linux-kernel - Re: [PATCH 10/12] serial: 8250

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Date:   Fri, 15 Sep 2023 09:33:14 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Wang Chen <unicornxw@...il.com>, linux-riscv@...ts.infradead.org,
        conor@...nel.org, aou@...s.berkeley.edu,
        krzysztof.kozlowski+dt@...aro.org, palmer@...belt.com,
        paul.walmsley@...ive.com, robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        jszhang@...nel.org, guoren@...nel.org, chao.wei@...hgo.com,
        xiaoguang.xing@...hgo.com,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>
Subject: Re: [PATCH 10/12] serial: 8250_dw: Add Sophgo SG2042 support

On 15/09/2023 09:25, Wang Chen wrote:
> From: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> 
> Add quirk to skip setting the input clock rate for the uarts on the
> Sophgo SG2042 SoC similar to the StarFive JH7100.
> 
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>

Missing SoB.

> ---
>  drivers/tty/serial/8250/8250_dw.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
> index f4cafca1a7da..6c344877a07f 100644
> --- a/drivers/tty/serial/8250/8250_dw.c
> +++ b/drivers/tty/serial/8250/8250_dw.c
> @@ -770,7 +770,7 @@ static const struct dw8250_platform_data dw8250_renesas_rzn1_data = {
>  	.quirks = DW_UART_QUIRK_IS_DMA_FC,
>  };
>  
> -static const struct dw8250_platform_data dw8250_starfive_jh7100_data = {
> +static const struct dw8250_platform_data dw8250_skip_set_rate_data = {

Why? What is wrong with old name?

>  	.usr_reg = DW_UART_USR,
>  	.quirks = DW_UART_QUIRK_SKIP_SET_RATE,
>  };
> @@ -780,7 +780,8 @@ static const struct of_device_id dw8250_of_match[] = {
>  	{ .compatible = "cavium,octeon-3860-uart", .data = &dw8250_octeon_3860_data },
>  	{ .compatible = "marvell,armada-38x-uart", .data = &dw8250_armada_38x_data },
>  	{ .compatible = "renesas,rzn1-uart", .data = &dw8250_renesas_rzn1_data },
> -	{ .compatible = "starfive,jh7100-uart", .data = &dw8250_starfive_jh7100_data },
> +	{ .compatible = "sophgo,sg2042-uart", .data = &dw8250_skip_set_rate_data },
> +	{ .compatible = "starfive,jh7100-uart", .data = &dw8250_skip_set_rate_data },

So devices are fully compatible? Then use compatibility and drop this
patch entirely.


Best regards,
Krzysztof