Re: [PATCH 4/7] ECHI Platform: Merge ppc-of EHCI driver into the ehci-platform driver

[Tony Prisk]

On 22/02/14 00:48, Mark Rutland wrote:
> [Adding Tony Prisk to Cc]
>
> On Fri, Feb 21, 2014 at 06:31:30AM +0000, Alistair Popple wrote:
> > Currently the ppc-of driver uses the compatibility string
> > "usb-ehci". This means platforms that use device-tree and implement an
> > EHCI compatible interface have to either use the ppc-of driver or add
> > a compatible line to the ehci-platform driver. It would be more
> > appropriate for the platform driver to be compatible with "usb-ehci"
> > as non-powerpc platforms are also beginning to utilise device-tree.
> >
> > This patch merges the device tree property parsing from ehci-ppc-of
> > into the platform driver and adds a "usb-ehci" compatibility
> > string. The existing ehci-ppc-of driver is removed and the 440EPX
> > specific quirks are added to the ehci-platform driver.
> >
> > Signed-off-by: Alistair Popple <alistair@xxxxxxxxxxxx>
> > ---
> >   drivers/usb/host/Kconfig         |    7 +-
> >   drivers/usb/host/ehci-hcd.c      |    5 -
> >   drivers/usb/host/ehci-platform.c |   87 +++++++++++++-
> >   drivers/usb/host/ehci-ppc-of.c   |  238 --------------------------------------
> >   4 files changed, 89 insertions(+), 248 deletions(-)
> >   delete mode 100644 drivers/usb/host/ehci-ppc-of.c
> Please use of_property_read_bool for these.
>
> This driver already handles "via,vt8500-ehci" and "wm,prizm-ehci" which
> aren't documented to handle these properties, but now gain support for
> them. It might be worth unifying the binding documents if there's
> nothing special about those two host controllers.
>
> We seem to have two binding documents for "via,vt8500-ehci", so some
> cleanup is definitely in order.
>
> Tony, you seem to have written both documents judging by 95e9fd10f06c
> and 8ad551d150e3. Do you have any issue with merging both of these into
> a common usb-ehci document?
......
> Cheers,
> Mark.

I'm not sure how we ended up with two bindings for the driver anyway. I 
think this was an error on my part somewhere.

None of the in-tree dts files use "wm,prizm-ehci".

I have no issue with merging all the documentation into a single 
usb-ehci binding.

Regards
Tony Prisk
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