[PATCH] spi: s3c64xx: add support for exynos7 SPI controller

Padma Venkat padma.kvr at gmail.com
Sun Nov 9 20:50:27 PST 2014

Hi Mark,

On 11/7/14, Mark Brown <broonie at kernel.org> wrote:
> On Fri, Nov 07, 2014 at 02:01:57PM +0530, Padma Venkat wrote:
>> CS can also be controlled automatically by setting AUTO_N_MANUAL to 1
>> in CS_CFG. When it is auto CS automatically toggles between packet to
>> packet. NCS_TIME_COUNT in CS_CFG controls the inactive period. The
>> driver by default uses manual mode. But on exynos7 the manual mode is
>> removed.
> OK, but what's a packet here?

Packet is either 1 byte or 4 bytes size depends on width of the SPI channel.

>> I tested the driver with wm5110 codec.
> Did you try firmware downloads or something else that generates multiple
> transfers in a message?  Normal register writes will use a single
> transfer so I'd expect them to just work.

OK. I don't have provision to test on this board. I will try to test
on older boards by disabling manual mode.


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