On Fri, Sep 07, 2018 at 10:01:03AM +0200, Arnd Bergmann wrote: > On Fri, Sep 7, 2018 at 7:17 AM Guo Ren <ren_guo@xxxxxxxxx> wrote: > > > > On Thu, Sep 06, 2018 at 04:16:30PM +0200, Arnd Bergmann wrote: > > > On Wed, Sep 5, 2018 at 2:08 PM Guo Ren <ren_guo@xxxxxxxxx> wrote: > > > > > > > diff --git a/arch/csky/boot/dts/qemu.dts b/arch/csky/boot/dts/qemu.dts > > > > new file mode 100644 > > > > index 0000000..d36e4cd > > > > --- /dev/null > > > > +++ b/arch/csky/boot/dts/qemu.dts > > > > @@ -0,0 +1,77 @@ > > > > +/dts-v1/; > > > > +/ { > > > > + compatible = "csky,qemu"; > > > > + #address-cells = <1>; > > > > + #size-cells = <1>; > > > > + interrupt-parent = <&intc>; > > > > > > Ideally, qemu would supply a dtb file that matches the current configuration, > > > as we do for instance on the ARM 'virt' machine. This allows you > > > much more flexibility in running all kinds of options, as well as extending > > > qemu later with new features. > > So, I should remove qemu.dts in next version patch? > > It's up to you really. If you won't have a version of qemu that can do this > by itself, it may make sense to keep it around for a while. You might > want to include the version of your current qemu port is based on > qemu-2.x but not upstream, you could include a qemu-2.x.dts file > here, and have the future 3.x port provide its own. Ok, thx for the tips. Guo Ren