc.
> N/A No No
> N/A Yes Yes
> OK No Yes
> OK Yes Yes
This case is forbidden, you must not have an interrupt property and
wakeup-source at the same time.
> FAIL No No
> FAIL Yes Yes
This is then also forbidden
>
> We still have to program the registers before registering the IRQ I think.
Yes, certainly.
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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