[PATCH v3] clk: imx: Add audio PLL debugfs for K-divider control

[Peng Fan]

On Thu, Jun 04, 2026 at 09:48:01PM +0800, Jacky Bai wrote:
>Add debugfs support for runtime tuning of the audio PLL K divider,
>which enables fine-grained frequency adjustments for audio PLL.
>This is used for:
>  - Audio clock calibration and testing
>  - Debugging audio synchronization issues
>
>Two debug interfaces are exported to userspace:
>  - delta_k: It is used to adjust the K divider in PLL based on small
>    steps
>  - pll_parameter: It is used for get PLL's current M-divider,
>    P-divider, S-divider & K-divider setting in PLL register
>
>Signed-off-by: Jacky Bai <ping.bai at nxp.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>