/* * This file is part of the coreboot project. * * Copyright 2015 MediaTek Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <arch/io.h> #include <boardid.h> #include <bootblock_common.h> #include <delay.h> #include <gpio.h> #include <soc/gpio.h> #include <soc/i2c.h> #include <soc/mt6391.h> #include <soc/pericfg.h> #include <soc/pinmux.h> #include <soc/spi.h> #include "gpio.h" static void i2c_set_gpio_pinmux(void) { gpio_set_mode(PAD_SDA1, PAD_SDA1_FUNC_SDA1); gpio_set_mode(PAD_SCL1, PAD_SCL1_FUNC_SCL1); gpio_set_mode(PAD_SDA4, PAD_SDA4_FUNC_SDA4); gpio_set_mode(PAD_SCL4, PAD_SCL4_FUNC_SCL4); } static void nor_set_gpio_pinmux(void) { /* Set driving strength of EINT4~EINT9 to 8mA * 0: 2mA * 1: 4mA * 2: 8mA * 3: 16mA */ /* EINT4: 0x10005B20[14:13] */ clrsetbits_le16(&mt8173_gpio->drv_mode[2].val, 0xf << 12, 2 << 13); /* EINT5~EINT9: 0x10005B30[2:1] */ clrsetbits_le16(&mt8173_gpio->drv_mode[3].val, 0xf << 0, 2 << 1), gpio_set_pull(PAD_EINT4, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_pull(PAD_EINT5, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_pull(PAD_EINT6, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_pull(PAD_EINT7, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_pull(PAD_EINT8, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_pull(PAD_EINT9, GPIO_PULL_ENABLE, GPIO_PULL_UP); gpio_set_mode(PAD_EINT4, PAD_EINT4_FUNC_SFWP_B); gpio_set_mode(PAD_EINT5, PAD_EINT5_FUNC_SFOUT); gpio_set_mode(PAD_EINT6, PAD_EINT6_FUNC_SFCS0); gpio_set_mode(PAD_EINT7, PAD_EINT7_FUNC_SFHOLD); gpio_set_mode(PAD_EINT8, PAD_EINT8_FUNC_SFIN); gpio_set_mode(PAD_EINT9, PAD_EINT9_FUNC_SFCK); } void bootblock_mainboard_early_init(void) { /* Clear UART0 power down signal */ clrbits_le32(&mt8173_pericfg->pdn0_set, PERICFG_UART0_PDN); } void bootblock_mainboard_init(void) { /* adjust gpio params when external voltage is 1.8V */ gpio_init(GPIO_EINT_1P8V); /* set i2c related gpio */ i2c_set_gpio_pinmux(); /* set nor related GPIO */ nor_set_gpio_pinmux(); /* SPI_LEVEL_ENABLE: Enable 1.8V to 3.3V level shifter for EC SPI bus */ if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT > 4 && board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 8) gpio_output(PAD_SRCLKENAI2, 1); /* Init i2c bus 2 Timing register for TPM */ mtk_i2c_bus_init(CONFIG_DRIVER_TPM_I2C_BUS); mtk_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS, SPI_PAD1_MASK, 6*MHz); setup_chromeos_gpios(); if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 4) mt6391_enable_reset_when_ap_resets(); }