linux-kernel - Re: [PATCH] tty: serial: meson: Add a earlycon for the S4 SoC

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Message-ID: <CAJX_Q+0AWcY7SySsdtVn=7xE8H0YtLBfN2XrKSOZMGB-60NRhg@mail.gmail.com>
Date:   Mon, 28 Aug 2023 13:26:59 +0100
From:   Lucas Tanure <tanure@...ux.com>
To:     neil.armstrong@...aro.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH] tty: serial: meson: Add a earlycon for the S4 SoC

On Mon, Aug 28, 2023 at 1:16 PM Neil Armstrong
<neil.armstrong@...aro.org> wrote:
>
> Hi,
>
> On 28/08/2023 14:10, Lucas Tanure wrote:
> > The new Amlogic S4 SoC does not have a always-on uart, so add
> > OF_EARLYCON_DECLARE for it.
> >
> > Signed-off-by: Lucas Tanure <tanure@...ux.com>
> > ---
> >   drivers/tty/serial/meson_uart.c | 4 ++--
> >   1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
> > index 790d910dafa5..8dfaa260e545 100644
> > --- a/drivers/tty/serial/meson_uart.c
> > +++ b/drivers/tty/serial/meson_uart.c
> > @@ -646,8 +646,8 @@ meson_serial_early_console_setup(struct earlycon_device *device, const char *opt
> >       return 0;
> >   }
> >
> > -OF_EARLYCON_DECLARE(meson, "amlogic,meson-ao-uart",
> > -                 meson_serial_early_console_setup);
> > +OF_EARLYCON_DECLARE(meson, "amlogic,meson-ao-uart", meson_serial_early_console_setup);
> > +OF_EARLYCON_DECLARE(meson, "amlogic,meson-s4-uart", meson_serial_early_console_setup);
>
> Not sure why you would change both lines, and where's the t7 entry ?
ok, but we don't need t7, right? T7 will use S4 compatible line.
>
> Neil
>
> >
> >   #define MESON_SERIAL_CONSOLE_PTR(_devname) (&meson_serial_console_##_devname)
> >   #else
>