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linux/arch/arm/mach-omap2/board-omap3beagle.c

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/*
* 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 <plat/common.h>
#include <video/omapdss.h>
#include <video/omap-panel-generic-dpi.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 "timer-gp.h"
#include "pm.h"
#define NAND_BLOCK_SIZE SZ_128K
/*
* 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
* XM = GPIO173, GPIO172, GPIO171: 0 0 0
*/
enum {
OMAP3BEAGLE_BOARD_UNKN = 0,
OMAP3BEAGLE_BOARD_AXBX,
OMAP3BEAGLE_BOARD_C1_3,
OMAP3BEAGLE_BOARD_C4,
OMAP3BEAGLE_BOARD_XM,
};
static u8 omap3_beagle_version;
static u8 omap3_beagle_get_rev(void)
{
return omap3_beagle_version;
}
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(171, "rev_id_0");
if (ret < 0)
goto fail0;
ret = gpio_request(172, "rev_id_1");
if (ret < 0)
goto fail1;
ret = gpio_request(173, "rev_id_2");
if (ret < 0)
goto fail2;
gpio_direction_input(171);
gpio_direction_input(172);
gpio_direction_input(173);
beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
| (gpio_get_value(173) << 2);
switch (beagle_rev) {
case 7:
printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
break;
case 6:
printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
break;
case 5:
printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
break;
case 0:
printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
break;
default:
printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
}
return;
fail2:
gpio_free(172);
fail1:
gpio_free(171);
fail0:
printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
return;
}
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,
},
};
static struct omap_nand_platform_data omap3beagle_nand_data = {
.options = NAND_BUSWIDTH_16,
.parts = omap3beagle_nand_partitions,
.nr_parts = ARRAY_SIZE(omap3beagle_nand_partitions),
.dma_channel = -1, /* disable DMA in OMAP NAND driver */
.nand_setup = NULL,
.dev_ready = NULL,
};
/* 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_generic_dpi_data dvi_panel = {
.name = "generic",
.platform_enable = beagle_enable_dvi,
.platform_disable = beagle_disable_dvi,
};
static struct omap_dss_device beagle_dvi_device = {
.type = OMAP_DISPLAY_TYPE_DPI,
.name = "dvi",
.driver_name = "generic_dpi_panel",
.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 struct regulator_consumer_supply beagle_vdac_supply =
REGULATOR_SUPPLY("vdda_dac", "omapdss_venc");
static struct regulator_consumer_supply beagle_vdvi_supplies[] = {
REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi1"),
};
static void __init beagle_display_init(void)
{
int r;
r = gpio_request(beagle_dvi_device.reset_gpio, "DVI reset");
if (r < 0) {
printk(KERN_ERR "Unable to get DVI reset GPIO\n");
return;
}
gpio_direction_output(beagle_dvi_device.reset_gpio, 0);
}
#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 = 29,
},
{} /* Terminator */
};
static struct regulator_consumer_supply beagle_vmmc1_supply = {
.supply = "vmmc",
};
static struct regulator_consumer_supply beagle_vsim_supply = {
.supply = "vmmc_aux",
};
static struct gpio_led gpio_leds[];
static int beagle_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio)
{
int r;
if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
mmc[0].gpio_wp = -EINVAL;
} else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
(omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
omap_mux_init_gpio(23, OMAP_PIN_INPUT);
mmc[0].gpio_wp = 23;
} else {
omap_mux_init_gpio(29, OMAP_PIN_INPUT);
}
/* gpio + 0 is "mmc0_cd" (input/IRQ) */
mmc[0].gpio_cd = gpio + 0;
omap2_hsmmc_init(mmc);
/* link regulators to MMC adapters */
beagle_vmmc1_supply.dev = mmc[0].dev;
beagle_vsim_supply.dev = mmc[0].dev;
/* REVISIT: need ehci-omap hooks for external VBUS
* power switch and overcurrent detect
*/
if (omap3_beagle_get_rev() != OMAP3BEAGLE_BOARD_XM) {
r = gpio_request(gpio + 1, "EHCI_nOC");
if (!r) {
r = gpio_direction_input(gpio + 1);
if (r)
gpio_free(gpio + 1);
}
if (r)
pr_err("%s: unable to configure EHCI_nOC\n", __func__);
}
/*
* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
* high / others active low)
*/
gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM)
gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
else
gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
/* DVI reset GPIO is different between beagle revisions */
