Re: [PATCH 2/2] arm64: dts: socfpga: Add dma-coherent to XGMAC nodes

[Dinh Nguyen <dinguyen@kernel.org>]

On 5/14/26 06:41, muhammad.nazim.amirul.nazle.asmade@altera.com wrote:
> From: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
> 
> The SMMU is enabled and transactions going through it are cache
> coherent. Add the dma-coherent property to the XGMAC nodes to prevent
> redundant cache flush/invalidate operations and potential stale data
> issues.
> 
> Signed-off-by: Nazim Amirul <muhammad.nazim.amirul.nazle.asmade@altera.com>
> ---
>   arch/arm64/boot/dts/intel/socfpga_agilex3_socdk.dts         | 1 +
>   arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts         | 1 +
>   arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_013b.dts    | 1 +
>   arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_modular.dts | 1 +
>   arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts    | 1 +
>   5 files changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex3_socdk.dts b/arch/arm64/boot/dts/intel/socfpga_agilex3_socdk.dts
> index 25e17df0cbdb..2061d301126e 100644
> --- a/arch/arm64/boot/dts/intel/socfpga_agilex3_socdk.dts
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex3_socdk.dts
> @@ -52,6 +52,7 @@ &gmac2 {
>   	phy-mode = "rgmii-id";
>   	phy-handle = <&emac2_phy0>;
>   	max-frame-size = <9000>;
> +	dma-coherent;
>   
This property should be in placed in the Agilex5 dtsi file.

Thanks,
Dinh