321 lines
8.6 KiB
C
321 lines
8.6 KiB
C
/*
|
|
* (C) Copyright 2010 Juergen Beisert - Pengutronix
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <common.h>
|
|
#include <init.h>
|
|
#include <gpio.h>
|
|
#include <environment.h>
|
|
#include <envfs.h>
|
|
#include <errno.h>
|
|
#include <mci.h>
|
|
#include <sizes.h>
|
|
#include <usb/ehci.h>
|
|
#include <asm/armlinux.h>
|
|
#include <io.h>
|
|
#include <asm/mmu.h>
|
|
#include <generated/mach-types.h>
|
|
#include <mach/imx-regs.h>
|
|
#include <mach/clock.h>
|
|
#include <mach/mci.h>
|
|
#include <mach/fb.h>
|
|
#include <mach/usb.h>
|
|
#include <mach/iomux.h>
|
|
|
|
static struct mxs_mci_platform_data mci_pdata = {
|
|
.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED,
|
|
.voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */
|
|
};
|
|
|
|
#define GPIO_LCD_RESET 50
|
|
#define GPIO_LCD_BACKLIGHT 60
|
|
|
|
static void chumby_fb_enable(int enable)
|
|
{
|
|
gpio_direction_output(GPIO_LCD_RESET, enable);
|
|
|
|
/* Give the display a chance to sync before we enable
|
|
* the backlight to avoid flickering
|
|
*/
|
|
if (enable)
|
|
mdelay(100);
|
|
|
|
gpio_direction_output(GPIO_LCD_BACKLIGHT, enable);
|
|
}
|
|
|
|
static struct fb_videomode falconwing_vmode = {
|
|
/*
|
|
* Nanovision NMA35QV65-B2-K01 (directly connected)
|
|
* Clock: 6.25 MHz
|
|
* Syncs: high active, DE low active
|
|
* Display area: 70.08 mm x 52.56 mm
|
|
*/
|
|
.name = "NMA35",
|
|
.refresh = 60,
|
|
.xres = 320,
|
|
.yres = 240,
|
|
.pixclock = KHZ2PICOS(6250), /* max. 10 MHz */
|
|
/* line lenght should be 64 µs */
|
|
.left_margin = 28,
|
|
.hsync_len = 24,
|
|
.right_margin = 28,
|
|
/* frame rate should be 60 Hz */
|
|
.upper_margin = 8,
|
|
.vsync_len = 4,
|
|
.lower_margin = 8,
|
|
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
|
|
.vmode = FB_VMODE_NONINTERLACED,
|
|
};
|
|
|
|
#define MAX_FB_SIZE SZ_1M
|
|
|
|
static struct imx_fb_platformdata fb_mode = {
|
|
.mode_list = &falconwing_vmode,
|
|
.mode_cnt = 1,
|
|
/* the NMA35 is a 24 bit display, but only 18 bits are connected */
|
|
.ld_intf_width = STMLCDIF_18BIT,
|
|
.enable = chumby_fb_enable,
|
|
.fixed_screen = (void *)(0x40000000 + SZ_64M - MAX_FB_SIZE),
|
|
.fixed_screen_size = MAX_FB_SIZE,
|
|
};
|
|
|
|
static const uint32_t pad_setup[] = {
|
|
/* may be not required as already done by the bootlet code */
|
|
#if 0
|
|
/* SDRAM data signals */
|
|
EMI_D15 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D14 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D13 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D12 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D11 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D10 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D9 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D8 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D7 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D6 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D5 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D4 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D3 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D2 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D1 | STRENGTH(0) | VE_2_5V,
|
|
EMI_D0 | STRENGTH(0) | VE_2_5V,
|
|
|
|
/* SDRAM data control signals */
