Re: [PATCH 0/6] net: cpsw: Support for am335x chip MACIDs

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On Wed, Dec 18, 2013 at 10:30:55PM +0530, Mugunthan V N wrote:
> On Wednesday 18 December 2013 10:17 PM, Markus Pargmann wrote:
> > Hi,
> >
> > This series introduces a driver to read and use the MACIDs stored in the am335x
> > control module. These are read-only registers for a unique MACID. At the moment
> > the MACIDs are generated randomly or they are set by the bootloader.
> >
> > A device node is added in am33xx dtsi and used by the cpsw slaves in the bone
> > board files.
> >
> > Regards,
> >
> > Markus
> >
> >
> > Markus Pargmann (6):
> >   DT doc: net: cpsw mac-address is optional
> >   net: cpsw: header, Add missing include
> >   net: cpsw: Add control-module macid driver
> >   net: cpsw: Use cpsw-ctrl-macid driver
> >   arm: dts: am33xx, Add device node for cpsw-ctrl-macid
> >   arm: dts: am335x beagle bone use processor macids
> >
> >  .../devicetree/bindings/net/cpsw-ctrl-macid.txt    |  31 +++++
> >  Documentation/devicetree/bindings/net/cpsw.txt     |   7 +-
> >  arch/arm/boot/dts/am335x-bone.dts                  |   8 ++
> >  arch/arm/boot/dts/am335x-boneblack.dts             |   8 ++
> >  arch/arm/boot/dts/am33xx.dtsi                      |   7 ++
> >  drivers/net/ethernet/ti/Kconfig                    |   8 ++
> >  drivers/net/ethernet/ti/Makefile                   |   1 +
> >  drivers/net/ethernet/ti/cpsw-ctrl-macid.c          | 138 +++++++++++++++++++++
> >  drivers/net/ethernet/ti/cpsw.c                     |  18 ++-
> >  drivers/net/ethernet/ti/cpsw.h                     |   3 +
> >  10 files changed, 224 insertions(+), 5 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/net/cpsw-ctrl-macid.txt
> >  create mode 100644 drivers/net/ethernet/ti/cpsw-ctrl-macid.c
> >
> Mac ID is to be filled by U-Boot and this kind of approach is already
> rejected in linux-omap list.
> 
> If proper ethaddr/eth*addr is populated in U-boot environment variable
> then mac-address dt property in ethernet* device nodes will be populated
> before boot kernel in U-boot. So I don't think this patch series is
> required.

but will u-boot read MACID from control module ?

-- 
balbi

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