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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2017 PHYTEC Messtechnik GmbH
- * Author: Wadim Egorov <w.egorov@phytec.de>
- */
- #include <asm/io.h>
- #include <common.h>
- #include <dm.h>
- #include <env.h>
- #include <environment.h>
- #include <i2c.h>
- #include <i2c_eeprom.h>
- #include <netdev.h>
- #include "som.h"
- #include <power/regulator.h>
- #include <power/rk8xx_pmic.h>
- 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
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