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/*
* 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(struct device *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(struct device *dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = "foster",
.enable_dev = mainboard_enable,
};
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