Re: Question on pre running clocks

[Arun KS]

+ linux-clk

On Fri, Oct 20, 2023 at 12:37 PM Arun KS <arunks.linux@xxxxxxxxx> wrote:
>
> Hello,
>
> Lets say there is a clock which is enabled by bootloaders and is pre
> running as linux boots.
> Is it mandatory for the client drivers to call clk_prepare_enable() on
> them to initialise the enable_count to 1?
>
> Or is there a way we can specify to the kernel that this clock is
> already enabled by bootloader and initialise the enable_count for this
> clock to 1.
>
> Because otherwise, clk_disable() prints a WARN() if a client driver
> uses clock handle where clk_prepare_enable() is not called.
>
> I grep through the code, but could find any details. Appreciate any pointers.
>
> Regards,
> Arun