| /* |
| * 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/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_SOC, |
| .polarity = PARAM_GPIO_ACTIVE_HIGH, |
| .index = PAD_UCTS2, |
| }, |
| .en_a = { |
| .type = PARAM_GPIO_MT6391, |
| .polarity = PARAM_GPIO_ACTIVE_HIGH, |
| .index = MT6391_KP_ROW4, |
| }, |
| .en_b = { |
| .type = PARAM_GPIO_NONE, |
| }, |
| }; |
| register_bl31_param(¶m_da9212.h); |
| #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); |
| #endif |
| } |
| |
| static void configure_bl31(void) |
| { |
| switch (board_id()) { |
| case 2: |
| register_da9212_to_bl31(); |
| break; |
| default: |
| /* rev-3 and rev-4 use mt6311 as external buck */ |
| register_mt6311_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); |
| |
| /* 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) |
| { |
| switch (board_id()) { |
| case 0: |
| gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */ |
| mt6391_gpio_output(MT6391_KP_ROW3, 0); /* PANEL_POWER_EN_6397 */ |
| break; |
| case 1: |
| case 2: |
| gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */ |
| gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */ |
| break; |
| case 3: |
| gpio_output(PAD_UCTS2, 0); /* PANEL_LCD_POWER_EN */ |
| gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */ |
| gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */ |
| break; |
| case 4: |
| default: |
| gpio_output(PAD_SRCLKENAI, 0); /* PANEL_LCD_POWER_EN */ |
| gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */ |
| gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */ |
| break; |
| } |
| } |
| |
| 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, |
| }; |