lkml.org 
[lkml]   [2015]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] spi: Setup the master controller driver before setting the chipselect
Date


On 10/16/2015 09:43 AM, Mark Brown wrote:
> On Fri, Oct 16, 2015 at 09:27:50AM -0500, Franklin S Cooper Jr. wrote:
>
>> Makes sense. How about something like this?
>> 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.
> Yes, that's a lot better - there's also the fact that if we assert chip
> select before we've got the pins in a good state we may cause the device
> to see signals that confuse it as we change.
Ok. I'll submit a rev2 with my updated commit message and incorporate
your suggestion also.



\
 
 \ /
  Last update: 2015-10-16 17:21    [W:0.490 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site