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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.
*/
#include <arch/io.h>
#include <bootblock_common.h>
#include <device/i2c_simple.h>
#include <gpio.h>
#include <soc/addressmap.h>
#include <soc/clk_rst.h>
#include <soc/clock.h>
#include <soc/nvidia/tegra/i2c.h>
#include <soc/pinmux.h>
#include <soc/spi.h> /* FIXME: move back to soc code? */
#include "pmic.h"
static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
static void set_clock_sources(void)
{
/* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */
write32(&clk_rst->clk_src_uarta, PLLP << CLK_SOURCE_SHIFT);
clock_configure_source(mselect, PLLP, 102000);
/* The PMIC is on I2C5 and can run at 400 KHz. */
clock_configure_i2c_scl_freq(i2c5, PLLP, 400);
/* TODO: We should be able to set this to 50MHz, but that did not seem
* reliable. */
clock_configure_source(sbc4, PLLP, 33333);
}
void bootblock_mainboard_init(void)
{
set_clock_sources();
clock_enable_clear_reset(CLK_L_CACHE2 | CLK_L_TMR,
CLK_H_I2C5 | CLK_H_APBDMA,
0, CLK_V_MSELECT, 0, 0);
// Board ID GPIOs, bits 0-3.
gpio_input(GPIO(Q3));
gpio_input(GPIO(T1));
gpio_input(GPIO(X1));
gpio_input(GPIO(X4));
// I2C5 (PMU) clock.
pinmux_set_config(PINMUX_PWR_I2C_SCL_INDEX,
PINMUX_PWR_I2C_SCL_FUNC_I2CPMU | PINMUX_INPUT_ENABLE);
// I2C5 (PMU) data.
pinmux_set_config(PINMUX_PWR_I2C_SDA_INDEX,
PINMUX_PWR_I2C_SDA_FUNC_I2CPMU | PINMUX_INPUT_ENABLE);
i2c_init(4);
pmic_init(4);
/* SPI4 data out (MOSI) */
pinmux_set_config(PINMUX_GPIO_PG6_INDEX,
PINMUX_GPIO_PG6_FUNC_SPI4 | PINMUX_INPUT_ENABLE |
PINMUX_PULL_UP);
/* SPI4 data in (MISO) */
pinmux_set_config(PINMUX_GPIO_PG7_INDEX,
PINMUX_GPIO_PG7_FUNC_SPI4 | PINMUX_INPUT_ENABLE |
PINMUX_PULL_UP);
/* SPI4 clock */
pinmux_set_config(PINMUX_GPIO_PG5_INDEX,
PINMUX_GPIO_PG5_FUNC_SPI4 | PINMUX_INPUT_ENABLE);
/* SPI4 chip select 0 */
pinmux_set_config(PINMUX_GPIO_PI3_INDEX,
PINMUX_GPIO_PI3_FUNC_SPI4 | PINMUX_INPUT_ENABLE);
tegra_spi_init(4);
}
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