linux-kernel - Re: [PATCH v2 4/4] nios2: dts: Fix tse

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Date:   Thu, 16 Feb 2023 09:54:02 -0600
From:   Dinh Nguyen <dinguyen@...nel.org>
To:     Janne Grunau <j@...nau.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mailing List <devicetree-spec@...r.kernel.org>,
        Kalle Valo <kvalo@...nel.org>, van Spriel <arend@...adcom.com>,
        Jérôme Pouiller <jerome.pouiller@...abs.com>,
        Ley Foon Tan <lftan@...era.com>,
        Chee Nouk Phoon <cnphoon@...era.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH v2 4/4] nios2: dts: Fix tse_mac "max-frame-size" property



On 2/12/23 06:16, Janne Grunau wrote:
> The given value of 1518 seems to refer to the layer 2 ethernet frame
> size without 802.1Q tag. Actual use of the "max-frame-size" including in
> the consumer of the "altr,tse-1.0" compatible is the MTU.
> 
> Fixes: 95acd4c7b69c ("nios2: Device tree support")
> Fixes: 61c610ec61bb ("nios2: Add Max10 device tree")
> Signed-off-by: Janne Grunau <j@...nau.net>
> ---
>   arch/nios2/boot/dts/10m50_devboard.dts | 2 +-
>   arch/nios2/boot/dts/3c120_devboard.dts | 2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/nios2/boot/dts/10m50_devboard.dts b/arch/nios2/boot/dts/10m50_devboard.dts
> index 56339bef3247..0e7e5b0dd685 100644
> --- a/arch/nios2/boot/dts/10m50_devboard.dts
> +++ b/arch/nios2/boot/dts/10m50_devboard.dts
> @@ -97,7 +97,7 @@ rgmii_0_eth_tse_0: ethernet@400 {
>   			rx-fifo-depth = <8192>;
>   			tx-fifo-depth = <8192>;
>   			address-bits = <48>;
> -			max-frame-size = <1518>;
> +			max-frame-size = <1500>;
>   			local-mac-address = [00 00 00 00 00 00];
>   			altr,has-supplementary-unicast;
>   			altr,enable-sup-addr = <1>;
> diff --git a/arch/nios2/boot/dts/3c120_devboard.dts b/arch/nios2/boot/dts/3c120_devboard.dts
> index d10fb81686c7..3ee316906379 100644
> --- a/arch/nios2/boot/dts/3c120_devboard.dts
> +++ b/arch/nios2/boot/dts/3c120_devboard.dts
> @@ -106,7 +106,7 @@ tse_mac: ethernet@...0 {
>   				interrupt-names = "rx_irq", "tx_irq";
>   				rx-fifo-depth = <8192>;
>   				tx-fifo-depth = <8192>;
> -				max-frame-size = <1518>;
> +				max-frame-size = <1500>;
>   				local-mac-address = [ 00 00 00 00 00 00 ];
>   				phy-mode = "rgmii-id";
>   				phy-handle = <&phy0>;
> 

Applied!

Thanks,
Dinh