linux-kernel - Re: [PATCH V3 2/2] tty: serial: meson: Added S4 SOC compatibility

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Date:   Fri, 22 Apr 2022 14:30:20 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Yu Tu <yu.tu@...ogic.com>, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH V3 2/2] tty: serial: meson: Added S4 SOC compatibility

On 22/04/2022 13:13, Yu Tu wrote:
> Make UART driver compatible with S4 SOC UART. Meanwhile, the S4 SOC
> UART uses 12MHz as the clock source for baud rate calculations.
> 
> Signed-off-by: Yu Tu <yu.tu@...ogic.com>
> ---
>   drivers/tty/serial/meson_uart.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
> index 58bd2723c004..c748e5dd5348 100644
> --- a/drivers/tty/serial/meson_uart.c
> +++ b/drivers/tty/serial/meson_uart.c
> @@ -790,11 +790,19 @@ static int meson_uart_remove(struct platform_device *pdev)
>   	return 0;
>   }
>   
> +static struct meson_uart_data s4_uart_data = {
> +	.has_xtal_div2 = true,
> +};
> +
>   static const struct of_device_id meson_uart_dt_match[] = {
>   	{ .compatible = "amlogic,meson6-uart" },
>   	{ .compatible = "amlogic,meson8-uart" },
>   	{ .compatible = "amlogic,meson8b-uart" },
>   	{ .compatible = "amlogic,meson-gx-uart" },
> +	{
> +		.compatible = "amlogic,meson-s4-uart",
> +		.data = (void *)&s4_uart_data,
> +	},
>   	{ /* sentinel */ },
>   };
>   MODULE_DEVICE_TABLE(of, meson_uart_dt_match);

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>