Hi Andy, On Fri, Feb 23, 2024 at 1:36 PM Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > On Fri, Feb 23, 2024 at 9:52 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote: > > Note that most larger displays are not individual LEDs, but matrices > > of LEDs. Do we want to drive/scan them from software, using a > > gpio-7seg-matrix driver? > > LED matrices are the displays (like tinyDRM is for). TinyDRM is for rectangular matrices. Multiple 7-segment displays are usually multiplexed using a matrix, using 7 (or 8) lines shared by the corresponding segments of all displays, and one common line per display. https://embedded-lab.com/blog/wp-content/uploads/2011/03/Lab11_Circuit_SevenSegmentMultiplexing.jpg 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
