Re: [PATCH] arm64: dts: mt8195: Add Ethernet controller

[Krzysztof Kozlowski]

On 17/10/2022 05:58, Biao Huang wrote:
> Add Ethernet controller node for mt8195.
> 
> Signed-off-by: Biao Huang <biao.huang@xxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/mediatek/mt8195-demo.dts | 88 ++++++++++++++++++++
>  arch/arm64/boot/dts/mediatek/mt8195.dtsi     | 87 +++++++++++++++++++
>  2 files changed, 175 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> index 4fbd99eb496a..02e04f82a4ae 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> @@ -258,6 +258,72 @@ &mt6359_vsram_others_ldo_reg {
>  };
>  
>  &pio {
> +	eth_default: eth_default {

No underscores in node names. Please also be sure your patch does not
bring new warnings with `dtbs_check` (lack of suffix above could mean it
brings...)

> +		txd_pins {

No underscores

> +			pinmux = <PINMUX_GPIO77__FUNC_GBE_TXD3>,
> +				 <PINMUX_GPIO78__FUNC_GBE_TXD2>,
> +				 <PINMUX_GPIO79__FUNC_GBE_TXD1>,
> +				 <PINMUX_GPIO80__FUNC_GBE_TXD0>;
> +			drive-strength = <MTK_DRIVE_8mA>;
> +		};
> +		cc_pins {

Ditto... and so on.

> +			pinmux = <PINMUX_GPIO85__FUNC_GBE_TXC>,
> +				 <PINMUX_GPIO88__FUNC_GBE_TXEN>,
> +				 <PINMUX_GPIO87__FUNC_GBE_RXDV>,
> +				 <PINMUX_GPIO86__FUNC_GBE_RXC>;
> +			drive-strength = <MTK_DRIVE_8mA>;
> +		};
> +		rxd_pins {
> +			pinmux = <PINMUX_GPIO81__FUNC_GBE_RXD3>,
> +				 <PINMUX_GPIO82__FUNC_GBE_RXD2>,
> +				 <PINMUX_GPIO83__FUNC_GBE_RXD1>,
> +				 <PINMUX_GPIO84__FUNC_GBE_RXD0>;
> +		};
> +		mdio_pins {
> +			pinmux = <PINMUX_GPIO89__FUNC_GBE_MDC>,
> +				 <PINMUX_GPIO90__FUNC_GBE_MDIO>;
> +			input-enable;
> +		};
> +		power_pins {
> +			pinmux = <PINMUX_GPIO91__FUNC_GPIO91>,
> +				 <PINMUX_GPIO92__FUNC_GPIO92>;
> +			output-high;
> +		};
> +	};
> +
> +	eth_sleep: eth_sleep {
> +		txd_pins {
> +			pinmux = <PINMUX_GPIO77__FUNC_GPIO77>,
> +				 <PINMUX_GPIO78__FUNC_GPIO78>,
> +				 <PINMUX_GPIO79__FUNC_GPIO79>,
> +				 <PINMUX_GPIO80__FUNC_GPIO80>;
> +		};
> +		cc_pins {
> +			pinmux = <PINMUX_GPIO85__FUNC_GPIO85>,
> +				 <PINMUX_GPIO88__FUNC_GPIO88>,
> +				 <PINMUX_GPIO87__FUNC_GPIO87>,
> +				 <PINMUX_GPIO86__FUNC_GPIO86>;
> +		};
> +		rxd_pins {
> +			pinmux = <PINMUX_GPIO81__FUNC_GPIO81>,
> +				 <PINMUX_GPIO82__FUNC_GPIO82>,
> +				 <PINMUX_GPIO83__FUNC_GPIO83>,
> +				 <PINMUX_GPIO84__FUNC_GPIO84>;
> +		};
> +		mdio_pins {
> +			pinmux = <PINMUX_GPIO89__FUNC_GPIO89>,
> +				 <PINMUX_GPIO90__FUNC_GPIO90>;
> +			input-disable;
> +			bias-disable;
> +		};
> +		power_pins {
> +			pinmux = <PINMUX_GPIO91__FUNC_GPIO91>,
> +				 <PINMUX_GPIO92__FUNC_GPIO92>;
> +			input-disable;
> +			bias-disable;
> +		};
> +	};
> +
>  	gpio_keys_pins: gpio-keys-pins {
>  		pins {
>  			pinmux = <PINMUX_GPIO106__FUNC_GPIO106>;
> @@ -434,6 +500,28 @@ &xhci0 {
>  	status = "okay";
>  };
>  
> +&eth {
> +	phy-mode ="rgmii-rxid";
> +	phy-handle = <&eth_phy0>;
> +	snps,reset-gpio = <&pio 93 GPIO_ACTIVE_HIGH>;
> +	snps,reset-delays-us = <0 10000 10000>;
> +	mediatek,tx-delay-ps = <2030>;
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&eth_default>;
> +	pinctrl-1 = <&eth_sleep>;
> +	status = "okay";
> +
> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		eth_phy0: eth_phy0@1 {

ethernet-phy@1

> +			compatible = "ethernet-phy-id001c.c916";
> +			reg = <0x1>;
> +		};
> +	};
> +};
> +
>  &xhci1 {
>  	vusb33-supply = <&mt6359_vusb_ldo_reg>;
>  	status = "okay";
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> index 905d1a90b406..aa1fcc3b9cb6 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> @@ -1042,6 +1042,93 @@ spis1: spi@1101e000 {
>  			status = "disabled";
>  		};
>  
> +		stmmac_axi_setup: stmmac-axi-config {
> +			snps,wr_osr_lmt = <0x7>;
> +			snps,rd_osr_lmt = <0x7>;
> +			snps,blen = <0 0 0 0 16 8 4>;
> +		};
> +
> +		mtl_rx_setup: rx-queues-config {
> +			snps,rx-queues-to-use = <4>;
> +			snps,rx-sched-sp;
> +			queue0 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x0>;
> +			};
> +			queue1 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x0>;
> +			};
> +			queue2 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x0>;
> +			};
> +			queue3 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x0>;
> +			};
> +		};
> +
> +		mtl_tx_setup: tx-queues-config {
> +			snps,tx-queues-to-use = <4>;
> +			snps,tx-sched-wrr;
> +			queue0 {
> +				snps,weight = <0x10>;
> +				snps,dcb-algorithm;
> +				snps,priority = <0x0>;
> +			};
> +			queue1 {
> +				snps,weight = <0x11>;
> +				snps,dcb-algorithm;
> +				snps,priority = <0x1>;
> +			};
> +			queue2 {
> +				snps,weight = <0x12>;
> +				snps,dcb-algorithm;
> +				snps,priority = <0x2>;
> +			};
> +			queue3 {
> +				snps,weight = <0x13>;
> +				snps,dcb-algorithm;
> +				snps,priority = <0x3>;
> +			};
> +		};
> +
> +		eth: ethernet@11021000 {
> +			compatible = "mediatek,mt8195-gmac", "snps,dwmac-5.10a";
> +			reg = <0 0x11021000 0 0x4000>;
> +			interrupts = <GIC_SPI 716 IRQ_TYPE_LEVEL_HIGH 0>;
> +			interrupt-names = "macirq";
> +			mac-address = [00 55 7b b5 7d f7];

How is this property of a SoC? Are you saying now that all MT8195 SoCs
have the same MAC address?

Best regards,
Krzysztof