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arm: Tegra2: Move clk/mux init to board_early_init_f, add GPIO init

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Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Tom Warren 2011-04-14 12:09:41 +00:00 committed by Albert ARIBAUD
parent c5e93131fa
commit f4ef66685a
6 changed files with 113 additions and 11 deletions
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32
board/nvidia/common/board.c
View File

@ -41,7 +41,16 @@ const struct tegra2_sysinfo sysinfo = {
#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f(void)
{
debug("Board Early Init\n");
/* Initialize periph clocks */
clock_init();
/* Initialize periph pinmuxes */
pinmux_init();
/* Initialize periph GPIOs */
gpio_init();
/* Init UART, scratch regs, and start CPU */
tegra2_start();
return 0;
}
@ -64,10 +73,10 @@ int timer_init(void)
static void clock_init_uart(void)
{
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
static int pllp_init_done;
u32 reg;
if (!pllp_init_done) {
reg = readl(&clkrst->crc_pllp_base);
if (!(reg & PLL_BASE_OVRRIDE)) {
/* Override pllp setup for 216MHz operation. */
reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP);
reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM);
@ -78,8 +87,6 @@ static void clock_init_uart(void)
reg &= ~PLL_BYPASS;
writel(reg, &clkrst->crc_pllp_base);
pllp_init_done++;
}
/* Now do the UART reset/clock enable */
@ -181,6 +188,15 @@ void pinmux_init(void)
pin_mux_uart();
}
/*
* Routine: gpio_init
* Description: Do individual peripheral GPIO configs
*/
void gpio_init(void)
{
gpio_config_uart();
}
/*
* Routine: board_init
* Description: Early hardware init.
@ -192,11 +208,5 @@ int board_init(void)
/* board id for Linux */
gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
/* Initialize peripheral clocks */
clock_init();
/* Initialize periph pinmuxes */
pinmux_init();
return 0;
}

4
board/nvidia/common/board.h
View File

@ -25,5 +25,9 @@
#define _BOARD_H_
void tegra2_start(void);
void clock_init(void);
void pinmux_init(void);
void gpio_init(void);
void gpio_config_uart(void);
#endif /* BOARD_H */

1
board/nvidia/harmony/Makefile
View File

@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
COBJS := $(BOARD).o
COBJS += ../common/board.o
SRCS := $(COBJS:.o=.c)

34
board/nvidia/harmony/harmony.c Normal file
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@ -0,0 +1,34 @@
/*
* (C) Copyright 2010,2011
* NVIDIA Corporation <www.nvidia.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/tegra2.h>
/*
* Routine: gpio_config_uart
* Description: Does nothing on Harmony - no conflict w/SPI.
*/
void gpio_config_uart(void)
{
}

1
board/nvidia/seaboard/Makefile
View File

@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
COBJS := $(BOARD).o
COBJS += ../common/board.o
SRCS := $(COBJS:.o=.c)

52
board/nvidia/seaboard/seaboard.c Normal file
View File

@ -0,0 +1,52 @@
/*
* (C) Copyright 2010,2011
* NVIDIA Corporation <www.nvidia.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/tegra2.h>
#include <asm/arch/gpio.h>
/*
* Routine: gpio_config_uart
* Description: Force GPIO_PI3 low on Seaboard so UART4 works.
*/
void gpio_config_uart(void)
{
int gp = GPIO_PI3;
struct gpio_ctlr *gpio = (struct gpio_ctlr *)NV_PA_GPIO_BASE;
struct gpio_ctlr_bank *bank = &gpio->gpio_bank[GPIO_BANK(gp)];
u32 val;
/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
val = readl(&bank->gpio_config[GPIO_PORT(gp)]);
val |= 1 << GPIO_BIT(gp);
writel(val, &bank->gpio_config[GPIO_PORT(gp)]);
val = readl(&bank->gpio_out[GPIO_PORT(gp)]);
val &= ~(1 << GPIO_BIT(gp));
writel(val, &bank->gpio_out[GPIO_PORT(gp)]);
val = readl(&bank->gpio_dir_out[GPIO_PORT(gp)]);
val |= 1 << GPIO_BIT(gp);
writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]);
}