Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-30 08:31:03 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/board/davinci/ea20/ea20.c
Stefano Babic 1441aa6ae8 Davinci: ea20: use gpio framework to access gpios 
Drop direct access to SOC's registers and use
the function of the GPIO driver for da8xx.

[Tom: Remove gpio[68]_base as it's now unused]

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
CC: dzu@denx.de
CC: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-03-27 22:05:29 +02:00

313 lines
8.1 KiB
C
Raw Blame History

/*
* (C) Copyright 2010
* Stefano Babic, DENX Software Engineering, sbabic@denx.de
*
* Based on da850evm.c, original Copyrights follow:
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
*
* Based on da830evm.c. Original Copyrights follow:
*
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <i2c.h>
#include <net.h>
#include <netdev.h>
#include <asm/arch/hardware.h>
#include <asm/arch/emif_defs.h>
#include <asm/arch/emac_defs.h>
#include <asm/io.h>
#include <asm/arch/davinci_misc.h>
#include <asm/gpio.h>
#include <asm/arch/da8xx-fb.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct da8xx_panel lcd_panel = {
/* Casio COM57H531x */
.name = "Casio_COM57H531x",
.width = 640,
.height = 480,
.hfp = 12,
.hbp = 144,
.hsw = 30,
.vfp = 10,
.vbp = 35,
.vsw = 3,
.pxl_clk = 25000000,
.invert_pxl_clk = 0,
};
/* SPI0 pin muxer settings */
static const struct pinmux_config spi1_pins[] = {
{ pinmux(5), 1, 1 },
{ pinmux(5), 1, 2 },
{ pinmux(5), 1, 4 },
{ pinmux(5), 1, 5 }
};
/* I2C pin muxer settings */
static const struct pinmux_config i2c_pins[] = {
{ pinmux(4), 2, 2 },
{ pinmux(4), 2, 3 }
};
/* UART0 pin muxer settings */
static const struct pinmux_config uart_pins[] = {
{ pinmux(3), 2, 7 },
{ pinmux(3), 2, 6 },
{ pinmux(3), 2, 4 },
{ pinmux(3), 2, 5 }
};
#ifdef CONFIG_DRIVER_TI_EMAC
#define HAS_RMII 1
static const struct pinmux_config emac_pins[] = {
{ pinmux(14), 8, 2 },
{ pinmux(14), 8, 3 },
{ pinmux(14), 8, 4 },
{ pinmux(14), 8, 5 },
{ pinmux(14), 8, 6 },
{ pinmux(14), 8, 7 },
{ pinmux(15), 8, 1 },
{ pinmux(4), 8, 0 },
{ pinmux(4), 8, 1 }
};
#endif
#ifdef CONFIG_NAND_DAVINCI
const struct pinmux_config nand_pins[] = {
{ pinmux(7), 1, 0}, /* CS2 */
{ pinmux(7), 0, 1}, /* CS3 in three state*/
{ pinmux(7), 1, 4 }, /* EMA_WE */
{ pinmux(7), 1, 5 }, /* EMA_OE */
{ pinmux(9), 1, 0 }, /* EMA_D[7] */
{ pinmux(9), 1, 1 }, /* EMA_D[6] */
{ pinmux(9), 1, 2 }, /* EMA_D[5] */
{ pinmux(9), 1, 3 }, /* EMA_D[4] */
{ pinmux(9), 1, 4 }, /* EMA_D[3] */
{ pinmux(9), 1, 5 }, /* EMA_D[2] */
{ pinmux(9), 1, 6 }, /* EMA_D[1] */
{ pinmux(9), 1, 7 }, /* EMA_D[0] */
{ pinmux(12), 1, 5 }, /* EMA_A[2] */
{ pinmux(12), 1, 6 }, /* EMA_A[1] */
{ pinmux(6), 1, 0 } /* EMA_CLK */
};
#endif
const struct pinmux_config gpio_pins[] = {
{ pinmux(13), 8, 0 }, /* GPIO6[15] RESETOUTn on SOM*/
{ pinmux(13), 8, 5 }, /* GPIO6[10] U0_SW0 on EA20-00101_2*/
{ pinmux(13), 8, 3 }, /* GPIO6[12] U0_SW1 on EA20-00101_2*/
{ pinmux(19), 8, 5 }, /* GPIO6[1] DISP_ON */
{ pinmux(14), 8, 1 } /* GPIO6[6] LCD_B_PWR*/
};
const struct pinmux_config lcd_pins[] = {
{ pinmux(17), 2, 1 }, /* LCD_D_0 */
{ pinmux(17), 2, 0 }, /* LCD_D_1 */
{ pinmux(16), 2, 7 }, /* LCD_D_2 */
{ pinmux(16), 2, 6 }, /* LCD_D_3 */
{ pinmux(16), 2, 5 }, /* LCD_D_4 */
{ pinmux(16), 2, 4 }, /* LCD_D_5 */
{ pinmux(16), 2, 3 }, /* LCD_D_6 */
{ pinmux(16), 2, 2 }, /* LCD_D_7 */
{ pinmux(18), 2, 1 }, /* LCD_D_8 */
{ pinmux(18), 2, 0 }, /* LCD_D_9 */
{ pinmux(17), 2, 7 }, /* LCD_D_10 */
{ pinmux(17), 2, 6 }, /* LCD_D_11 */
{ pinmux(17), 2, 5 }, /* LCD_D_12 */
{ pinmux(17), 2, 4 }, /* LCD_D_13 */
{ pinmux(17), 2, 3 }, /* LCD_D_14 */
{ pinmux(17), 2, 2 }, /* LCD_D_15 */
{ pinmux(18), 2, 6 }, /* LCD_PCLK */
{ pinmux(19), 2, 0 }, /* LCD_HSYNC */
{ pinmux(19), 2, 1 }, /* LCD_VSYNC */
