// SPDX-License-Identifier: GPL-2.0-or-later // SPDX-FileCopyrightText: 2018 Sascha Hauer, Pengutronix #include <asm/memory.h> #include <bootsource.h> #include <common.h> #include <init.h> #include <linux/phy.h> #include <linux/sizes.h> #include <mach/bbu.h> #include <envfs.h> #define PHY_ID_AR8031 0x004dd074 #define AR_PHY_ID_MASK 0xffffffff static int ar8031_phy_fixup(struct phy_device *phydev) { /* * Enable 1.8V(SEL_1P5_1P8_POS_REG) on * Phy control debug reg 0 */ phy_write(phydev, 0x1d, 0x1f); phy_write(phydev, 0x1e, 0x8); /* rgmii tx clock delay enable */ phy_write(phydev, 0x1d, 0x05); phy_write(phydev, 0x1e, 0x100); return 0; } static int nxp_imx8mm_evk_init(void) { int emmc_bbu_flag = 0; int emmc_sd_flag = 0; if (!of_machine_is_compatible("fsl,imx8mm-evk")) return 0; barebox_set_hostname("imx8mm-evk"); if (bootsource_get() == BOOTSOURCE_MMC) { if (bootsource_get_instance() == 2) { of_device_enable_path("/chosen/environment-emmc"); emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT; } else { of_device_enable_path("/chosen/environment-sd"); emmc_sd_flag = BBU_HANDLER_FLAG_DEFAULT; } } else { of_device_enable_path("/chosen/environment-emmc"); emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT; } imx8mq_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox", emmc_sd_flag); imx8mq_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc2", emmc_bbu_flag); phy_register_fixup_for_uid(PHY_ID_AR8031, AR_PHY_ID_MASK, ar8031_phy_fixup); return 0; } device_initcall(nxp_imx8mm_evk_init);