[PATCH v4 12/21] serial: support for 16550A serial ports on LP-8x4x

[One Thousand Gnomes]

> +	baud = uart_get_baud_rate(port, termios, old,
> +				  port->uartclk / 16 / 0xffff,
> +				  port->uartclk / 16);
> +	switch (baud) {
> +	case 2400:
> +		len |= 1;
> +		break;
> +	case 4800:
> +		len |= 2;
> +		break;
> +	case 19200:
> +		len |= 4;
> +		break;
> +	case 38400:
> +		len |= 5;
> +		break;
> +	case 57600:
> +		len |= 6;
> +		break;
> +	case 115200:
> +		len |= 7;
> +		break;
> +	case 9600:
> +	default:
> +		len |= 3;
> +		break;
> +	};

Some explanation of this would be useful - eg why is it set to 7 for
115200 baud and 3 for 115201 baud ?