lkml.org 
[lkml]   [2015]   [Mar]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Using regmap_update_bits to update a write only register
On 03/06/2015 12:21 PM, Mark Brown wrote:
> On Thu, Mar 05, 2015 at 08:14:14PM +0200, Daniel Baluta wrote:
>> On Mar 5, 2015 7:54 PM, "Mark Brown" <broonie@kernel.org> wrote:
>
>>> Probably, or there's a bug. What should happen is that if the register
>>> default appeared successfully then the read will get statisfied from the
>>> cache in the manner you describe - presumably that's gone wrong somehow.
>>> Have you set num_reg_defaults? That's the obvious thing...
>
>> Did that. I will have a closer look. Thanks for the answer.
>
> OK, the other thing that springs to mind to check is that the register
> didn't somehow get marked as volatile.
>

There were some bugs in the past were non-readable register automatically
got marked as volatile, this has been fixed though a few months ago. Try to
make sure you use the latest upstream version of regmap.

- Lars


\
 
 \ /
  Last update: 2015-03-06 14:01    [W:0.101 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site