Dove clock support

[mkl@blackshift.org (Marc Kleine-Budde)]

On 06/18/2012 12:01 PM, Sebastian Hesselbarh wrote:
> On 06/18/2012 11:54 AM, Marc Kleine-Budde wrote:
>>> Also ge-phy has to be connected with ge-clk, too. But for dove this is
>>> a clk gate while kirkwood can shut it down somewhere else. I guess it
>>> can be handled like sata/pcie on kirkwood.
>>
>> The PHY is a clock gate so I'm handling it via:
>>> ge = dove_register_gate("ge0", CLOCK_GATING_GBE_BIT |
>>> CLOCK_GATING_GIGA_PHY_BIT);
>> So no gate_fn needed.

BTW: This code doesn't work, btw. It's bits, not masks.

> There is no fn needed for dove, but kirkwood will need one IIRC.
> Moreover, you could hook-up PHY-gate as a parent of corresponding
> clk-gate and they will be enabled/disabled simultaneously.

My solution doesn't wrk. We need either a custom fn or your proposed
parent-clock trick.

> But I'd prefer the driver to take care of clks _and_ PHYs.

You mean clk and PHY individually? I'm not that familiar with the new
clock framework. Is it possible without registering a dummy clock on the
systems with doesn't have individual clocks?

> One more: I suggest to clean the clk names of orion platforms,
> they are a mess ;) And IMHO clks should always have both strings
> set, e.g. kirkwood-i2s has an extclk input besides it on-chip clk.

I'm not (yet) deep into the different orion archs, can you elaborate more?

regards, Marc
Marc