| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Rockchip 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #include <arch/cache.h> |
| #include <arch/io.h> |
| #include <boot/coreboot_tables.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/i2c.h> |
| #include <edid.h> |
| #include <elog.h> |
| #include <gpio.h> |
| #include <soc/display.h> |
| #include <soc/grf.h> |
| #include <soc/soc.h> |
| #include <soc/pmu.h> |
| #include <soc/clock.h> |
| #include <soc/rk808.h> |
| #include <soc/spi.h> |
| #include <soc/i2c.h> |
| #include <symbols.h> |
| #include <vbe.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| #include "board.h" |
| |
| static void configure_usb(void) |
| { |
| gpio_output(GPIO(0, B, 4), 1); /* USB2_PWR_EN */ |
| } |
| |
| static void configure_emmc(void) |
| { |
| write32(&rk3288_grf->iomux_emmcdata, IOMUX_EMMCDATA); |
| write32(&rk3288_grf->iomux_emmcpwren, IOMUX_EMMCPWREN); |
| write32(&rk3288_grf->iomux_emmccmd, IOMUX_EMMCCMD); |
| |
| gpio_output(GPIO(2, B, 1), 1); /* EMMC_RST_L */ |
| } |
| |
| static void configure_i2s(void) |
| { |
| write32(&rk3288_grf->iomux_i2s, IOMUX_I2S); |
| write32(&rk3288_grf->iomux_i2sclk, IOMUX_I2SCLK); |
| |
| /* AUDIO IO domain 1.8V voltage selection */ |
| write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 6)); |
| rkclk_configure_i2s(12288000); |
| } |
| |
| static void configure_vop(void) |
| { |
| write32(&rk3288_grf->iomux_lcdc, IOMUX_LCDC); |
| |
| /* lcdc(vop) iodomain select 1.8V */ |
| write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 0)); |
| |
| rk808_configure_ldo(8, 1800); /* VCC18_LCD (HDMI_AVDD_1V8) */ |
| rk808_configure_ldo(7, 1000); /* VDD10_LCD (HDMI_AVDD_1V0) */ |
| rk808_configure_switch(1, 1); /* VCC33_LCD */ |
| } |
| |
| static void configure_hdmi(void) |
| { |
| /* HDMI I2C */ |
| write32(&rk3288_grf->iomux_i2c5sda, IOMUX_HDMI_EDP_I2C_SDA); |
| write32(&rk3288_grf->iomux_i2c5scl, IOMUX_HDMI_EDP_I2C_SCL); |
| |
| gpio_output(GPIO(7, B, 3), 1); /* POWER_HDMI_ON */ |
| } |
| |
| static void mainboard_init(device_t dev) |
| { |
| gpio_output(GPIO_RESET, 0); |
| |
| configure_usb(); |
| configure_emmc(); |
| configure_i2s(); |
| configure_vop(); |
| configure_hdmi(); |
| |
| elog_init(); |
| elog_add_watchdog_reset(); |
| elog_add_boot_reason(); |
| |
| /* If recovery mode is detected, reduce frequency and voltage to reduce |
| * heat in case machine is left unattended. chrome-os-partner:41201. */ |
| if (recovery_mode_enabled()) { |
| printk(BIOS_DEBUG, "Reducing APLL freq for recovery mode.\n"); |
| rkclk_configure_cpu(APLL_600_MHZ); |
| rk808_configure_buck(1, 900); |
| } |
| } |
| |
| static void mainboard_enable(device_t dev) |
| { |
| dev->ops->init = &mainboard_init; |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .enable_dev = mainboard_enable, |
| }; |
| |
| void lb_board(struct lb_header *header) |
| { |
| struct lb_range *dma; |
| |
| dma = (struct lb_range *)lb_new_record(header); |
| dma->tag = LB_TAB_DMA; |
| dma->size = sizeof(*dma); |
| dma->range_start = (uintptr_t)_dma_coherent; |
| dma->range_size = _dma_coherent_size; |
| } |
| |
| void mainboard_power_on_backlight(void) |
| { |
| return; |
| } |