linux-kernel - Re: [PATCH v2] spi: Setup the master controller driver before setting the chipselect

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Message-ID: <CAHp75VchYayRsvsjPoM9YphcjMajfvYuDrLcLrTiADVn8LU=8A@mail.gmail.com>
Date:	Fri, 16 Oct 2015 18:55:21 +0300
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	"Franklin S Cooper Jr." <fcooper@...com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-spi@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Sekhar Nori <nsekhar@...com>, ssantosh@...nel.org,
	"Ivan T. Ivanov" <iivanov@...sol.com>, m-karicheri2@...com,
	"Ivan T. Ivanov" <iivanov.xz@...il.com>,
	Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
	hkallweit1@...il.com
Subject: Re: [PATCH v2] spi: Setup the master controller driver before setting
 the chipselect

On Fri, Oct 16, 2015 at 6:47 PM, Franklin S Cooper Jr. <fcooper@...com> wrote:
>
>
> On 10/16/2015 10:45 AM, Andy Shevchenko wrote:
>> On Fri, Oct 16, 2015 at 6:29 PM, Franklin S Cooper Jr <fcooper@...com> wrote:
>>> SPI controllers may need to be properly setup before chip selects
>>> can be used. Therefore, wait until the spi controller has a chance
>>> to perform their setup procedure before trying to use the chip
>>> select.
>>>
>>> This also insures that the chip selects pins are in a good
>>> state before asseting them which otherwise may cause confusion.
>>>
>>> Signed-off-by: Franklin S Cooper Jr <fcooper@...com>
>> Does it mean I have to test it again?
> Oops sorry. No the patch hasn't changed. I can shoot a v3 with your tested by included.

Whatever Mark prefers.


-- 
With Best Regards,
Andy Shevchenko
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