Hi Ralf, On Mon, Feb 12, 2024 at 3:40 PM Ralf Schlatterbeck <rsc@xxxxxxxxxx> wrote: > On Mon, Feb 12, 2024 at 02:38:27PM +0100, Krzysztof Kozlowski wrote: > > On 12/02/2024 12:58, Ralf Schlatterbeck wrote: > > GPIO expanders and their usage is nothing specific to this device - > > other devices also might benefit of them. Or the SoCs which have enough > > of GPIOs... I really do not understand why do we need expander here and > > how does it help > > Can we then at least link the I/O Expander example to the docs of that > display? > I've documented my experience here: > https://blog.runtux.com/posts/2021/01/06/ Any chance you can update the DT overlays to use sugar syntax instead of raw fragments, target{,-path} properties, and __overlay__ subnodes? You can find examples in my DT overlay collection, e.g. https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/commit/?h=topic/renesas-overlays&id=3a41e34a2dd902c7bf74d11254a56190787252b6 > And at the time there were two out-of-tree implementations. Only two? ;-) Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
