[PATCH] riscv: dts: sophgo: Add ethernet configuration for cv18xx

[Inochi Amaoto]

On Mon, Oct 28, 2024 at 02:09:06PM +0100, Andrew Lunn wrote:
> > +++ b/arch/riscv/boot/dts/sophgo/cv18xx.dtsi
> > @@ -210,6 +210,55 @@ i2c4: i2c at 4040000 {
> >  			status = "disabled";
> >  		};
> >  
> > +		gmac0: ethernet at 4070000 {
> > +			compatible = "snps,dwmac-3.70a";
> > +			reg = <0x04070000 0x10000>;
> > +			clocks = <&clk CLK_AXI4_ETH0>, <&clk CLK_ETH0_500M>;
> > +			clock-names = "stmmaceth", "ptp_ref";
> > +			interrupts = <31 IRQ_TYPE_LEVEL_HIGH>;
> > +			interrupt-names = "macirq";
> > +			phy-handle = <&phy0>;
> > +			phy-mode = "rmii";
> > +			rx-fifo-depth = <8192>;
> > +			tx-fifo-depth = <8192>;
> > +			snps,multicast-filter-bins = <0>;
> > +			snps,perfect-filter-entries = <1>;
> > +			snps,aal;
> > +			snps,txpbl = <8>;
> > +			snps,rxpbl = <8>;
> > +			snps,mtl-rx-config = <&gmac0_mtl_rx_setup>;
> > +			snps,mtl-tx-config = <&gmac0_mtl_tx_setup>;
> > +			snps,axi-config = <&gmac0_stmmac_axi_setup>;
> > +			status = "disabled";
> > +
> > +			mdio {
> > +				compatible = "snps,dwmac-mdio";
> > +				#address-cells = <1>;
> > +				#size-cells = <0>;
> > +
> > +				phy0: phy at 0 {
> > +					compatible = "ethernet-phy-ieee802.3-c22";
> > +					reg = <0>;
> > +				};
> > +			};
> 
> It is not clear to me what cv18xx.dtsi represents, 

This is a include file to define common ip for the whole
cv18xx series SoCs (cv1800b, cv1812h, sg2000, sg2000).

> and where the PHY node should be, here, or in a .dts file. 
> Is this a SOM, and the PHY is on the SOM? 

The phy is on the SoC, it is embedded, and no external phy
is supported. So I think the phy node should stay here, not 
in the dts file.

Regards,
Inochi