[PATCH v9 13/15] serial: 8250_dw: add Ambarella CV75 quirks

[Greg Kroah-Hartman]

On Thu, Oct 01, 2026 at 08:41:02PM +0800, Long Zhao via B4 Relay wrote:
> From: Long Zhao <longzhao at ambarella.com>
> 
> The Ambarella CV75 UART is Ambarella IP, not a Synopsys DesignWare
> licensed block. At the register level it is close enough to DW APB UART
> that a full custom UART driver is unnecessary: reuse 8250_dw with a
> small platform quirk.
> 
> Quirks:
> - keep IER ETOI (bit 5) set for RX timeout behaviour
> - skip set_rate; baud clock is managed outside the UART block
> 
> Reviewed-by: Linus Walleij <linusw at kernel.org>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
> Signed-off-by: Long Zhao <longzhao at ambarella.com>
> ---
>  drivers/tty/serial/8250/8250_dw.c | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)

When you submit lots of different subsystem patches all in one series,
it's hard, if not impossible, for subsystem maintainers to take them :(

thanks,

greg k-h