Re: [PATCH v4 2/2] ns16550: add support for ASIX AX99100 PCIe Multi-I/O controller

[Jiaqing Zhao <Zhao.Jiaqing@xxxxxxx>]

Hi all,

Apologies for the noise. I forgot to remove the incorrect tocmd in git 
sendemail config and
accidentally included the maintainers in --to instead of --cc when sending this 
patchset.

Sorry for the unnecessary notification. I'll be more careful with my git 
send-email recipients
next time.

Thanks,
Jiaqing

On 2026-06-02 13:34, Jiaqing Zhao wrote:
> Add a PCI device table entry and matching parameter for the ASIX
> AX99100 PCIe to Multi-I/O controller [125b:9910]. Each port on the
> chip is a standalone PCI function, with UART registers on its I/O
> BAR0.
> 
> Signed-off-by: Jiaqing Zhao <Zhao.Jiaqing@xxxxxxx>
> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> ---
>  xen/drivers/char/ns16550.c | 15 +++++++++++++++
>  xen/include/xen/pci_ids.h  |  2 ++
>  2 files changed, 17 insertions(+)
> 
> diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char/ns16550.c
> index cf10a06a3d..26503070dc 100644
> --- a/xen/drivers/char/ns16550.c
> +++ b/xen/drivers/char/ns16550.c
> @@ -96,6 +96,7 @@ struct ns16550_config {
>          param_exar_xr17v358,
>          param_intel_lpss,
>          param_wch_ch382,
> +        param_asix,
>      } param;
>  };
>  
> @@ -872,6 +873,14 @@ static const struct ns16550_config_param __initconst 
> uart_param[] = {
>          .bar0 = 1,
>          .max_ports = 2,
>      },
> +    [param_asix] = {
> +        .base_baud = 115200,
> +        .reg_width = 1,
> +        .fifo_size = 256,
> +        .lsr_mask = UART_LSR_THRE,
> +        .bar0 = 1,
> +        .max_ports = 1,
> +    },
>  };
>  
>  static const struct ns16550_config __initconst uart_config[] =
> @@ -1212,6 +1221,12 @@ static const struct ns16550_config __initconst 
> uart_config[] =
>          .dev_id = 0x3253,
>          .param = param_wch_ch382
>      },
> +    /* ASIX AX99100 PCIe to Multi I/O Controller */
> +    {
> +        .vendor_id = PCI_VENDOR_ID_ASIX,
> +        .dev_id = 0x9910,
> +        .param = param_asix
> +    },
>  };
>  
>  static int __init
> diff --git a/xen/include/xen/pci_ids.h b/xen/include/xen/pci_ids.h
> index 15e938225c..fd424ef55d 100644
> --- a/xen/include/xen/pci_ids.h
> +++ b/xen/include/xen/pci_ids.h
> @@ -5,6 +5,8 @@
>  
>  #define PCI_VENDOR_ID_NVIDIA             0x10de
>  
> +#define PCI_VENDOR_ID_ASIX               0x125b
> +
>  #define PCI_VENDOR_ID_PERICOM            0x12d8
>  
>  #define PCI_VENDOR_ID_EXAR               0x13a8