target/linux/generic/backport-5.15/702-v5.19-01-arm64-dts-mediatek-mt7622-add-support-for-coherent-D.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Mon, 7 Feb 2022 10:27:22 +0100
   3 Subject: [PATCH] arm64: dts: mediatek: mt7622: add support for coherent
   4  DMA
   5
   6 It improves performance by eliminating the need for a cache flush on rx and tx
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 ---
  10
  11 --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
  12 +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
  13 @@ -357,7 +357,7 @@
  14                 };
  15
  16                 cci_control2: slave-if@5000 {
  17 -                       compatible = "arm,cci-400-ctrl-if";
  18 +                       compatible = "arm,cci-400-ctrl-if", "syscon";
  19                         interface-type = "ace";
  20                         reg = <0x5000 0x1000>;
  21                 };
  22 @@ -938,6 +938,8 @@
  23                 power-domains = <&scpsys MT7622_POWER_DOMAIN_ETHSYS>;
  24                 mediatek,ethsys = <&ethsys>;
  25                 mediatek,sgmiisys = <&sgmiisys>;
  26 +               mediatek,cci-control = <&cci_control2>;
  27 +               dma-coherent;
  28                 #address-cells = <1>;
  29                 #size-cells = <0>;
  30                 status = "disabled";