- 根目录:
- arch
- arm
- mach-omap2
- board-omap3beagle.c
/*
* linux/arch/arm/mach-omap2/board-omap3beagle.c
*
* Copyright (C) 2008 Texas Instruments
*
* Modified from mach-omap2/board-3430sdp.c
*
* Initial code: Syed Mohammed Khasim
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/opp.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>
#include <linux/mmc/host.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>
#include <plat/board.h>
#include "common.h"
#include <video/omapdss.h>
#include <video/omap-panel-dvi.h>
#include <plat/gpmc.h>
#include <plat/nand.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
#include "mux.h"
#include "hsmmc.h"
#include "pm.h"
#include "common-board-devices.h"
/*
* OMAP3 Beagle revision
* Run time detection of Beagle revision is done by reading GPIO.
* GPIO ID -
* AXBX = GPIO173, GPIO172, GPIO171: 1 1 1
* C1_3 = GPIO173, GPIO172, GPIO171: 1 1 0
* C4 = GPIO173, GPIO172, GPIO171: 1 0 1
* XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
* XMC = GPIO173, GPIO172, GPIO171: 0 1 0
*/
enum {
OMAP3BEAGLE_BOARD_UNKN = 0,
OMAP3BEAGLE_BOARD_AXBX,
OMAP3BEAGLE_BOARD_C1_3,
OMAP3BEAGLE_BOARD_C4,
OMAP3BEAGLE_BOARD_XM,
OMAP3BEAGLE_BOARD_XMC,
};
static u8 omap3_beagle_version;
/*
* Board-specific configuration
* Defaults to BeagleBoard-xMC
*/
static struct {
int mmc1_gpio_wp;
int usb_pwr_level;
int reset_gpio;
int usr_button_gpio;
} beagle_config = {
.mmc1_gpio_wp = -EINVAL,
.usb_pwr_level = GPIOF_OUT_INIT_LOW,
.reset_gpio = 129,
.usr_button_gpio = 4,
};
static struct gpio omap3_beagle_rev_gpios[] __initdata = {
{ 171, GPIOF_IN, "rev_id_0" },
{ 172, GPIOF_IN, "rev_id_1" },
{ 173, GPIOF_IN, "rev_id_2" },
};
static void __init omap3_beagle_init_rev(void)
{
int ret;
u16 beagle_rev = 0;
omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
ret = gpio_request_array(omap3_beagle_rev_gpios,
ARRAY_SIZE(omap3_beagle_rev_gpios));
if (ret < 0) {
printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
return;
}
beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
| (gpio_get_value(173) << 2);
gpio_free_array(omap3_beagle_rev_gpios,
ARRAY_SIZE(omap3_beagle_rev_gpios));
switch (beagle_rev) {
case 7:
printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
beagle_config.mmc1_gpio_wp = 29;
beagle_config.reset_gpio = 170;
beagle_config.usr_button_gpio = 7;
break;
case 6:
printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
beagle_config.mmc1_gpio_wp = 23;
beagle_config.reset_gpio = 170;
beagle_config.usr_button_gpio = 7;
break;
case 5:
printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
beagle_config.mmc1_gpio_wp = 23;
beagle_config.reset_gpio = 170;
beagle_config.usr_button_gpio = 7;
break;
case 0:
printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
break;
case 2:
printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
break;
default:
printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
}
}
static struct mtd_partition omap3beagle_nand_partitions[] = {
/* All the partition sizes are listed in terms of NAND block size */
{
.name = "X-Loader",
.offset = 0,
.size = 4 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
{
.name = "U-Boot",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
.size = 15 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
{
.name = "U-Boot Env",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
.size = 1 * NAND_BLOCK_SIZE,
},
{
.name = "Kernel",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
.size = 32 * NAND_BLOCK_SIZE,
},
{
.name = "File System",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
.size = MTDPART_SIZ_FULL,
},
};
/* DSS */
static int beagle_enable_dvi(struct omap_dss_device *dssdev)
{
if (gpio_is_valid(dssdev->reset_gpio))
gpio_set_value(dssdev->reset_gpio, 1);
return 0;
}
static void beagle_disable_dvi(struct omap_dss_device *dssdev)
{
if (gpio_is_valid(dssdev->reset_gpio))
gpio_set_value(dssdev->reset_gpio, 0);
