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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/cache.h>
#include <arch/io.h>
#include <boardid.h>
#include <boot/coreboot_tables.h>
#include <delay.h>
#include <device/device.h>
#include <elog.h>
#include <gpio.h>
#include <soc/bl31_plat_params.h>
#include <soc/i2c.h>
#include <soc/mt6391.h>
#include <soc/mtcmos.h>
#include <soc/pinmux.h>
#include <soc/pll.h>
#include <soc/usb.h>
#include <vendorcode/google/chromeos/chromeos.h>
static void register_da9212_to_bl31(void)
{
#if IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE)
static struct bl31_da9212_param param_da9212 = {
.h = {
.type = PARAM_CLUSTER1_DA9212,
},
.i2c_bus = 1,
.ic_en = {
.type = PARAM_GPIO_MT6391,
.polarity = PARAM_GPIO_ACTIVE_HIGH,
.index = MT6391_KP_ROW3,
},
.en_a = {
.type = PARAM_GPIO_MT6391,
.polarity = PARAM_GPIO_ACTIVE_HIGH,
.index = MT6391_KP_ROW4,
},
.en_b = {
.type = PARAM_GPIO_NONE,
},
};
if (board_id() == 2) {
param_da9212.ic_en.type = PARAM_GPIO_SOC;
param_da9212.ic_en.index = PAD_UCTS2;
}
register_bl31_param(¶m_da9212.h);
/* Init i2c bus Timing register for da9212 */
mtk_i2c_bus_init(param_da9212.i2c_bus);
#endif
}
static void register_mt6311_to_bl31(void)
{
#if IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE)
static struct bl31_mt6311_param param_mt6311 = {
.h = {
.type = PARAM_CLUSTER1_MT6311,
},
.i2c_bus = 1,
};
register_bl31_param(¶m_mt6311.h);
/* Init i2c bus Timing register for mt6311 */
mtk_i2c_bus_init(param_mt6311.i2c_bus);
#endif
}
static void configure_bl31(void)
{
switch (board_id()) {
case 3:
case 4:
/* rev-3 and rev-4 use mt6311 as external buck */
register_mt6311_to_bl31();
break;
case 2:
default:
/* rev-2 and rev-5 use da9212 as external buck */
register_da9212_to_bl31();
break;
}
}
static void configure_audio(void)
{
mtcmos_audio_power_on();
/* regulator for codecs */
switch (board_id()) {
case 0:
/* vgp1 set to 1.22V */
mt6391_configure_ldo(LDO_VCAMD, LDO_1P22);
/* vgp4 set to 1.8V */
mt6391_configure_ldo(LDO_VGP4, LDO_1P8);
break;
default:
/* board from Rev1 */
/* vgp1 set to 1.8V */
mt6391_configure_ldo(LDO_VCAMD, LDO_1P8);
/* delay 1ms for realtek's power sequence request */
mdelay(1);
/* vcama set to 1.8V */
mt6391_configure_ldo(LDO_VCAMA, LDO_1P8);
break;
}
/* reset ALC5676 */
gpio_output(PAD_LCM_RST, 1);
/* SoC I2S */
gpio_set_mode(PAD_I2S0_LRCK, PAD_I2S0_LRCK_FUNC_I2S1_WS);
gpio_set_mode(PAD_I2S0_BCK, PAD_I2S0_BCK_FUNC_I2S1_BCK);
gpio_set_mode(PAD_I2S0_MCK, PAD_I2S0_MCK_FUNC_I2S1_MCK);
gpio_set_mode(PAD_I2S0_DATA0, PAD_I2S0_DATA0_FUNC_I2S1_DO_1);
gpio_set_mode(PAD_I2S0_DATA1, PAD_I2S0_DATA1_FUNC_I2S2_DI_2);
/* codec ext MCLK ON */
mt6391_gpio_output(MT6391_KP_COL4, 1);
mt6391_gpio_output(MT6391_KP_COL5, 1);
/* Init i2c bus Timing register for audio codecs */
mtk_i2c_bus_init(0);
/* set I2S clock to 48KHz */
mt_pll_set_aud_div(48 * KHz);
}
static void configure_usb(void)
{
setup_usb_host();
if (board_id() > 3)
gpio_output(PAD_CM2MCLK, 1);
}
/* Setup backlight control pins as output pin and power-off by default */
static void configure_backlight(void)
{
/* Configure PANEL_LCD_POWER_EN */
switch (board_id()) {
case 1:
case 2:
break;
case 3:
gpio_output(PAD_UCTS2, 0);
break;
case 4:
gpio_output(PAD_SRCLKENAI, 0);
break;
default:
gpio_output(PAD_UTXD2, 0);
break;
}
gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
}
static void mainboard_init(device_t dev)
{
/* TP_SHIFT_EN: Enables the level shifter for I2C bus 4 (TPAD), which
* also contains the PS8640 eDP brige and the USB hub.
*/
mt6391_gpio_output(MT6391_KP_ROW2, 1);
/* Config SD card detection pin */
gpio_input(PAD_EINT1); /* SD_DET */
configure_audio();
configure_backlight();
configure_usb();
configure_bl31();
elog_init();
elog_add_boot_reason();
}
static void mainboard_enable(device_t dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = "oak",
.enable_dev = mainboard_enable,
};
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