|
|
EMI_DQM0 | STRENGTH(0) | VE_2_5V, /* LDM */
|
|
EMI_DQM1 | STRENGTH(0) | VE_2_5V, /* UDM */
|
|
|
|
/* SDRAM address signals */
|
|
EMI_A0 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A1 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A2 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A3 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A4 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A5 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A6 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A7 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A8 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A9 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A10 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A11 | STRENGTH(0) | VE_2_5V,
|
|
EMI_A12 | STRENGTH(0) | VE_2_5V,
|
|
|
|
/* SDRAM address control signals */
|
|
EMI_RASN | STRENGTH(0) | VE_2_5V,
|
|
EMI_CASN | STRENGTH(0) | VE_2_5V,
|
|
|
|
/* SDRAM control signals */
|
|
EMI_CE0N | STRENGTH(0) | VE_2_5V,
|
|
EMI_CLK | STRENGTH(0) | VE_2_5V,
|
|
EMI_CLKN | STRENGTH(0) | VE_2_5V,
|
|
EMI_CKE | STRENGTH(0) | VE_2_5V,
|
|
EMI_WEN | STRENGTH(0) | VE_2_5V,
|
|
EMI_BA0 | STRENGTH(0) | VE_2_5V,
|
|
EMI_BA1 | STRENGTH(0) | VE_2_5V,
|
|
EMI_DQS0 | STRENGTH(0) | VE_2_5V,
|
|
EMI_DQS1 | STRENGTH(0) | VE_2_5V,
|
|
#endif
|
|
/* debug port */
|
|
PWM1_DUART_TX | STRENGTH(S4MA), /* strength is TBD */
|
|
PWM0_DUART_RX | STRENGTH(S4MA), /* strength is TBD */
|
|
|
|
/* lcd */
|
|
LCD_VSYNC | STRENGTH(S12MA),
|
|
LCD_HSYNC | STRENGTH(S12MA),
|
|
LCD_ENABE | STRENGTH(S12MA),
|
|
LCD_DOTCLOCK | STRENGTH(S12MA),
|
|
LCD_D17 | STRENGTH(S12MA),
|
|
LCD_D16 | STRENGTH(S12MA),
|
|
LCD_D15 | STRENGTH(S12MA),
|
|
LCD_D14 | STRENGTH(S12MA),
|
|
LCD_D13 | STRENGTH(S12MA),
|
|
LCD_D12 | STRENGTH(S12MA),
|
|
LCD_D11 | STRENGTH(S12MA),
|
|
LCD_D10 | STRENGTH(S12MA),
|
|
LCD_D9 | STRENGTH(S12MA),
|
|
LCD_D8 | STRENGTH(S12MA),
|
|
LCD_D7 | STRENGTH(S12MA),
|
|
LCD_D6 | STRENGTH(S12MA),
|
|
LCD_D5 | STRENGTH(S12MA),
|
|
LCD_D4 | STRENGTH(S12MA),
|
|
LCD_D3 | STRENGTH(S12MA),
|
|
LCD_D2 | STRENGTH(S12MA),
|
|
LCD_D1 | STRENGTH(S12MA),
|
|
LCD_D0 | STRENGTH(S12MA),
|
|
|
|
/* LCD usage currently unknown */
|
|
LCD_CS, /* used as SPI SS */
|
|
LCD_RS, /* used as SPI CLK */
|
|
/* keep the display in reset state */
|
|
LCD_RESET_GPIO | STRENGTH(S4MA) | GPIO_OUT | GPIO_VALUE(0),
|
|
LCD_WR, /* used as SPI MOSI */
|
|
|
|
/* I2C to the MMA7455L, KXTE9, AT24C08 (DCID), AT24C128B (ID EEPROM) and QN8005B */
|
|
I2C_SDA,
|
|
I2C_CLK,
|
|
|
|
/* Rotary decoder (external pull ups) */
|
|
ROTARYA,
|
|
ROTARYB,
|
|
|
|
/* the chumby bend (external pull up) */
|
|
PWM4_GPIO | GPIO_IN,
|
|
|
|
/* backlight control, to be controled by PWM, here we only want to disable it */
|
|
PWM2_GPIO | GPIO_OUT | GPIO_VALUE(0), /* 1 enables, 0 disables the backlight */
|
|
|
|
/* USB hub reset (active low) */
|
|
AUART1_TX_GPIO | GPIO_OUT | GPIO_VALUE(0),
|
|
|
|
/* USB power (active high) */
|
|
AUART1_CTS_GPIO | GPIO_OUT | GPIO_VALUE(0),
|
|
|
|
/* Detecting if a display is connected (0 = display attached) (external pull up) */
|
|
AUART1_RTS_GPIO | GPIO_IN,
|
|
|
|
/* disable the audio amplifier */
|
|
GPMI_D08_GPIO | GPIO_OUT | GPIO_VALUE(0),
|
|
|
|
/* Head Phone detection (FIXME what level when plugged in) (external pull up) */
