[PATCH v3] powerpc: update crypto node definition and device tree instances
Segher Boessenkool
segher at kernel.crashing.org
Sat Jul 5 08:45:50 EST 2008
> +- compatible : Should contain entries for this and backward compatible
> + SEC versions, high to low, e.g., "fsl,sec2.1", "fsl,sec2.0"
First entry should state the _exact_ version of the device. "sec-N.M"
isn't good enough; there can be implementation bugs.
There can be more entries; you make it sound like each device tree
should list _all_ compatible devices, which isn't the case.
A device binding should not (and can not) say how "compatible"
should be used; instead, it should list what values of "compatible"
this binding applies to. You can give recommendations of course.
> +- interrupts : <a b> where a is the interrupt number and b is a
> + field that represents an encoding of the sense and level
> + information for the interrupt. This should be encoded based on
> + the information in section 2) depending on the type of interrupt
> + controller you have.
#interrupt-cells isn't always 2. Your device binding shouldn't describe
how interrupt encoding works (that's described in the imap recommended
practice, already); instead, it should describe which device interrupts
are listed here, and in what order. Sounds like you only have one
interrupt, so that should be easy ;-)
> +- interrupt-parent : the phandle for the interrupt controller that
> + services interrupts for this device.
"interrupt-parent" isn't a required property. It isn't part of this
device binding, either.
Segher
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