On Thu, Oct 22, 2015 at 2:58 PM, Geert Uytterhoeven
<geert@xxxxxxxxxxxxxx> wrote:
> - Calling platform_driver_probe() from arch_initcall() is too late, as the
> IRQC is initialized first (it's located before the CPG in .dtsi).
> Hence the IRQC can't find it's Clock Domain, and its probe is deferred.
> IRQC will be reprobed later, but in the mean time the Ethernet PHY can't
> find its IRQ, as the of_mdio code uses irq_of_parse_and_map(), which
> plainly ignores EPROBE_DEFER :-(
> Nevertheless, Ethernet works...
To correct myself: renesas-irqc is initialized first because it uses
postcore_initcall().
The of_mdio issue on R-Car Gen2 boards can be worked around by changing that
to device_initcall(). That would cause a few more probe deferrals on R-Mobile
APE6 (r8a73a4), where IRQC is not only the external interrupt controller,
but also the parent interrupt controller of the PFC/GPIO combo.
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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