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From: Eddie James <>
To: Andy Shevchenko
	Eddie James <>
Cc: linux-spi <>,
	Linux Kernel Mailing List
	Mark Brown <>,
	Joel Stanley <>,
	Andrew Jeffery <>
Subject: Re: [PATCH v2] spi: Add FSI-attached SPI controller driver
Date: Mon, 24 Feb 2020 12:54:09 -0600	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 2/4/20 5:05 AM, Andy Shevchenko wrote:
> On Tue, Feb 4, 2020 at 12:30 AM Eddie James <> 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.




  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 Eddie James
     [not found] ` <>
2020-02-04 11:05   ` Andy Shevchenko
     [not found]     ` <>
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]     ` <>
2020-02-25 19:45       ` Eddie James

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