[PATCH 5/8] serial: imx: add $global.bootm.earlycon fixup support

[Sascha Hauer]

On Mon, May 23, 2022 at 11:25:23AM +0200, Ahmad Fatoum wrote:
> Allow barebox compute a suitable earlycon parameter.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
> ---
>  drivers/serial/serial_imx.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/serial/serial_imx.c b/drivers/serial/serial_imx.c
> index 6a933c930e9b..cf9c3f02a7ef 100644
> --- a/drivers/serial/serial_imx.c
> +++ b/drivers/serial/serial_imx.c
> @@ -234,6 +234,8 @@ static int imx_serial_probe(struct device_d *dev)
>  	cdev->flush = imx_serial_flush;
>  	cdev->setbrg = imx_serial_setbaudrate;
>  	cdev->linux_console_name = "ttymxc";
> +	cdev->linux_earlycon_name = "ec_imx6q";

"ec_imx6q" sounds wrong for the older i.MX SoCs. I don't know how
OF_EARLYCON_DECLARE works, but this:

OF_EARLYCON_DECLARE(ec_imx6q, "fsl,imx6q-uart", imx_console_early_setup);
OF_EARLYCON_DECLARE(ec_imx21, "fsl,imx21-uart", imx_console_early_setup);

looks like it matches a device tree compatible entry. For the older SoCs
you should likely use "ec_imx21".

Anyway, plain "earlycon" just works, why the hassle?

Sascha

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