Re: [PATCH v11 4/7] drm/sun4i: dsi: Handle bus clock explicitly

[Maxime Ripard <mripard@kernel.org>]

On Fri, Oct 25, 2019 at 11:26:22PM +0530, Jagan Teki wrote:
> Usage of clocks are varies between different Allwinner
> DSI controllers. Clocking in A33 would need bus and
> mod clocks where as A64 would need only bus clock.
>
> To support this kind of clocking structure variants
> in the same dsi driver,

There's no variance in the clock structure as far as the bus clock is
concerned.

> explicit handling of common clock would require since the A64
> doesn't need to mention the clock-names explicitly in dts since it
> support only one bus clock.
>
> Also pass clk_id NULL instead "bus" to regmap clock init function
> since the single clock variants no need to mention clock-names
> explicitly.

You don't need explicit clock handling. Passing NULL as the argument
in regmap_init_mmio_clk will make it use the first clock, which is the
bus clock.

Maxime