/* * This file is part of the coreboot project. * * Copyright 2015 Google 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <arch/mmu.h> #include <boot/coreboot_tables.h> #include <device/device.h> #include <memrange.h> #include <soc/addressmap.h> #include <soc/clk_rst.h> #include <soc/clock.h> #include <soc/funitcfg.h> #include <soc/nvidia/tegra/i2c.h> #include <soc/nvidia/tegra/usb.h> #include <soc/padconfig.h> #include <soc/spi.h> #include <soc/nvidia/tegra/dc.h> #include <soc/display.h> #include <vendorcode/google/chromeos/chromeos.h> #include <delay.h> static const struct pad_config sdmmc3_pad[] = { /* MMC3(SDCARD) */ PAD_CFG_SFIO(SDMMC3_CLK, PINMUX_INPUT_ENABLE, SDMMC3), PAD_CFG_SFIO(SDMMC3_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_CLK_LB_IN, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC3), PAD_CFG_SFIO(SDMMC3_CLK_LB_OUT, PINMUX_INPUT_ENABLE | PINMUX_PULL_DOWN, SDMMC3), /* MMC3 Card Detect pin */ PAD_CFG_GPIO_INPUT(SDMMC3_CD_N, PINMUX_PULL_UP), /* Disable SD card reader power so it can be reset even on warm boot. Payloads must enable power before accessing SD card slots. */ PAD_CFG_GPIO_OUT0(KB_ROW0, PINMUX_PULL_NONE), }; static const struct pad_config sdmmc4_pad[] = { /* MMC4 (eMMC) */ PAD_CFG_SFIO(SDMMC4_CLK, PINMUX_INPUT_ENABLE, SDMMC4), PAD_CFG_SFIO(SDMMC4_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT4, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT5, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT6, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), PAD_CFG_SFIO(SDMMC4_DAT7, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC4), }; static const struct pad_config padcfgs[] = { /* We pull the USB VBUS signals up but keep them as inputs since the * voltage source likes to drive them low on overcurrent conditions */ PAD_CFG_GPIO_INPUT(USB_VBUS_EN0, PINMUX_PULL_UP), PAD_CFG_GPIO_INPUT(USB_VBUS_EN1, PINMUX_PULL_UP), /* backlight_vdd_gpio: P2 */ PAD_CFG_GPIO_OUT0(DAP3_DOUT, PINMUX_PULL_NONE), /* backlight_en_gpio: H2 */ PAD_CFG_GPIO_OUT0(GPIO_PH2, PINMUX_PULL_NONE), /* backlight_pwm: H1 */ PAD_CFG_SFIO(GPIO_PH1, PINMUX_PULL_NONE, PWM1), /* DP HPD */ PAD_CFG_SFIO(DP_HPD, PINMUX_INPUT_ENABLE, DP), }; static const struct pad_config i2c1_pad[] = { /* GEN1 I2C */ PAD_CFG_SFIO(GEN1_I2C_SCL, PINMUX_INPUT_ENABLE, I2C1), PAD_CFG_SFIO(GEN1_I2C_SDA, PINMUX_INPUT_ENABLE, I2C1), }; static const struct funit_cfg funitcfgs[] = { FUNIT_CFG(SDMMC3, PLLP, 48000, sdmmc3_pad, ARRAY_SIZE(sdmmc3_pad)), FUNIT_CFG(SDMMC4, PLLP, 48000, sdmmc4_pad, ARRAY_SIZE(sdmmc4_pad)), FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)), }; static void setup_ec_spi(void) { struct tegra_spi_channel *spi; spi = tegra_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS); } static void setup_usb(void) { clock_enable_clear_reset(CLK_L_USBD, CLK_H_USB3, 0, 0, 0, 0); usb_setup_utmip((void *)TEGRA_USBD_BASE); usb_setup_utmip((void *)TEGRA_USB3_BASE); } static const struct pad_config i2s1_pad[] = { /* I2S1 */ PAD_CFG_SFIO(DAP2_SCLK, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP2_FS, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP2_DOUT, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP2_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1), /* codec MCLK via EXTPERIPH1 */ PAD_CFG_SFIO(DAP_MCLK1, PINMUX_PULL_NONE, EXTPERIPH1), }; static const struct funit_cfg audio_funit[] = { /* We need 1.5MHz for I2S1. So we use CLK_M */ FUNIT_CFG(I2S1, CLK_M, 1500, i2s1_pad, ARRAY_SIZE(i2s1_pad)), }; static void configure_display_clocks(void) { u32 lclks = CLK_L_DISP1 | CLK_L_HOST1X | CLK_L_PWM; u32 xclks = CLK_X_DPAUX | CLK_X_SOR0; clock_enable_clear_reset(lclks, 0, 0, 0, 0, xclks); /* Give clocks time to stabilize. */ udelay(IO_STABILIZATION_DELAY); } static int configure_display_blocks(void) { soc_configure_host1x(); /* enable display related clocks */ configure_display_clocks(); return 0; } /* Audio init: clocks and enables/resets */ static void setup_audio(void) { /* * External peripheral 1: audio codec (max98090) uses 12MHz CLK1 * NOTE: We can't use a funits struct/call here because EXTPERIPH1/2/3 * don't have BASE regs or CAR RST/ENA bits. Also, the mux setting for * EXTPERIPH1/DAP_MCLK1 is rolled into the I2S1 padcfg. */ clock_configure_source(extperiph1, CLK_M, 12000); soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit)); clock_external_output(1); /* For external MAX98090 audio codec. */ /* * Confirmed by NVIDIA hardware team, we need to take ALL audio devices * connected to AHUB (AUDIO, APBIF, I2S, DAM, AMX, ADX, SPDIF, AFC) out * of reset and clock-enabled, otherwise reading AHUB devices (in our * case, I2S/APBIF/AUDIO<XBAR>) will hang. */ clock_enable_audio(); } static void mainboard_init(device_t dev) { soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs)); soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs)); setup_ec_spi(); setup_usb(); setup_audio(); i2c_init(I2C1_BUS); /* for max98090 codec */ /* if panel needs to bringup */ if (!vboot_skip_display_init()) configure_display_blocks(); } void display_startup(device_t dev) { dp_display_startup(dev); } static void mainboard_enable(device_t dev) { dev->ops->init = &mainboard_init; } struct chip_operations mainboard_ops = { .name = "rush", .enable_dev = mainboard_enable, };