RE: [PATCH v2 tty-next 1/3] 8250: microchip: pci1xxxx: Add driver for quad-uart support.

[Tharunkumar.Pasumarthi]

> -----Original Message-----
> From: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
> Sent: Monday, October 3, 2022 2:53 PM
> To: Kumaravel Thiagarajan - I21417
> <Kumaravel.Thiagarajan@xxxxxxxxxxxxx>
> Subject: Re: [PATCH v2 tty-next 1/3] 8250: microchip: pci1xxxx: Add driver for
> quad-uart support.
> 
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> > +       [PORT_MCHP16550A] = {
> > +               .name           = "MCHP16550A",
> > +               .fifo_size      = 256,
> > +               .tx_loadsz      = 256,
> > +               .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01,
> > +               .rxtrig_bytes   = {2, 66, 130, 194},
> > +               .flags          = UART_CAP_FIFO,
> > +       },
> 
> Can you assign this in ->setup() or so instead of adding a new port type?

Hi Andy,
If I understand correctly, you suggest doing something like this inside pci1xxxx_setup() API:

pci1xxxx_setup(.., uart_8250_port *port, ..) {
..
port->port.fifosize = 256;
port->tx_loadsz = 256;
port->capabilities = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01;
..
}

instead of adding new port type PORT_MCHP16550A. But, if I do this, I cannot use sysfs interface for updating rx_trig_bytes right?
Kindly correct me if my understanding is wrong.

Thanks,
Tharun Kumar P