2 * (C) Copyright 2010,2011
3 * NVIDIA Corporation <www.nvidia.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/arch/tegra2.h>
28 #include <asm/arch/sys_proto.h>
30 #include <asm/arch/clk_rst.h>
31 #include <asm/arch/clock.h>
32 #include <asm/arch/pinmux.h>
33 #include <asm/arch/uart.h>
36 #ifdef CONFIG_TEGRA2_MMC
40 DECLARE_GLOBAL_DATA_PTR;
42 const struct tegra2_sysinfo sysinfo = {
43 CONFIG_TEGRA2_BOARD_STRING
48 * Description: init the timestamp and lastinc value
55 static void enable_uart(enum periph_id pid)
57 /* Assert UART reset and enable clock */
58 reset_set_enable(pid, 1);
60 clock_ll_set_source(pid, 0); /* UARTx_CLK_SRC = 00, PLLP_OUT0 */
65 /* De-assert reset to UART */
66 reset_set_enable(pid, 0);
70 * Routine: clock_init_uart
71 * Description: init the PLL and clock for the UART(s)
73 static void clock_init_uart(void)
75 #if defined(CONFIG_TEGRA2_ENABLE_UARTA)
76 enable_uart(PERIPH_ID_UART1);
77 #endif /* CONFIG_TEGRA2_ENABLE_UARTA */
78 #if defined(CONFIG_TEGRA2_ENABLE_UARTD)
79 enable_uart(PERIPH_ID_UART4);
80 #endif /* CONFIG_TEGRA2_ENABLE_UARTD */
84 * Routine: pin_mux_uart
85 * Description: setup the pin muxes/tristate values for the UART(s)
87 static void pin_mux_uart(void)
89 #if defined(CONFIG_TEGRA2_ENABLE_UARTA)
90 pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA);
91 pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA);
93 pinmux_tristate_disable(PINGRP_IRRX);
94 pinmux_tristate_disable(PINGRP_IRTX);
95 #endif /* CONFIG_TEGRA2_ENABLE_UARTA */
96 #if defined(CONFIG_TEGRA2_ENABLE_UARTD)
97 pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD);
99 pinmux_tristate_disable(PINGRP_GMC);
100 #endif /* CONFIG_TEGRA2_ENABLE_UARTD */
103 #ifdef CONFIG_TEGRA2_MMC
105 * Routine: clock_init_mmc
106 * Description: init the PLL and clocks for the SDMMC controllers
108 static void clock_init_mmc(void)
110 clock_start_periph_pll(PERIPH_ID_SDMMC4, CLOCK_ID_PERIPH, 20000000);
111 clock_start_periph_pll(PERIPH_ID_SDMMC3, CLOCK_ID_PERIPH, 20000000);
115 * Routine: pin_mux_mmc
116 * Description: setup the pin muxes/tristate values for the SDMMC(s)
118 static void pin_mux_mmc(void)
120 /* SDMMC4: config 3, x8 on 2nd set of pins */
121 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
122 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
123 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
125 pinmux_tristate_disable(PINGRP_ATB);
126 pinmux_tristate_disable(PINGRP_GMA);
127 pinmux_tristate_disable(PINGRP_GME);
129 /* SDMMC3: SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */
130 pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3);
131 pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3);
132 pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3);
134 pinmux_tristate_disable(PINGRP_SDC);
135 pinmux_tristate_disable(PINGRP_SDD);
136 pinmux_tristate_disable(PINGRP_SDB);
141 * Routine: board_init
142 * Description: Early hardware init.
149 /* boot param addr */
150 gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);
155 #ifdef CONFIG_TEGRA2_MMC
156 /* this is a weak define that we are overriding */
157 int board_mmc_init(bd_t *bd)
159 debug("board_mmc_init called\n");
160 /* Enable clocks, muxes, etc. for SDMMC controllers */
165 debug("board_mmc_init: init eMMC\n");
166 /* init dev 0, eMMC chip, with 4-bit bus */
167 tegra2_mmc_init(0, 4);
169 debug("board_mmc_init: init SD slot\n");
170 /* init dev 1, SD slot, with 4-bit bus */
171 tegra2_mmc_init(1, 4);
177 #ifdef CONFIG_BOARD_EARLY_INIT_F
178 int board_early_init_f(void)
180 /* Initialize essential common plls */
183 /* Initialize UART clocks */
186 /* Initialize periph pinmuxes */
189 /* Initialize periph GPIOs */
192 /* Init UART, scratch regs, and start CPU */
196 #endif /* EARLY_INIT */