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From: Eddie James <eajames-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Andy Shevchenko
	<andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Eddie James <eajames-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
Cc: linux-spi <linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Linux Kernel Mailing List
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Joel Stanley <joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org>,
	Andrew Jeffery <andrew-zrmu5oMJ5Fs@public.gmane.org>
Subject: Re: [PATCH v2] spi: Add FSI-attached SPI controller driver
Date: Mon, 24 Feb 2020 12:54:09 -0600	[thread overview]
Message-ID: <fab0fdf2-6ce7-7635-178e-9bd090d03dc0@linux.vnet.ibm.com> (raw)
In-Reply-To: <CAHp75VfHAS46-kMyg7Ky4jn7zmkht6wd9ayCfn+rrO0R6aNr6A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>


On 2/4/20 5:05 AM, Andy Shevchenko wrote:
> On Tue, Feb 4, 2020 at 12:30 AM Eddie James <eajames-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org> wrote:
>> There exists a set of SPI controllers on some POWER processors that may
>> be accessed through the FSI bus. Add a driver to traverse the FSI CFAM
>> engine that can access and drive the SPI controllers. This driver would
>> typically be used by a baseboard management controller (BMC).
>>
>> The SPI controllers operate by means of programming a sequencing engine
>> which automatically manages the usual SPI protocol buses. The driver
>> programs each transfer into the sequencer as various operations
>> specifying the slave chip and shifting data in and out on the lines.
> Some comments left unsettled in v1, thus applicable here.


I think I addressed all of Andy's comments on v1 now, if Andy agreed 
about leaving the byte shifting as-is in fsi_spi_data_in/out.


Thanks,

Eddie


>

  parent reply	other threads:[~2020-02-24 18:54 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-03 22:30 [PATCH v2] spi: Add FSI-attached SPI controller driver Eddie James
     [not found] ` <20200203223003.4567-1-eajames-tEXmvtCZX7AybS5Ee8rs3A@public.gmane.org>
2020-02-04 11:05   ` Andy Shevchenko
     [not found]     ` <CAHp75VfHAS46-kMyg7Ky4jn7zmkht6wd9ayCfn+rrO0R6aNr6A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-02-24 18:54       ` Eddie James [this message]
2020-02-25  5:08   ` Joel Stanley
2020-02-25  9:38     ` Andy Shevchenko
     [not found]     ` <CACPK8XdmdksFctYk96x46XJcxe3yQD3HfAzC8gdF_GXWJHeu2A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2020-02-25 19:45       ` Eddie James

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