/* SPDX-License-Identifier: GPL-2.0-only */ #include <device/mmio.h> #include <boot/coreboot_tables.h> #include <console/console.h> #include <device/device.h> #include <device/i2c_simple.h> #include <edid.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 <vendorcode/google/chromeos/chromeos.h> #include <security/vboot/vboot_common.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_codec(void) { write32(&rk3288_grf->iomux_i2c2, IOMUX_I2C2); /* CODEC I2C */ i2c_init(2, 400*KHz); /* CODEC I2C */ write32(&rk3288_grf->iomux_i2s, IOMUX_I2S); write32(&rk3288_grf->iomux_i2sclk, IOMUX_I2SCLK); rk808_configure_ldo(6, 1800); /* VCC18_CODEC */ /* AUDIO IO domain 1.8V voltage selection */ write32(&rk3288_grf->io_vsel, RK_SETBITS(1 << 6)); rkclk_configure_i2s(12288000); } static void configure_3g(void) { /* Force 3G modem off to avoid confusing the EHCI host and * causing problems during enumeration/init */ gpio_output(GPIO(5, C, 1), 1); /* 3G_SHUTDOWN */ gpio_output(GPIO(4, D, 2), 0); /* 3G_ON_OFF */ } static void mainboard_init(struct device *dev) { gpio_output(GPIO_RESET, 0); configure_usb(); configure_emmc(); configure_codec(); configure_3g(); /* No video. */ /* If recovery mode is detected, reduce frequency and voltage to reduce * heat in case machine is left unattended. chrome-os-partner:41201. */ if (vboot_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(struct device *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_TAG_DMA; dma->size = sizeof(*dma); dma->range_start = (uintptr_t)_dma_coherent; dma->range_size = REGION_SIZE(dma_coherent); } void mainboard_power_on_backlight(void) { return; }