Linus, Thank you for your comments. See below... Stephen: sorry for missing you earlier! :( On Wed, May 15, 2013 at 11:29 AM, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > But please use the preprocessor to provide symbolic names for > the configurations. See for example these two patches from > J-C: > http://www.mail-archive.com/devicetree-discuss@xxxxxxxxxxxxxxxx/msg32164.html Ah, that does look nice! This probably needs to be addressed in a separate patch to cleanup all of the samsung pinctrl devicetrees. > I don't think the idea with device tree is to write as compact trees > as possible, but as expressive and exact yet abstract trees as > possible for OS independence. The compactness was one benefit, but also it was about trying to avoid excessive duplication of information. I found it awkward that I needed to list that my interrupt was "gpx1-2" in two different ways. I would find it just as good if I could express things like this (for interrupts): pinctrl@11400000 { cyapa_irq: cyapa-irq { samsung,pins = "gpx1-2"; samsung,pin-function = <0xf>; samsung,pin-pud = <0>; samsung,pin-drv = <0>; interrupt-controller; #interrupt-cells = <1>; }; }; trackpad { reg = <0x67>; compatible = "cypress,cyapa"; interrupt-parent = <&cyapa_irq>; interrupts = <0>; wakeup-source; }; In this case I'm not saying that my interrupt parent is "gpx1-2" in two separate places that could diverge. I could come up with a similar example for GPIOs. -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html