Re: [PATCH] r8a77995 Draak SCIF0 LED and KEY Serdev prototype

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Hi Kieran,

On Mon, Nov 22, 2021 at 1:25 PM Kieran Bingham
<kieran.bingham@xxxxxxxxxxxxxxxx> wrote:
> What's the maximum speed of the SCIF? I could see this being further
> used to provide a software defined controller for RGB LEDs [0], which
> have often previously used SPI in a similar fashion to your proposal [1].

The problem with using a SCIF variant to drive WS2812B RGB LEDs won't
be maximum speed, but speed accuracy and precise control of bits.
I think you'd be better off trying this with MSIOF instead.

> https://github.com/msperl/rgbled-fb/blob/master/ws2812b-spi-fb.c
> https://www.arrow.com/en/research-and-events/articles/protocol-for-the-ws2812b-programmable-led

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



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