}
static struct panel_dvi_platform_data dvi_panel = {
.platform_enable = beagle_enable_dvi,
.platform_disable = beagle_disable_dvi,
.i2c_bus_num = 3,
};
static struct omap_dss_device beagle_dvi_device = {
.type = OMAP_DISPLAY_TYPE_DPI,
.name = "dvi",
.driver_name = "dvi",
.data = &dvi_panel,
.phy.dpi.data_lines = 24,
.reset_gpio = -EINVAL,
};
static struct omap_dss_device beagle_tv_device = {
.name = "tv",
.driver_name = "venc",
.type = OMAP_DISPLAY_TYPE_VENC,
.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
};
static struct omap_dss_device *beagle_dss_devices[] = {
&beagle_dvi_device,
&beagle_tv_device,
};
static struct omap_dss_board_info beagle_dss_data = {
.num_devices = ARRAY_SIZE(beagle_dss_devices),
.devices = beagle_dss_devices,
.default_device = &beagle_dvi_device,
};
static void __init beagle_display_init(void)
{
int r;
r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
"DVI reset");
if (r < 0)
printk(KERN_ERR "Unable to get DVI reset GPIO\n");
}
#include "sdram-micron-mt46h32m32lf-6.h"
static struct omap2_hsmmc_info mmc[] = {
{
.mmc = 1,
.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
.gpio_wp = -EINVAL,
.deferred = true,
},
{} /* Terminator */
};
static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};
static struct regulator_consumer_supply beagle_vsim_supply[] = {
REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
};
static struct gpio_led gpio_leds[];
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
int r;
mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
/* gpio + 0 is "mmc0_cd" (input/IRQ) */
mmc[0].gpio_cd = gpio + 0;
omap_hsmmc_late_init(mmc);
/*
* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
* high / others active low)
* DVI reset GPIO is different between beagle revisions
*/
/* Valid for all -xM revisions */
if (cpu_is_omap3630()) {
/*
* gpio + 1 on Xm controls the TFP410's enable line (active low)
* gpio + 2 control varies depending on the board rev as below:
* P7/P8 revisions(prototype): Camera EN
* A2+ revisions (production): LDO (DVI, serial, led blocks)
*/
r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
"nDVI_PWR_EN");
if (r)
pr_err("%s: unable to configure nDVI_PWR_EN\n",
__func__);
r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
"DVI_LDO_EN");
if (r)
pr_err("%s: unable to configure DVI_LDO_EN\n",
__func__);
} else {
/*
* REVISIT: need ehci-omap hooks for external VBUS
* power switch and overcurrent detect
*/
if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
pr_err("%s: unable to configure EHCI_nOC\n", __func__);
}
beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;
gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
"nEN_USB_PWR");
/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
return 0;
}
static struct twl4030_gpio_platform_data beagle_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
.irq_end = TWL4030_GPIO_IRQ_END,
.use_leds = true,
.pullups = BIT(1),
.pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
| BIT(15) | BIT(16) | BIT(17),
.setup = beagle_twl_gpio_setup,
};
/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data beagle_vmmc1 = {
.constraints = {
.min_uV = 1850000,
.max_uV = 3150000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(beagle_vmmc1_supply),
.consumer_supplies = beagle_vmmc1_supply,
};
/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data beagle_vsim = {
.constraints = {
.min_uV = 1800000,
.max_uV = 3000000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(beagle_vsim_supply),
.consumer_supplies = beagle_vsim_supply,
};
static struct twl4030_platform_data beagle_twldata = {
/* platform_data for children goes here */
.gpio = &beagle_gpio_data,
.vmmc1 = &beagle_vmmc1,
.vsim = &beagle_vsim,
};
static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
{
I2C_BOARD_INFO("eeprom", 0x50),
},
};
static int __init omap3_beagle_i2c_init(void)
{
omap3_pmic_get_config(&beagle_twldata,
TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
TWL_COMMON_PDATA_AUDIO,
TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
beagle_twldata.vpll2->constraints.name = "VDVI";
omap3_pmic_init("twl4030", &beagle_twldata);
/* Bus 3 is attached to the DVI port where devices like the pico DLP
* projector don't work reliably with 400kHz */
omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
return 0;
}
static struct gpio_led gpio_leds[] = {
{
.name = "beagleboard::usr0",
.default_trigger = "heartbeat",
.gpio = 150,
},
{
.name = "beagleboard::usr1",
.default_trigger = "mmc0",
.gpio = 149,
},
{
.name = "beagleboard::pmu_stat",
.gpio = -EINVAL, /* gets replaced */
.active_low = true,
},
};
static struct gpio_led_platform_data gpio_led_info = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
static struct platform_device leds_gpio = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &gpio_led_info,
},
};
static struct gpio_keys_button gpio_buttons[] = {
{
.code = BTN_EXTRA,
/* Dynamically assigned depending on board */
.gpio = -EINVAL,
.desc = "user",
.wakeup = 1,
},
};
static struct gpio_keys_platform_data gpio_key_info = {
.buttons = gpio_buttons,
.nbuttons = ARRAY_SIZE(gpio_buttons),
};
static struct platform_device keys_gpio = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &gpio_key_info,
},
};
static struct platform_device madc_hwmon = {
.name = "twl4030_madc_hwmon",
.id = -1,
};
static struct platform_device *omap3_beagle_devices[] __initdata = {
&leds_gpio,
&keys_gpio,
&madc_hwmon,
};
static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
.phy_reset = true,
.reset_gpio_port[0] = -EINVAL,
.reset_gpio_port[1] = 147,
.reset_gpio_port[2] = -EINVAL
};
#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif
static void __init beagle_opp_init(void)
{
int r = 0;
/* Initialize the omap3 opp table */
if (omap3_opp_init()) {
pr_err("%s: opp default init failed\n", __func__);
return;
}
/* Custom OPP enabled for all xM versions */
if (cpu_is_omap3630()) {
struct device *mpu_dev, *iva_dev;
mpu_dev = omap_device_get_by_hwmod_name("mpu");
iva_dev = omap_device_get_by_hwmod_name("iva");
if (!mpu_dev || !iva_dev) {
pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
__func__, mpu_dev, iva_dev);
return;
}
/* Enable MPU 1GHz and lower opps */
r = opp_enable(mpu_dev, 800000000);
/* TODO: MPU 1GHz needs SR and ABB */
/* Enable IVA 800MHz and lower opps */
r |= opp_enable(iva_dev, 660000000);
/* TODO: DSP 800MHz needs SR and ABB */
if (r) {
pr_err("%s: failed to enable higher opp %d\n",
__func__, r);
/*
* Cleanup - disable the higher freqs - we dont care
* about the results
*/
opp_disable(mpu_dev, 800000000);
opp_disable(iva_dev, 660000000);
}
}
return;
}
static void __init omap3_beagle_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
omap3_beagle_init_rev();
if (beagle_config.mmc1_gpio_wp != -EINVAL)
omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
omap_hsmmc_init(mmc);
omap3_beagle_i2c_init();
gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
omap_display_init(&beagle_dss_data);
omap_serial_init();
omap_sdrc_init(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
omap_mux_init_gpio(170, OMAP_PIN_INPUT);
/* REVISIT leave DVI powered down until it's needed ... */
gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
ARRAY_SIZE(omap3beagle_nand_partitions));
/* Ensure msecure is mux'd to be able to set the RTC. */
omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
/* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
beagle_display_init();
beagle_opp_init();
}
MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
.atag_offset = 0x100,
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3_init_early,
.init_irq = omap3_init_irq,
.handle_irq = omap3_intc_handle_irq,
.init_machine = omap3_beagle_init,
.timer = &omap3_secure_timer,
.restart = omap_prcm_restart,
MACHINE_END