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Date:   Mon, 18 Jul 2022 09:04:45 +0200
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     wei.fang@....com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de
Cc:     aisheng.dong@....com, devicetree@...r.kernel.org, peng.fan@....com,
        ping.bai@....com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, sudeep.holla@....com, festevam@...il.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V3 3/3] arm64: dts: imx8ulp-evk: Add the fec support

On 18.07.22 16:22, wei.fang@....com wrote:
> From: Wei Fang <wei.fang@....com>
> 
> Enable the fec on i.MX8ULP EVK board.
> 
> Signed-off-by: Wei Fang <wei.fang@....com>
> ---
> V2 change:
> Add clock_ext_rmii and clock_ext_ts. They are both related to EVK board.
> V3 change:
> No change.
> ---
>  arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 57 +++++++++++++++++++
>  1 file changed, 57 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> index 33e84c4e9ed8..ebce716b10e6 100644
> --- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> @@ -19,6 +19,21 @@ memory@...00000 {
>  		device_type = "memory";
>  		reg = <0x0 0x80000000 0 0x80000000>;
>  	};
> +
> +	clock_ext_rmii: clock-ext-rmii {
> +		compatible = "fixed-clock";
> +		clock-frequency = <50000000>;
> +		clock-output-names = "ext_rmii_clk";
> +		#clock-cells = <0>;
> +	};
> +
> +	clock_ext_ts: clock-ext-ts {
> +		compatible = "fixed-clock";
> +		/* External ts clock is 50MHZ from PHY on EVK board. */
> +		clock-frequency = <50000000>;
> +		clock-output-names = "ext_ts_clk";
> +		#clock-cells = <0>;
> +	};
>  };
>  
>  &lpuart5 {
> @@ -38,7 +53,49 @@ &usdhc0 {
>  	status = "okay";
>  };
>  
> +&fec {
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&pinctrl_enet>;
> +	pinctrl-1 = <&pinctrl_enet>;
> +	clocks = <&cgc1 IMX8ULP_CLK_XBAR_DIVBUS>,
> +		 <&pcc4 IMX8ULP_CLK_ENET>,
> +		 <&cgc1 IMX8ULP_CLK_ENET_TS_SEL>,
> +		 <&clock_ext_rmii>;
> +	clock-names = "ipg", "ahb", "ptp", "enet_clk_ref";
> +	assigned-clocks = <&cgc1 IMX8ULP_CLK_ENET_TS_SEL>;
> +	assigned-clock-parents = <&clock_ext_ts>;
> +	phy-mode = "rmii";
> +	phy-handle = <&ethphy>;
> +	status = "okay";
> +
> +	mdio {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		ethphy: ethernet-phy {

@1

> +			reg = <1>;
> +			micrel,led-mode = <1>;
> +		};
> +	};
> +};
> +
>  &iomuxc1 {
> +	pinctrl_enet: enetgrp {
> +		fsl,pins = <
> +			MX8ULP_PAD_PTE15__ENET0_MDC     0x43
> +			MX8ULP_PAD_PTE14__ENET0_MDIO    0x43
> +			MX8ULP_PAD_PTE17__ENET0_RXER    0x43
> +			MX8ULP_PAD_PTE18__ENET0_CRS_DV  0x43
> +			MX8ULP_PAD_PTF1__ENET0_RXD0     0x43
> +			MX8ULP_PAD_PTE20__ENET0_RXD1    0x43
> +			MX8ULP_PAD_PTE16__ENET0_TXEN    0x43
> +			MX8ULP_PAD_PTE23__ENET0_TXD0    0x43
> +			MX8ULP_PAD_PTE22__ENET0_TXD1    0x43
> +			MX8ULP_PAD_PTE19__ENET0_REFCLK  0x43
> +			MX8ULP_PAD_PTF10__ENET0_1588_CLKIN 0x43
> +		>;
> +	};
> +
>  	pinctrl_lpuart5: lpuart5grp {
>  		fsl,pins = <
>  			MX8ULP_PAD_PTF14__LPUART5_TX	0x3


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