* Linux as a SPI slave? @ 2020-06-02 16:35 Joakim Tjernlund 2020-06-09 7:46 ` Geert Uytterhoeven 0 siblings, 1 reply; 2+ messages in thread From: Joakim Tjernlund @ 2020-06-02 16:35 UTC (permalink / raw) To: linux-spi@vger.kernel.org From what I can tell, the wast uses of SPI in Linux is as an SPI master. Is there any use cases as a SPI slave? I fear that the latency can make Linux unsuitable as a SPI slave, has anybody tried? Jocke ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Linux as a SPI slave? 2020-06-02 16:35 Linux as a SPI slave? Joakim Tjernlund @ 2020-06-09 7:46 ` Geert Uytterhoeven 0 siblings, 0 replies; 2+ messages in thread From: Geert Uytterhoeven @ 2020-06-09 7:46 UTC (permalink / raw) To: Joakim Tjernlund; +Cc: linux-spi@vger.kernel.org Hi Jocke, On Tue, Jun 2, 2020 at 6:38 PM Joakim Tjernlund <Joakim.Tjernlund@infinera.com> wrote: > From what I can tell, the wast uses of SPI in Linux is as an SPI master. Is there > any use cases as a SPI slave? It's out there: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/spi/Kconfig#n976 > I fear that the latency can make Linux unsuitable as a SPI slave, has anybody tried? Please check my FOSDEM presentation for limitations: https://archive.fosdem.org/2018/schedule/event/hwenablement_linux_as_spi_slave/ Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org 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 ^ permalink raw reply [flat|nested] 2+ messages in thread
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