/* * This file is part of the coreboot project. * * Copyright 2015 Google Inc. * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved. * * 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/io.h> #include <arch/mmu.h> #include <boot/coreboot_tables.h> #include <delay.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/padconfig.h> #include <soc/spi.h> #include <soc/nvidia/tegra/dc.h> #include <soc/display.h> #include <vendorcode/google/chromeos/chromeos.h> static const struct pad_config sdmmc1_pad[] = { /* MMC1(SDCARD) */ PAD_CFG_SFIO(SDMMC1_CLK, PINMUX_INPUT_ENABLE, SDMMC1), PAD_CFG_SFIO(SDMMC1_CMD, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1), PAD_CFG_SFIO(SDMMC1_DAT0, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1), PAD_CFG_SFIO(SDMMC1_DAT1, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1), PAD_CFG_SFIO(SDMMC1_DAT2, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1), PAD_CFG_SFIO(SDMMC1_DAT3, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, SDMMC1), /* MMC1 Card Detect pin */ PAD_CFG_GPIO_INPUT(GPIO_PZ1, 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(GPIO_PZ4, PINMUX_PULL_NONE), }; static const struct pad_config audio_codec_pads[] = { /* GPIO_X1_AUD(BB3) is AUDIO_LDO_EN (->CODEC RESET_N pin) */ PAD_CFG_GPIO_OUT1(GPIO_X1_AUD, PINMUX_PULL_DOWN), }; 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_EN1, PINMUX_PULL_NONE | PINMUX_PARKED | PINMUX_INPUT_ENABLE | PINMUX_LPDR | PINMUX_IO_HV), /* Add backlight vdd/enable/pwm/dp hpd pad cfgs here */ }; 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 pad_config i2s1_pad[] = { /* I2S1 */ PAD_CFG_SFIO(DAP1_SCLK, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP1_FS, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP1_DOUT, PINMUX_INPUT_ENABLE, I2S1), PAD_CFG_SFIO(DAP1_DIN, PINMUX_INPUT_ENABLE | PINMUX_TRISTATE, I2S1), /* codec MCLK via AUD SFIO */ PAD_CFG_SFIO(AUD_MCLK, PINMUX_PULL_NONE, AUD), }; 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 const struct funit_cfg funitcfgs[] = { FUNIT_CFG(SDMMC1, PLLP, 48000, sdmmc1_pad, ARRAY_SIZE(sdmmc1_pad)), FUNIT_CFG(SDMMC4, PLLP, 48000, NULL, 0), FUNIT_CFG(I2C1, PLLP, 100, i2c1_pad, ARRAY_SIZE(i2c1_pad)), FUNIT_CFG(I2C6, PLLP, 400, audio_codec_pads, ARRAY_SIZE(audio_codec_pads)), FUNIT_CFG_USB(USBD), }; /* Audio init: clocks and enables/resets */ static void setup_audio(void) { /* Audio codec (ES755) uses OSC freq (via AUD_MCLK), s/b 38.4MHz */ soc_configure_funits(audio_funit, ARRAY_SIZE(audio_funit)); /* * As per NVIDIA hardware team, we need to take ALL audio devices * connected to AHUB (AUDIO, APB2APE, I2S, SPDIF, etc.) out of reset * and clock-enabled, otherwise reading AHUB devices (in our case, * I2S/APBIF/AUDIO<XBAR>) will hang. */ soc_configure_ape(); clock_enable_audio(); } static void mainboard_init(device_t dev) { soc_configure_pads(padcfgs, ARRAY_SIZE(padcfgs)); soc_configure_funits(funitcfgs, ARRAY_SIZE(funitcfgs)); i2c_init(I2C1_BUS); setup_audio(); } static void mainboard_enable(device_t dev) { dev->ops->init = &mainboard_init; } struct chip_operations mainboard_ops = { .name = "foster", .enable_dev = mainboard_enable, };