On Tue, Nov 15, 2016 at 4:45 PM, Geert Uytterhoeven
<geert@xxxxxxxxxxxxxx> wrote:
> i2c4 shares pins with vin0. Hence enabling the former breaks the latter:
>
> sh-pfc e6060000.pfc: pin GP_4_13 already requested by
> e6520000.i2c; cannot claim for e6ef0000.video
> sh-pfc e6060000.pfc: pin-141 (e6ef0000.video) status -22
> sh-pfc e6060000.pfc: could not request pin 141 (GP_4_13) from
> group vin0_data24 on device sh-pfc
> rcar-vin e6ef0000.video: Error applying setting, reverse things back
> rcar-vin: probe of e6ef0000.video failed with error -22
>
> There may be similar issues on other boards. Haven't checked yet.
I inspected the DTSes for Koelsch, Lager, Gose, and Alt, looking for
conflicting configurations of pins:
- Lager:
- i2c1 and iic1 share GP1_16 and GP1_17, but that is handled through
i2c-demux-pinctrl
- usb0_ovc_vbus and usb0 share GP5_19, but that is probably OK, as these
groups are configured for the same function?
- Koelsch: i2c4 and and vin0_data24 share pins GP4_13 and GP4_14
(vin0_data8 would be OK)
- Gose: Same issue as Koelsch.
- Alt: No conflicts.
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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