Hi Guennadi,
On Thursday 16 May 2013 09:57:20 Guennadi Liakhovetski wrote:
> On Wed, 15 May 2013, Laurent Pinchart wrote:
> > Add GPIO controller nodes to the r8a7790 core device tree.
> >
> > Signed-off-by: Laurent Pinchart
> > <laurent.pinchart+rene...@ideasonboard.com>
> > ---
> >
> > arch/arm/boot/dts/r8a7790.dtsi | 54 +++++++++++++++++++++++++++++++++++++
> > 1 file changed, 54 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/r8a7790.dtsi
> > b/arch/arm/boot/dts/r8a7790.dtsi index ee21061..b5fe51da 100644
> > --- a/arch/arm/boot/dts/r8a7790.dtsi
> > +++ b/arch/arm/boot/dts/r8a7790.dtsi
> > @@ -44,6 +44,60 @@
> > };
> > };
> >
> > + gpio0: gpio@ffc40000 {
> > + compatible = "renesas,gpio-r8a7790", "renesas,gpio-rcar";
> > + reg = <0xffc40000 0x2c>;
> > + interrupt-parent = <&gic>;
> > + interrupts = <0 4 0x4>;
> > + #gpio-cells = <2>;
> > + gpio-controller;
> > + };
>
> I'm testing your patches on Lager and GPIOs don't seem to get registered:
>
> / # ls /sys/class/gpio/
> export unexport
> / #
>
> And this is easy to trace back: sh_pfc_probe() calls
> sh_pfc_register_gpiochip(), where a check
>
> if (pfc->info->data_regs == NULL)
> return 0;
>
> successfully fails GPIO initialisation :) Is this known and there are
> still some pieces missing, or you weren't aware of this?
GPIOs are handled by the gpio-rcar driver on R8A7790, not by the sh-pfc
driver.
--
Regards,
Laurent Pinchart
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