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Date:   Tue, 19 Jul 2022 00:22:57 +1000
From:   wei.fang@....com
To:     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:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, peng.fan@....com,
        ping.bai@....com, sudeep.holla@....com,
        linux-arm-kernel@...ts.infradead.org, aisheng.dong@....com
Subject: [PATCH V3 3/3] arm64: dts: imx8ulp-evk: Add the fec support

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 {
+			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
-- 
2.25.1

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