From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: John Garry <john.garry@huawei.com>,
gregkh@linuxfoundation.org, slaby@suse.com,
p.zabel@pengutronix.de, heiko@sntech.de, ed.blake@sondrel.com,
jhogan@kernel.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
linuxarm@huawei.com
Subject: Re: [RFC PATCH 0/2] serial: 8250_dw: IO space + polling mode support
Date: Fri, 23 Feb 2018 12:30:01 +0200 [thread overview]
Message-ID: <1519381801.10722.103.camel@linux.intel.com> (raw)
In-Reply-To: <1519324923-196857-1-git-send-email-john.garry@huawei.com>
On Fri, 2018-02-23 at 02:42 +0800, John Garry wrote:
> There is a requirement
Where?
> for supporting an 8250-compatible UART with
> the following profile/features:
> - platform device
> - polling mode (i.e. no interrupt support)
> - ACPI FW
Elaborate this one, please.
> - IO port iotype
> - 16550-compatible
>
> For OF, we have 8250_of.c, and for PNP device we have 8250_pnp.c
> drivers. However there does not seem to any driver satisfying
> the above requirements. So this RFC is to find opinion on
> modifying the Synopsys DW 8250_dw.c driver to support these
> generic features.
Synopsys 8250 is a particular case of platform drivers. It doesn't
satisfy "8250-compatible UART" requirement.
> With patch 2/2, we're relaxing the interrupt support requirement.
> As I mentioned in the commit log, the 8250_of.c driver seems to
> ignore the dt bindings, and I do the same.
--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy
next prev parent reply other threads:[~2018-02-23 10:30 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-22 18:42 [RFC PATCH 0/2] serial: 8250_dw: IO space + polling mode support John Garry
2018-02-22 18:42 ` [RFC PATCH 1/2] serial: 8250_dw: add IO space support John Garry
2018-02-22 18:42 ` [RFC PATCH 2/2] serial: 8250_dw: support polling mode John Garry
2018-02-23 17:35 ` Andy Shevchenko
2018-02-26 10:54 ` John Garry
2018-02-23 10:30 ` Andy Shevchenko [this message]
2018-02-23 11:02 ` [RFC PATCH 0/2] serial: 8250_dw: IO space + polling mode support John Garry
2018-02-23 17:31 ` Andy Shevchenko
2018-02-26 9:33 ` John Garry
2018-02-26 9:53 ` Andy Shevchenko
2018-02-26 10:45 ` John Garry
2018-02-26 11:28 ` Andy Shevchenko
2018-02-26 11:56 ` John Garry
2018-02-26 12:21 ` Andy Shevchenko
2018-02-26 12:27 ` Andy Shevchenko
2018-02-26 13:15 ` John Garry
2018-02-26 15:02 ` Andy Shevchenko
2018-02-26 15:07 ` John Garry
2018-04-12 16:31 ` John Garry
2018-02-26 12:37 ` John Garry
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