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/*
* 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() > 4)
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() < 4)
mt6391_enable_reset_when_ap_resets();
}
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