On Wed, Mar 7, 2018 at 8:54 AM, PrasannaKumar Muralidharan
<prasannatsmku...@gmail.com> wrote:
> Hi Rob,
> On 6 March 2018 at 19:25, Rob Herring <robh...@kernel.org> wrote:
>> On Tue, Mar 6, 2018 at 3:32 AM, James Hogan <jho...@kernel.org> wrote:
>>> On Mon, Sep 18, 2017 at 07:32:40PM +0530, PrasannaKumar Muralidharan wrote:
>>>> Add RNG node to jz4780 dtsi. This driver uses registers that are part of
>>>> the register set used by Ingenic CGU driver. Use regmap in RNG driver to
>>>> access its register. Create 'simple-bus' node, make CGU and RNG node as
>>>> child of it so that both the nodes are visible without changing CGU
>>>> driver code.
>> The goal should be to avoid changing the DT (because the h/w hasn't
>> changed), not avoid changing a driver.
> Please have a look at the discussion happened at
> https://patchwork.linux-mips.org/patch/14094/. Looks like there is a
> difference in though process between you and mips folks. I am not an
> expert in DT so please suggest me the correct way to go about this.

Those comments are correct too.

Simply, there is no reason you have to add a rng node to add an RNG
driver. The driver that probes the existing node can register both
clocks and as an RNG provider.


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