From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-serial <linux-serial@vger.kernel.org>,
Jiri Slaby <jirislaby@kernel.org>
Subject: Re: [PATCH v2 1/1] serial: 8250_of: Drop quirk fot NPCM from 8250_port
Date: Fri, 16 Feb 2024 16:41:37 +0200 (EET) [thread overview]
Message-ID: <3885f098-140c-bd5a-922d-a010236cc87d@linux.intel.com> (raw)
In-Reply-To: <Zc9zsrp5KeSRoqxP@smile.fi.intel.com>
[-- Attachment #1: Type: text/plain, Size: 1445 bytes --]
On Fri, 16 Feb 2024, Andy Shevchenko wrote:
> On Fri, Feb 16, 2024 at 11:31:01AM +0200, Ilpo Järvinen wrote:
> > On Thu, 15 Feb 2024, Andy Shevchenko wrote:
> > > On Thu, Feb 15, 2024 at 06:40:15PM +0200, Ilpo Järvinen wrote:
> > > > On Thu, 15 Feb 2024, Andy Shevchenko wrote:
>
> ...
>
> > > > > + /*
> > > > > + * Nuvoton calls the scratch register 'UART_TOR' (timeout
> > > > > + * register). Enable it, and set TIOC (timeout interrupt
> > > > > + * comparator) to be 0x20 for correct operation.
> > > > > + */
> > > > > + serial_port_out(port, UART_NPCM_TOR, UART_NPCM_TOIE | 0x20);
> > > > > +
> > > > > + return serial8250_do_startup(port);
> > > >
> > > > I know this matches how it is currently done\
> > >
> > > Exactly, I haven't changed the workflow.
> > > Does it mean you are okay with the change?
> >
> > Mostly. Another thing I was let bit unsure if it's okay to move that
> > serial_port_out() outside of RPM get/put that is inside
> > serial8250_do_startup().
>
> We have other (actively used AFAIK) drivers which do the same.
> In any case this driver does not use RPM anyway, and in the future,
> when Tony finalizes his RPM work those 8250 RPM wrappers should gone.
> If somebody implements RPM in this driver, it may be done via standard
> RPM calls.
>
> TL;DR: for now it's okay, I am sure.
Okay,
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
--
i.
prev parent reply other threads:[~2024-02-16 14:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-15 14:50 [PATCH v2 1/1] serial: 8250_of: Drop quirk fot NPCM from 8250_port Andy Shevchenko
2024-02-15 16:40 ` Ilpo Järvinen
2024-02-15 16:43 ` Andy Shevchenko
2024-02-16 9:31 ` Ilpo Järvinen
2024-02-16 14:39 ` Andy Shevchenko
2024-02-16 14:41 ` Ilpo Järvinen [this message]
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