Re: [PATCH 10/15] arm64: dts: mediatek: mt7981b: Add Ethernet and WiFi offload support

AngeloGioacchino Del Regno
2025-10-16T11:29:13Z

Il 16/10/25 12:08, Sjoerd Simons ha scritto:
> Add device tree nodes for the Ethernet subsystem on MT7981B SoC,
> including:
> - Ethernet MAC controller with dual GMAC support
> - Wireless Ethernet Dispatch (WED)
> - SGMII PHY controllers for high-speed Ethernet interfaces
> - Reserved memory regions for WiFi offload processor
>
> Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
> ---
> arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 133 ++++++++++++++++++++++++++++++
> 1 file changed, 133 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
> index 13950fe6e8766..c85fa0ddf2da8 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi

..snip..

> @@ -347,6 +389,97 @@ ethsys: clock-controller@15000000 {
> #reset-cells = <1>;
> };
>
> + wed: wed@15010000 {
> + compatible = "mediatek,mt7981-wed",
> + "syscon";
> + reg = <0 0x15010000 0 0x1000>;
> + interrupt-parent = <&gic>;

That's redundant: gic is already the default interrupt parent for this node.

> + interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
> + memory-region = <&wo_emi0>, <&wo_ilm0>, <&wo_dlm0>,
> + <&wo_data>, <&wo_boot>;
> + memory-region-names = "wo-emi", "wo-ilm", "wo-dlm",
> + "wo-data", "wo-boot";
> + mediatek,wo-ccif = <&wo_ccif0>;
> + };
> +

..snip..

> +
> + eth_sram: sram@15140000 {
> + compatible = "mmio-sram";
> + reg = <0 0x15140000 0 0x40000>;
> + ranges = <0 0x15140000 0 0x40000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + };
> +
> + wo_ccif0: syscon@151a5000 {
> + compatible = "mediatek,mt7986-wo-ccif", "syscon";
> + reg = <0 0x151a5000 0 0x1000>;
> + interrupt-parent = <&gic>;

ditto.

> + interrupts = <GIC_SPI 211 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> wifi: wifi@18000000 {
> compatible = "mediatek,mt7981-wmac";
> reg = <0 0x18000000 0 0x1000000>,
>

Everything else looks good.

Cheers,
Angelo