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Re: FDT syscon driver

Can you point me to an example?

On Sun, 1 Jul 2018, Robert Swindells wrote:

Jared McNeill <jmcneill%invisible.ca@localhost> wrote:
How to access it is dictated by the binding spec for your device. You need
some way to find the phandle. Two methods I have encountered:


The Odroid C2 doesn't use either of them, there are no cross references
and the devices are at the same level in the tree.

Lookup by device unit is not allowed because any relationship between
nodes must be defined in the DT. Device units are not predictable and it's
possible that a more specific driver could attach to that node, to
implement the syscon interface with additional functionality.

How about lookup by address ?

Plan B is to go back to a traditional config file and ignore the device

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