linux-kernel - Re: [PATCH V3 1/4] gpio: eic-sprd: Keep the clock rtc

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Message-ID: <CAB9BWhc0WyvMMudKcpuOw3=hqiWrC4e47fri6ywqYojULHnAdQ@mail.gmail.com>
Date: Fri, 5 Jan 2024 10:11:14 +0800
From: wenhua lin <wenhua.lin1994@...il.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Wenhua Lin <Wenhua.Lin@...soc.com>, Linus Walleij <linus.walleij@...aro.org>, 
	Andy Shevchenko <andy@...nel.org>, Bartosz Golaszewski <brgl@...ev.pl>, Orson Zhai <orsonzhai@...il.com>, 
	Baolin Wang <baolin.wang@...ux.alibaba.com>, Chunyan Zhang <zhang.lyra@...il.com>, 
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Xiongpeng Wu <xiongpeng.wu@...soc.com>
Subject: Re: [PATCH V3 1/4] gpio: eic-sprd: Keep the clock rtc_1k on

On Thu, Jan 4, 2024 at 9:00 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> On Thu, Jan 4, 2024 at 4:43 AM Wenhua Lin <Wenhua.Lin@...soc.com> wrote:
> >
> > The eic debounce does not have a clock of rtc_1k in the sleep state,
> > but the eic debounce will be used to wake up the system, therefore the
> > clock of rtc_1k needs to be kept open.
>
> ...
>
> > +#define SPRD_EIC_DBNC_FORCE_CLK                0x8000
>
> BIT(15) ?
>

Yes, writing 1 to bit15 of the register can ensure that the clock of
rtc_1k remains normally on.

> --
> With Best Regards,
> Andy Shevchenko