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    Subject[PATCH v2 03/14] arm64: dts: mediatek: mt7622: add support for coherent DMA
    Date
    It improves performance by eliminating the need for a cache flush on rx and tx

    Signed-off-by: Felix Fietkau <nbd@nbd.name>
    ---
    arch/arm64/boot/dts/mediatek/mt7622.dtsi | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
    index 6f8cb3ad1e84..a2257ec6d256 100644
    --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
    +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
    @@ -357,7 +357,7 @@ cci_control1: slave-if@4000 {
    };

    cci_control2: slave-if@5000 {
    - compatible = "arm,cci-400-ctrl-if";
    + compatible = "arm,cci-400-ctrl-if", "syscon";
    interface-type = "ace";
    reg = <0x5000 0x1000>;
    };
    @@ -945,6 +945,8 @@ eth: ethernet@1b100000 {
    power-domains = <&scpsys MT7622_POWER_DOMAIN_ETHSYS>;
    mediatek,ethsys = <&ethsys>;
    mediatek,sgmiisys = <&sgmiisys>;
    + mediatek,cci-control = <&cci_control2>;
    + dma-coherent;
    #address-cells = <1>;
    #size-cells = <0>;
    status = "disabled";
    --
    2.35.1
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