On Do, 2016-06-30 at 15:14 +0800, HS Liao wrote: [...] > +Required properties: > +- compatible: Must be "mediatek,mt8173-gce" > +- reg: Address range of the GCE unit > +- interrupts: The interrupt signal from the GCE block > +- clock: Clocks according to the common clock binding > +- clock-names: Must be "gce" to stand for GCE clock > +- #mbox-cells: Should be 1 [...] > + #mbox-cells = <1>; [...] > + mediatek,gce = <&gce>; > + mboxes = <&gce 0 1 /* main display with merging wfe */ > + &gce 1 1>; /* sub display with merging wfe */ It seems that you use two cells instead of one as you declared above. This should be consistent. Also, why do you need an explicit phandle to the gce if you already use mailboxes? Best regards, Jan Lübbe -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html