[PATCH v4 3/3] ARM: imx6: Fix procedure to switch the parent of LDB_DI_CLK

[Fabio Estevam]

Hi Philipp,

On Wed, Mar 30, 2016 at 1:18 PM, Philipp Zabel <p.zabel at pengutronix.de> wrote:

>> > 1. NXP 3.10 kernel switches clock source as follows:
>> > current_parent -> 7 -> 4 -> new_parent
>>
>> Yes, we need to follow this requirement.
>
> Thanks. Does anybody know why?

The SoC folks say this needs to be done to make sure the glitch is not
propagated.

> (Does this work for current_parent == 4 and new_parent != 0)?

They say it works for all combinations.

> Is this also true for starting values other than 3?

Yes.