[PATCH RFC/RFT 1/6] clk: core: add support for generic big endian accesses

[Stephen Boyd]

Quoting Jonas Gorski (2019-04-08 03:20:34)
> Add a generic flag to mark a clock as big endian register based, and add
> accessors following these.

I like the idea of getting rid of clk_readl() and clk_writel(), but I'd
rather see that this flag is per-basic clk type instead of global to all
clks. Mostly because I don't see it as a clk property that's applicable
in general. So we would either have a flag for dividers and gates that
goes into the respective CLK_{GATE,DIVIDER}_* flag space, or some
wrapper functions like:

	clk_gate_register_be()
	clk_divider_register_be()

that passes this information through to the basic clk types somehow.
Then if there's no other user left of clk_readl() and clk_writel() I'd
just slam in a patch to all the files that use it to convert them to
readl() and writel(). After that, it would be great to drop the io.h
include from clk-provider.h and push that include out to any code that's
relying on it implicitly.