linux-kernel - Re: [PATCH] spi: pxa2xx: Only claim CS GPIOs when the slave device is created

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Message-ID: <20170710120913.g35ftcbs7pngrtsm@sirena.org.uk>
Date:   Mon, 10 Jul 2017 13:09:14 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jan Kiszka <jan.kiszka@....de>, Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] spi: pxa2xx: Only claim CS GPIOs when the slave device
 is created

On Sun, Jul 09, 2017 at 12:48:10AM +0300, Andy Shevchenko wrote:
> On Sat, Jul 8, 2017 at 11:41 AM, Jan Kiszka <jan.kiszka@....de> wrote:

> > Tested on the IOT2000 where the second SPI bus is connected to an
> > Arduino-compatible connector and multiplexed between SPI, GPIO and PWM
> > usage.

> Can we first switch the driver to use GPIO descriptors instead of
> plain integers?

Only if you also convert the SPI core to use descriptors, Chris Packham
was looking at that but he needed update the ep93xx drivers among others
and getting reviewers was hard.

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