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u-boot/board/davinci/ea20/ea20.c
Heiko Schocher 765f2f083f video, da8xx-fb: changes for am335x usage 
to use this driver also on am335x based boards, the following
changes are made:

- struct lcd_ctrl_config lcd_cfg is now configurable
  through board code

- controller base is configurable through define
  DA8XX_LCD_CNTL_BASE. To be compatible with older
  da8xx based boards: If this define is missing, the
  DAVINCI_LCD_CNTL_BASE is used

- Determine LCD IP Version, and make the driver
  working on lcd revision register values:
  Version 1:
  0x4C100102
  Version 2:
  0x4F200800
  0x4F201000

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Tom Rini <trini@ti.com>
Acked-by: Tom Rini <trini@ti.com>
2013-08-10 10:38:28 +02:00

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/*
* (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>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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 "../../../drivers/video/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,
};
static const struct display_panel disp_panel = {
QVGA,
16,
16,
COLOR_ACTIVE,
};
static const struct lcd_ctrl_config lcd_cfg = {
&disp_panel,
.ac_bias = 255,
.ac_bias_intrpt = 0,
.dma_burst_sz = 16,
.bpp = 16,
.fdd = 255,
.tft_alt_mode = 0,
.stn_565_mode = 0,
.mono_8bit_mode = 0,
.invert_line_clock = 1,
.invert_frm_clock = 1,
.sync_edge = 0,
.sync_ctrl = 1,
.raster_order = 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 DISP_ON high to enable LCD output*/
gpio_direction_output(97, 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);
#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]);
return 0;
}
/*
* Do not overwrite the console
* Use always serial for U-Boot console
*/
int overwrite_console(void)
{
return 1;
}
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, &lcd_cfg, 16);
return 0;
}
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
unsigned char buf[2];
int ret;
/* 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);
/* Set fixed contrast settings for LCD via I2C potentiometer */
buf[0] = 0x00;
buf[1] = 0xd7;
ret = i2c_write(0x2e, 6, 1, buf, 2);
if (ret)
puts("\nContrast Settings FAILED\n");
/* Set LCD_B_PWR high to power up LCD Backlight*/
gpio_set_value(102, 1);
return 0;
}
#endif /* CONFIG_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 */
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