lkml.org 
[lkml]   [2017]   [Jan]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 00/13] Ingenic JZ4740 / JZ4780 pinctrl driver
On Thu, Jan 19, 2017 at 12:19 PM, Paul Cercueil <paul@crapouillou.net> wrote:

> The problem with pinctrl and PWM, is that the pinctrl API works by "states".
> A default state, sleep state, and basically any custom state that the
> devicetree
> provides. This works well until you need to control individually each pin;
> with
> 8 pins, you would need 2^8 states, each one corresponding to a given
> configuration.

I do not really understand, do you really use all 2^8 states in a given
system?

The pin control states are to be used for practical situations, not
for all theoretical situations.

You should define in your device tree the states that your
particular system will use. Not all possible states on all possible
systems.

Yours,
Linus Walleij

\
 
 \ /
  Last update: 2017-01-20 09:40    [W:0.305 / U:0.400 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site