Hi PrasannaKumar, On Sunday, 20 August 2017 09:12:12 PDT PrasannaKumar Muralidharan wrote: > > Could you instead perhaps: > > - Just add "syscon" as a second compatible string to the CGU node in the > > > > device tree, but otherwise leave it as-is without the extra > > cgu_registers > > node. > > > > - Have your RNG device node as a child of the CGU node, which should let > > it > > > > pick up the regmap via syscon_node_to_regmap() as it already does. > > > > - Leave the CGU driver as-is, so it can continue accessing memory > > directly > > > > rather than via regmap. > > As per my understanding, CGU driver and syscon will map the same > register set. Is that fine?
That should work fine.
It's only risky if you have 2 drivers using the same registers in ways that
might race with one another or clobber one another's data. In this case each
of the 2 drivers is using a different subset of registers that just happen to
be in the same address range, so there shouldn't be an issue.
Thanks,
Paul
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