[PATCH v1 2/2] LRW UART: serial: add driver for the LRW UART

[Greg KH]

On Fri, Feb 13, 2026 at 05:33:34PM +0800, LiuQingtao wrote:
> From: Wenhong Liu <liu.wenhong35 at zte.com.cn>
> 
> This commit introduces a serial driver for the LRW UART controller
> 
> Key features implemented:
> - Support for FIFO mode (16-byte depth)
> - Baud rate configuration
> - Standard asynchronous communication formats:
>   * Data bits: 5, 6, 7, 8, 9 bits
>   * Parity: odd, even, fixed, none
>   * Stop bits: 1 or 2 bits
> - Hardware flow control (RTS/CTS)
> - Multiple interrupt reporting mechanisms
> 
> Signed-off-by: Wenhong Liu <liu.wenhong35 at zte.com.cn>
> Signed-off-by: Qingtao Liu <liu.qingtao2 at zte.com.cn>
> ---
>  MAINTAINERS                      |    3 +
>  drivers/tty/serial/Kconfig       |   33 +
>  drivers/tty/serial/Makefile      |    1 +
>  drivers/tty/serial/lrw_uart.c    | 2822 ++++++++++++++++++++++++++++++

This really is a totally new uart?  No relation to any existing devices
at all?  Why would that be created?

Anyway, this doesn't seem to build properly, how was it tested?

> --- a/include/uapi/linux/serial_core.h
> +++ b/include/uapi/linux/serial_core.h
> @@ -231,6 +231,9 @@
>  /* Sunplus UART */
>  #define PORT_SUNPLUS	123
>  
> +/* LRW UART */
> +#define PORT_LRW	124

Why is this id needed?

thanks,

greg k-h