Caesar, On Sun, Jul 27, 2014 at 7:00 AM, caesar <caesar.wang@xxxxxxxxxxxxxx> wrote: > /*I think will be show the faill log:-> > > * rockchip-pwm ff9301a0.pwm: can't request region for resource [mem > 0xff9301a0-0xff93019f] > */ > > pc->base = devm_ioremap_resource(dev, regs); Did you actually code this up and try it and get this error? I hadn't tried it but I researched other dts files and it looked as if there was one example that was doing this. ...but perhaps it wasn't actually doing the ioremap_resource on both ranges. I'd imagine that this is _probably_ equivalent to what Thierry was suggesting, so if it didn't work then maybe Thierry's won't work either? I don't have any other great suggestions other than doing two memory ranges for lcdc: lcdc@ff930000 { compatible = "rockchip,rk3288-lcdc"; reg = <0xff930000 0x1a0>, <0xff9301b0 0xfe50>; ... }; pwm@ff9301a0 { compatible = "rockchip,vop-pwm"; reg = <0xff9301a0 0x10>; ... }; ...but I am certainly nowhere near an expert on this stuff... -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html