// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2017 PHYTEC Messtechnik GmbH * Author: Wadim Egorov */ #include #include #include #include #include #include #include #include #include "som.h" #include #include static int valid_rk3288_som(struct rk3288_som *som) { unsigned char *p = (unsigned char *)som; unsigned char *e = p + sizeof(struct rk3288_som) - 1; int hw = 0; while (p < e) { hw += hweight8(*p); p++; } return hw == som->bs; } int rk3288_board_late_init(void) { int ret; struct udevice *dev; struct rk3288_som opt; int off; /* Get the identificatioin page of M24C32-D EEPROM */ off = fdt_path_offset(gd->fdt_blob, "eeprom0"); if (off < 0) { printf("%s: No eeprom0 path offset\n", __func__); return off; } ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev); if (ret) { printf("%s: Could not find EEPROM\n", __func__); return ret; } ret = i2c_set_chip_offset_len(dev, 2); if (ret) return ret; ret = i2c_eeprom_read(dev, 0, (uint8_t *)&opt, sizeof(struct rk3288_som)); if (ret) { printf("%s: Could not read EEPROM\n", __func__); return ret; } if (opt.api_version != 0 || !valid_rk3288_som(&opt)) { printf("Invalid data or wrong EEPROM layout version.\n"); /* Proceed anyway, since there is no fallback option */ } if (is_valid_ethaddr(opt.mac)) eth_env_set_enetaddr("ethaddr", opt.mac); return 0; } #ifdef CONFIG_SPL_BUILD #if !defined(CONFIG_SPL_OF_PLATDATA) static int phycore_init(void) { struct udevice *pmic; int ret; ret = uclass_first_device_err(UCLASS_PMIC, &pmic); if (ret) return ret; #if defined(CONFIG_SPL_POWER_SUPPORT) /* Increase USB input current to 2A */ ret = rk818_spl_configure_usb_input_current(pmic, 2000); if (ret) return ret; /* Close charger when USB lower then 3.26V */ ret = rk818_spl_configure_usb_chrg_shutdown(pmic, 3260000); if (ret) return ret; #endif return 0; } #endif void spl_board_init(void) { #if !defined(CONFIG_SPL_OF_PLATDATA) int ret; if (of_machine_is_compatible("phytec,rk3288-phycore-som")) { ret = phycore_init(); if (ret) { debug("Failed to set up phycore power settings: %d\n", ret); return; } } #endif } #endif