Re: [RFC v2 GPIO lines [was: GPIO User I/O]

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Thu, Jul 16, 2020 at 6:17 PM Rodolfo Giometti <giometti@xxxxxxxxxxxx> wrote:
> On 16/07/2020 15:38, Linus Walleij wrote:

...

> I see but this interface is not designed for such complex usage nor to compete
> with the current character interface! It is designed to allow boards
> manufactures to "describe" some I/O lines that are not used by any driver in the
> device tree,

Why are they not in firmware tables? Platform is a set of hardware
that makes it so.
If something is not in DT, then there is no possible way to know what
is that line?

Or in other words how does the OS know that the certain line is
connected to a relay?

> and that users may desire to manage in a very simple manner. Let's
> thing about relay lines, or just a locked/unlocked input line which can be
> easily polled.


-- 
With Best Regards,
Andy Shevchenko