[PATCH 01/15] clk: sunxi-ng: Add check for minimal rate to NM PLLs

[Chen-Yu Tsai]

On Mon, Feb 26, 2018 at 5:38 PM, Maxime Ripard
<maxime.ripard at bootlin.com> wrote:
> Hi,
>
> On Sat, Feb 24, 2018 at 10:45:31PM +0100, Jernej Skrabec wrote:
>> Some NM PLLs doesn't work well when their output clock rate is set below
>> certain rate.
>>
>> Add support for that constrain.
>
> In such a case, you should round the rate to the minimum the clock can
> operate at, and not return an error.

That's true for round_rate. But what's the expected behavior of set_rate?
AFAIK we presume all users call round_rate before set_rate, but that doesn't
seem to be true all the time.

ChenYu