| /* |
| * 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 <console/console.h> |
| #include <device/i2c.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); |
| } |