{ pinmux(19), 2, 6 }, /* DA850_NLCD_AC_ENB_CS */
};
const struct pinmux_config halten_pin[] = {
{ pinmux(3), 4, 2 } /* GPIO8[6] HALTEN */
};
static const struct pinmux_resource pinmuxes[] = {
#ifdef CONFIG_SPI_FLASH
PINMUX_ITEM(spi1_pins),
#endif
PINMUX_ITEM(uart_pins),
PINMUX_ITEM(i2c_pins),
#ifdef CONFIG_NAND_DAVINCI
PINMUX_ITEM(nand_pins),
#endif
#ifdef CONFIG_VIDEO
PINMUX_ITEM(lcd_pins),
#endif
};
static const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
{ DAVINCI_LPSC_SPI1 }, /* Serial Flash */
{ DAVINCI_LPSC_EMAC }, /* image download */
{ DAVINCI_LPSC_UART0 }, /* console */
{ DAVINCI_LPSC_GPIO },
{ DAVINCI_LPSC_LCDC }, /* LCD */
};
int board_early_init_f(void)
{
/* PinMux for GPIO */
if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
return 1;
/* Set the RESETOUTn low */
gpio_direction_output(111, 0);
/* Set U0_SW0 low for UART0 as console*/
gpio_direction_output(106, 0);
/* Set U0_SW1 low for UART0 as console*/
gpio_direction_output(108, 0);
/* Set LCD_B_PWR low to power down LCD Backlight*/
gpio_direction_output(102, 0);
/* Set DISP_ON low to disable LCD output*/
gpio_direction_output(97, 0);
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
/*
* NAND CS setup - cycle counts based on da850evm NAND timings in the
* Linux kernel @ 25MHz EMIFA
*/
#ifdef CONFIG_NAND_DAVINCI
writel((DAVINCI_ABCR_WSETUP(0) |
DAVINCI_ABCR_WSTROBE(1) |
DAVINCI_ABCR_WHOLD(0) |
DAVINCI_ABCR_RSETUP(0) |
DAVINCI_ABCR_RSTROBE(1) |
DAVINCI_ABCR_RHOLD(0) |
DAVINCI_ABCR_TA(0) |
DAVINCI_ABCR_ASIZE_8BIT),
&davinci_emif_regs->ab1cr); /* CS2 */
#endif
/*
* Power on required peripherals
* ARM does not have access by default to PSC0 and PSC1
* assuming here that the DSP bootloader has set the IOPU
* such that PSC access is available to ARM
*/
if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
return 1;
/* setup the SUSPSRC for ARM to control emulation suspend */
writel(readl(&davinci_syscfg_regs->suspsrc) &
~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
DAVINCI_SYSCFG_SUSPSRC_UART0),
&davinci_syscfg_regs->suspsrc);
/* configure pinmux settings */
if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
return 1;
#ifdef CONFIG_DRIVER_TI_EMAC
if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0)
return 1;
davinci_emac_mii_mode_sel(HAS_RMII);
#endif /* CONFIG_DRIVER_TI_EMAC */
/* enable the console UART */
writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
DAVINCI_UART_PWREMU_MGMT_UTRST),
&davinci_uart0_ctrl_regs->pwremu_mgmt);
/*
* Reconfigure the LCDC priority to the highest to ensure that
* the throughput/latency requirements for the LCDC are met.
*/
writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
&davinci_syscfg_regs->mstpri[2]);
/* Set LCD_B_PWR low to power up LCD Backlight*/
gpio_set_value(102, 1);
/* Set DISP_ON low to disable LCD output*/
gpio_set_value(97, 1);
return 0;
}
int board_init(void)
{
/* arch number of the board */
gd->bd->bi_arch_number = MACH_TYPE_EA20;
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
da8xx_video_init(&lcd_panel, 16);
return 0;
}
#ifdef BOARD_LATE_INIT
int board_late_init(void)
{
/* PinMux for HALTEN */
if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
return 1;
/* Set HALTEN to high */
gpio_direction_output(134, 1);
setenv("stdout", "serial");
return 0;
}
#endif /* BOARD_LATE_INIT */
#ifdef CONFIG_DRIVER_TI_EMAC
/*
* Initializes on-board ethernet controllers.
*/
int board_eth_init(bd_t *bis)
{
if (!davinci_emac_initialize()) {
printf("Error: Ethernet init failed!\n");
return -1;
}
/*
* This board has a RMII PHY. However, the MDC line on the SOM
* must not be disabled (there is no MII PHY on the
* baseboard) via the GPIO2[6], because this pin
* disables at the same time the SPI flash.
*/
return 0;
}
#endif /* CONFIG_DRIVER_TI_EMAC */
Reference in a new issue View git blame Copy permalink