From: Marek Vasut <marex@denx.de>
Date: Sat, 19 Feb 2022 16:13:54 +0000 (+0100)
Subject: ARM: imx: imx8mn-ddr4-evk: Add ethernet support
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=fea66073171461eebcf35264293616d6423788e5;p=u-boot.git

ARM: imx: imx8mn-ddr4-evk: Add ethernet support

Add support for ethernet on the imx8mn-ddr4-evk.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
---

diff --git a/arch/arm/dts/imx8mn-evk.dtsi b/arch/arm/dts/imx8mn-evk.dtsi
index 76d042a4cf..416fadb22b 100644
--- a/arch/arm/dts/imx8mn-evk.dtsi
+++ b/arch/arm/dts/imx8mn-evk.dtsi
@@ -53,6 +53,7 @@
 	pinctrl-0 = <&pinctrl_fec1>;
 	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy0>;
+	phy-reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
 	fsl,magic-packet;
 	status = "okay";
 
diff --git a/board/freescale/imx8mn_evk/imx8mn_evk.c b/board/freescale/imx8mn_evk/imx8mn_evk.c
index 9a0a0488bf..b24342fd5c 100644
--- a/board/freescale/imx8mn_evk/imx8mn_evk.c
+++ b/board/freescale/imx8mn_evk/imx8mn_evk.c
@@ -7,17 +7,47 @@
 #include <env.h>
 #include <init.h>
 #include <asm/global_data.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int board_init(void)
+int board_mmc_get_env_dev(int devno)
 {
+	return devno;
+}
+
+static void setup_fec(void)
+{
+	struct iomuxc_gpr_base_regs *gpr =
+		(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
+
+	/* Use 125M anatop REF_CLK1 for ENET1, not from external */
+	clrsetbits_le32(&gpr->gpr[1], 0x2000, 0);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	/* enable rgmii rxc skew and phy mode select to RGMII copper */
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
+
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
 	return 0;
 }
 
-int board_mmc_get_env_dev(int devno)
+int board_init(void)
 {
-	return devno;
+	setup_fec();
+
+	return 0;
 }
 
 int board_late_init(void)
diff --git a/configs/imx8mn_ddr4_evk_defconfig b/configs/imx8mn_ddr4_evk_defconfig
index 4f943a6ba1..27bf5ec05a 100644
--- a/configs/imx8mn_ddr4_evk_defconfig
+++ b/configs/imx8mn_ddr4_evk_defconfig
@@ -65,7 +65,12 @@ CONFIG_MMC_HS400_ES_SUPPORT=y
 CONFIG_MMC_HS400_SUPPORT=y
 CONFIG_FSL_USDHC=y
 CONFIG_PHYLIB=y
+CONFIG_PHY_ATHEROS=y
 CONFIG_DM_ETH=y
+CONFIG_DM_ETH_PHY=y
+CONFIG_PHY_GIGE=y
+CONFIG_FEC_MXC=y
+CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 CONFIG_PINCTRL_IMX8M=y