On Mon, Jan 04, 2021 at 11:00:31PM +0800, Kent Gibson wrote:

On Mon, Jan 04, 2021 at 03:52:49PM +0200, Andy Shevchenko wrote:

quoted

On Mon, Jan 4, 2021 at 3:51 AM Kent Gibson [off-list ref] wrote:

quoted

On Sun, Jan 03, 2021 at 05:10:10PM +0200, Andy Shevchenko wrote:

...

quoted

In this example it is the 508:

# e.g. gpiochip0: GPIOs 508-511, parent: platform/gpio-mockup.0, gpio-mockup-A:

So I'll use that - unless it is unreliable for some reason?

debugfs is not an ABI and tomorrow this can be changed without notice.

I had a bad feeling that might be the case, and all my current solutions
use debugfs one way or another, so back to the drawing board on that one.

Hang on - the find approach that I was looking at previously only uses
/sys/devices/platform, so I'll revert to that one - and add handling for
multi-match.

Cheers,
Kent.