|
|
GPMI_D11_GPIO | GPIO_IN,
|
|
|
|
#if 0
|
|
/* Enable the local 5V (FIXME what to do when the bootloader runs) */
|
|
GPMI_D12_GPIO | GPIO_OUT | GPIO_VALUE(1),
|
|
#endif
|
|
|
|
/* not used pins */
|
|
GPMI_D09_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_D10_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_D13_GPIO | GPIO_IN | PULLUP(1),
|
|
|
|
/* unknown. Not connected to anything than test pin J113 */
|
|
GPMI_D14_GPIO | GPIO_IN | PULLUP(1),
|
|
|
|
/* unknown. Not connected to anything than test pin J114 */
|
|
GPMI_D15_GPIO | GPIO_IN | PULLUP(1),
|
|
|
|
/* NAND controller (Note: There is no NAND device on the board) */
|
|
GPMI_D00 | PULLUP(1),
|
|
GPMI_D01 | PULLUP(1),
|
|
GPMI_D02 | PULLUP(1),
|
|
GPMI_D03 | PULLUP(1),
|
|
GPMI_D04 | PULLUP(1),
|
|
GPMI_D05 | PULLUP(1),
|
|
GPMI_D06 | PULLUP(1),
|
|
GPMI_D07 | PULLUP(1),
|
|
GPMI_CE0N,
|
|
GPMI_RDY0 | PULLUP(1),
|
|
GPMI_WRN, /* kernel tries here with 12 mA */
|
|
GPMI_RDN, /* kernel tries here with 12 mA */
|
|
GPMI_WPM, /* kernel tries here with 12 mA */
|
|
GPMI_CLE,
|
|
GPMI_ALE,
|
|
|
|
/* SD card interface */
|
|
SSP1_DATA0 | PULLUP(1), /* available at J201 */
|
|
SSP1_DATA1 | PULLUP(1), /* available at J200 */
|
|
SSP1_DATA2 | PULLUP(1), /* available at J205 */
|
|
SSP1_DATA3 | PULLUP(1), /* available at J204 */
|
|
SSP1_SCK, /* available at J202 */
|
|
SSP1_CMD | PULLUP(1), /* available at J203 */
|
|
SSP1_DETECT | PULLUP(1), /* only connected to test pin J115 */
|
|
|
|
/* other not used pins */
|
|
GPMI_CE1N_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_CE2N_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_RDY1_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_RDY2_GPIO | GPIO_IN | PULLUP(1),
|
|
GPMI_RDY3_GPIO | GPIO_IN | PULLUP(1),
|
|
};
|
|
|
|
static int falconwing_mem_init(void)
|
|
{
|
|
arm_add_mem_device("ram0", IMX_MEMORY_BASE, 64 * 1024 * 1024);
|
|
|
|
return 0;
|
|
}
|
|
mem_initcall(falconwing_mem_init);
|
|
|
|
#define GPIO_USB_HUB_RESET 29
|
|
#define GPIO_USB_HUB_POWER 26
|
|
|
|
static void falconwing_init_usb(void)
|
|
{
|
|
/* power USB hub */
|
|
gpio_direction_output(GPIO_USB_HUB_POWER, 1);
|
|
mdelay(1);
|
|
/* bring USB hub out of reset */
|
|
gpio_direction_output(GPIO_USB_HUB_RESET, 1);
|
|
|
|
imx23_usb_phy_enable();
|
|
|
|
add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_USB_BASE, NULL);
|
|
}
|
|
|
|
static int falconwing_devices_init(void)
|
|
{
|
|
int i;
|
|
|
|
/* initizalize gpios */
|
|
for (i = 0; i < ARRAY_SIZE(pad_setup); i++)
|
|
imx_gpio_mode(pad_setup[i]);
|
|
|
|
add_generic_device("mxs_mci", 0, NULL, IMX_SSP1_BASE, 0x2000,
|
|
IORESOURCE_MEM, &mci_pdata);
|
|
add_generic_device("stmfb", 0, NULL, IMX_FB_BASE, 4096,
|
|
IORESOURCE_MEM, &fb_mode);
|
|
|
|
falconwing_init_usb();
|
|
|
|
armlinux_set_architecture(MACH_TYPE_CHUMBY);
|
|
|
|
default_environment_path_set("/dev/disk0.1");
|
|
|
|
return 0;
|
|
}
|
|
|
|
device_initcall(falconwing_devices_init);
|
|
|
|
static int falconwing_console_init(void)
|
|
{
|
|
barebox_set_model("Chumby Falconwing");
|
|
barebox_set_hostname("falconwing");
|
|
|
|
add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192,
|
|
IORESOURCE_MEM, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
console_initcall(falconwing_console_init);
|