[PATCH] PowerPC: usb ehci of_platform bindings for Sequoia 440EPx
vbarshak at ru.mvista.com
Sat Sep 15 00:31:32 EST 2007
Segher Boessenkool wrote:
>> EHCI OF bindings for PowerPC 440EPx Sequoia.
> Those aren't bindings, they are examples. Bindings are pieces
> of documentation that describe what device-specific properties
> mean what, what standard properties are required with what
> values, etc.
> Examples are good to have, of course.
> One thing you really need to document is what "ehci-be-desc"
> and friends mean. I can give you one comment already: for
> devices that are usually little-endian, but an implementation
> implements registers as big-endian, precedent is to show that
> in the device tree by including an (empty) "big-endian" property,
> rather than inventing new "compatible" values.
I was looking at the ohci-ppc-of driver that has "ohci-bigendian"
compatible string and enables both be-mmio and be-desc for the device in
this case. I just wanted to separate mmio and desc stuff for ehci, since
some devices need be-mmio only.
I'll use "big-endian" property instead of "ehci-be-mmio" compatible
value. That's a good point, thanks.
Do I have to add "sequoia usb ehci" description to
Do I also have to describe ehci-ppc-of stuff in general?
BTW, I see nothing about ohci-ppc-of there.
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