[PATCH 1/2] clk: add lpc18xx creg clk driver

[Stephen Boyd]

On 02/17, Joachim Eastwood wrote:
> 
> For creg-clk it would probably work.
> 
> cgu would need to register most of clocks early since it needs to
> support whatever setup the bootloader throws at it. The only clocks
> that could be taken out is the base clocks (clk_onecell_data
> clk_base_data) except for one of them. But splitting this table would
> be a bad idea as hw clk numbers are used as indexes for easy look up.
> 
> Come to think of it; isn't splitting the clock table between a early
> init and platform driver going become a problem?
> At least the lookup in the driver or framework would become more complex(?)
> And won't you confuse the lookup?
> If the early driver register one clock table with
> of_clk_add_provider() and then sometime later the platform driver
> register another clock table, both using the same of_node. How is that
> suppose to work?

I believe that should work, although I haven't tested it. The
code looks until it finds a provider that matches the device node
and gives us a valid clk pointer. If we don't get a valid pointer
we keep looking for another provider until we exhaust all
providers.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project