On Tue, Mar 31, 2015 at 10:31:20PM +0300, Aleksei Mamlin wrote: > > > + compatible = "goodix,gt911"; > > > + reg = <0x5d>; > > > + interrupt-parent = <&pio>; > > > + interrupts = <21 IRQ_TYPE_NONE>; /* EINT21 (PH21) */ > > > > Unfortunately, IRQ_TYPE_NONE is not a valid value for the GIC > > bindings. > > > > Hmm. Which value I must use in this case? IRQ type is set by the > touchscreen controller driver, so I think that value must be 0. Whatever the hardware is using. Presumably the same value than the driver sets. > > > > You're also not adding a pinctrl group for that pin? > > No, because it works fine with this DT nodes. It seems that I should > first configure pin to work in interrupt mode. Correct? You don't have to, since the pio driver will already take care of muxing it to the right function, but that will prevent any driver to call pinctrl_request on the same pin. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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