media: imx355: Add support for 24 MHz external clock

The IMX355 sensor supports multiple external clock frequencies,
including 19.2 MHz and 24 MHz. The driver currently supports only
fixed 19.2 MHz input clock.

Refactor the clock handling to make the PLL configuration dependent
on the external clock frequency and add support for 24 MHz. Introduce
a table of clock parameter sets and program the corresponding EXTCLK
frequency and PLL multipliers to maintain consistent internal VCO
frequencies across supported inputs.

The PLL settings are adjusted so that OP VCO remains at 720 MHz

This preserves existing timing characteristics while allowing systems
using a 24 MHz clock to operate correctly.

No functional change for existing 19.2 MHz users.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>

0 files changed, 0 insertions, 0 deletions