On Wed, 11 Dec 2013 15:17:37 +0100, Michal Simek <[email protected]> wrote:
> On 12/11/2013 12:15 PM, Grant Likely wrote:
> > device_type is deprecated and the kernel doesn't require it in most
> > cases. The only exceptions for flat tree users are the "gianfar",
> > "ucc_geth" and "ibm,emac" bindings, and arguably that requirement could
> > be relaxed for ucc_geth and ibm,emac (that is a task for separate
> > patches though).
> >
> > This patch removes references to device_type="network" from the binding
> > documentation where possible and removes the properties from ARM and
> > microblaze dts files. This patch does not modify the powerpc .dts files
> > since there are a much larger number of them affected and I think the
> > ucc_geth, ibm,emac and gianfar users should be addressed before clearing
> > out the references to reduce the chance of breakage.
> >
> > Signed-off-by: Grant Likely <[email protected]>
> > Cc: Rob Herring <[email protected]>
> > Cc: Pawel Moll <[email protected]>
> > Cc: Mark Rutland <[email protected]>
> > Cc: Ian Campbell <[email protected]>
> > Cc: Kumar Gala <[email protected]>
> > Cc: Michal Simek <[email protected]>
> > ---
> > Documentation/devicetree/bindings/marvell.txt | 2 --
> > Documentation/devicetree/bindings/net/marvell-orion-net.txt | 2 --
> > Documentation/devicetree/bindings/powerpc/fsl/cpm_qe/network.txt | 1 -
> > arch/arm/boot/dts/dove.dtsi | 1 -
> > arch/arm/boot/dts/kirkwood.dtsi | 2 --
> > arch/arm/boot/dts/orion5x.dtsi | 1 -
> > arch/microblaze/platform/generic/system.dts | 1 -
> > 7 files changed, 10 deletions(-)
>
> Acked-by: Michal Simek <[email protected]>
>
> btw: what device types can be used?
> I am having them for serial, watchdog, pci, memory, cpu, ethernet-phy
> (will remove network from our generator).
>
> when I grep kernel there are others types like soc, ipmi and a lot for powerpc.
There are a number of users, but most of them are bogus since they can
just as easily be expressed via a compatible value. There are a few
cases where they are required. PCI bus nodes, memory nodes, and cpus for
example. General rule here is avoid device_type entirely unless some
core infrastructure of the kernel requires it.
g.