Hi Geert-san,
> From: Geert Uytterhoeven, Sent: Thursday, January 12, 2023 7:31 PM
>
> Hi Shimoda-san,
>
> On Thu, Jan 12, 2023 at 9:02 AM Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> > > From: Geert Uytterhoeven, Sent: Thursday, January 12, 2023 1:20 AM
> > > On Thu, Dec 22, 2022 at 10:33 AM Yoshihiro Shimoda
> > > <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote:
> > > > Enable UFS device for R-Car S4-8 Spider CPU board.
> > > >
> > > > Note that the conditions of RC21012 on the Spider are:
> > > > - OUT11 (for UFS30_REFCLK_V) is disabled as default.
> > > > - OUT11 is controlled by GPIO0 pin.
> > > > - The GPIO0 pin is inverted sense (low active) and pull-up enabled.
>
> > > > To output the clock, pin 4 of TCA9554 on the Spider board needs to
> > > > output low level so that using "gpio-gate-clock" for it.
> > >
> > > Does this mean the GPIO setup was the only missing part,
> > > and the i2c commands from [1] were not needed?
> >
> > You're correct.
> >
> > > I wanted to give this a try, but the remote Spider is offline.
>
> The remote Spider access issue was fixed, and the three
> UFS subdevices are detected fine.
> Hdparm says 280 MB/s (compared to 170 for eMMC).
>
> Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Thank you for the test!
I'll send v2 patch soon.
Best regards,
Yoshihiro Shimoda
> 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
