[PATCH v7 2/4] serial: 8250_dw: build Renesas RZN1 CPR value from DW_UART_CPR_* definitions

[Andy Shevchenko]

On Wed, Apr 29, 2026 at 05:13:26PM +0800, Jia Wang wrote:
> Replace the magic CPR value for Renesas RZ/N1 with a composition using
> DW_UART_CPR_* bit/field definitions and FIELD_PREP_CONST().
> 
> Introduce a helper macro to convert a FIFO size (bytes) into the CPR
> FIFO_MODE field value, with BUILD_BUG_ON_ZERO() checks for alignment and
> bounds. Use it to replace the literal FIFO_MODE values in the RZN1.

Reviewed-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>

-- 
With Best Regards,
Andy Shevchenko