linux-kernel - Re: [PATCH V2 1/2] tty: serial: meson: Add a 12MHz internal clock rate to calculate baud rate in order to meet the baud rate requirements of special BT modules

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Date:   Tue, 19 Apr 2022 11:21:32 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jiri Slaby <jirislaby@...nel.org>
Cc:     Yu Tu <yu.tu@...ogic.com>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        linux-amlogic <linux-amlogic@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH V2 1/2] tty: serial: meson: Add a 12MHz internal clock
 rate to calculate baud rate in order to meet the baud rate requirements of
 special BT modules

On Tue, Apr 19, 2022 at 10:38 AM Jiri Slaby <jirislaby@...nel.org> wrote:
> On 19. 04. 22, 9:29, Yu Tu wrote:
> > On 2022/4/18 20:09, Andy Shevchenko wrote:
> >> On Mon, Apr 18, 2022 at 8:50 AM Yu Tu <yu.tu@...ogic.com> wrote:

...

> >>> +struct meson_uart_data {
> >>> +       bool has_xtal_div2;
> >>
> >> I would prefer to see this as an unsigned int and with a less
> >> particular name, e.g. xtal_div would suffice.
> > I don't have a problem with your suggestion.Let's see What Neil has to say.
>
> Actually why uint provided it's a boolean value? Or do you mean to store
> the divisor directly in this member, Andy?

Yes I was thinking to provide the value and then always provide the
private data. In such cases we don't need an additional condition.

-- 
With Best Regards,
Andy Shevchenko