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/*
* This file is part of the coreboot project.
*
* Copyright 2014 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>
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),
};
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);
}
/* Audio init: clocks and enables/resets */
static void setup_audio(void)
{
/* External peripheral 1: audio codec (max98090) using 12MHz CLK1 */
clock_configure_source(extperiph1, CLK_M, 12000);
/*
* We need 1.5MHz for I2S1. So, we use CLK_M. CLK_DIVIDER macro
* returns a divisor (0xe) a little bit off from the ideal value (0xd),
* but it's good enough for beeps.
*/
clock_configure_source(i2s1, CLK_M, 1500);
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 */
}
static void mainboard_enable(device_t dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = "rush",
.enable_dev = mainboard_enable,
};
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