if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM)
beagle_dvi_device.reset_gpio = 129;
else
beagle_dvi_device.reset_gpio = 170;
/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
/*
* gpio + 1 on Xm controls the TFP410's enable line (active low)
* gpio + 2 control varies depending on the board rev as follows:
* P7/P8 revisions(prototype): Camera EN
* A2+ revisions (production): LDO (supplies DVI, serial, led blocks)
*/
if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
r = gpio_request(gpio + 1, "nDVI_PWR_EN");
if (!r) {
r = gpio_direction_output(gpio + 1, 0);
if (r)
gpio_free(gpio + 1);
}
if (r)
pr_err("%s: unable to configure nDVI_PWR_EN\n",
__func__);
r = gpio_request(gpio + 2, "DVI_LDO_EN");
if (!r) {
r = gpio_direction_output(gpio + 2, 1);
if (r)
gpio_free(gpio + 2);
}
if (r)
pr_err("%s: unable to configure DVI_LDO_EN\n",
__func__);
}
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 = 1,
.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 = 1,
.consumer_supplies = &beagle_vsim_supply,
};
/* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
static struct regulator_init_data beagle_vdac = {
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = 1,
.consumer_supplies = &beagle_vdac_supply,
};
/* VPLL2 for digital video outputs */
static struct regulator_init_data beagle_vpll2 = {
.constraints = {
.name = "VDVI",
.min_uV = 1800000,
.max_uV = 1800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.valid_ops_mask = REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(beagle_vdvi_supplies),
.consumer_supplies = beagle_vdvi_supplies,
};
static struct twl4030_usb_data beagle_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
static struct twl4030_codec_audio_data beagle_audio_data;
static struct twl4030_codec_data beagle_codec_data = {
.audio_mclk = 26000000,
.audio = &beagle_audio_data,
};
static struct twl4030_platform_data beagle_twldata = {
.irq_base = TWL4030_IRQ_BASE,
.irq_end = TWL4030_IRQ_END,
/* platform_data for children goes here */
.usb = &beagle_usb_data,
.gpio = &beagle_gpio_data,
.codec = &beagle_codec_data,
.vmmc1 = &beagle_vmmc1,
.vsim = &beagle_vsim,
.vdac = &beagle_vdac,
.vpll2 = &beagle_vpll2,
};
static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
{
I2C_BOARD_INFO("twl4030", 0x48),
.flags = I2C_CLIENT_WAKE,
.irq = INT_34XX_SYS_NIRQ,
.platform_data = &beagle_twldata,
},
};
static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
{
I2C_BOARD_INFO("eeprom", 0x50),
},
};
static int __init omap3_beagle_i2c_init(void)
{
omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
ARRAY_SIZE(beagle_i2c_boardinfo));
/* 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,
.gpio = 7,
.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 void __init omap3_beagle_init_early(void)
{
omap2_init_common_infrastructure();
omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
}
static void __init omap3_beagle_init_irq(void)
{
omap_init_irq();
#ifdef CONFIG_OMAP_32K_TIMER
omap2_gp_clockevent_set_gptimer(12);
#endif
}
static struct platform_device *omap3_beagle_devices[] __initdata = {
&leds_gpio,
&keys_gpio,
};
static void __init omap3beagle_flash_init(void)
{
u8 cs = 0;
u8 nandcs = GPMC_CS_NUM + 1;
/* find out the chip-select on which NAND exists */
while (cs < GPMC_CS_NUM) {
u32 ret = 0;
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
if ((ret & 0xC00) == 0x800) {
printk(KERN_INFO "Found NAND on CS%d\n", cs);
if (nandcs > GPMC_CS_NUM)
nandcs = cs;
}
cs++;
}
if (nandcs > GPMC_CS_NUM) {
printk(KERN_INFO "NAND: Unable to find configuration "
"in GPMC\n ");
return;
}
if (nandcs < GPMC_CS_NUM) {
omap3beagle_nand_data.cs = nandcs;
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
if (gpmc_nand_init(&omap3beagle_nand_data) < 0)
printk(KERN_ERR "Unable to register NAND device\n");
}
}
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 struct omap_musb_board_data musb_board_data = {
.interface_type = MUSB_INTERFACE_ULPI,
.mode = MUSB_OTG,
.power = 100,
};
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 XM */
if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
struct omap_hwmod *mh = omap_hwmod_lookup("mpu");
struct omap_hwmod *dh = omap_hwmod_lookup("iva");
struct device *dev;
if (!mh || !dh) {
pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
__func__, mh, dh);
return;
}
/* Enable MPU 1GHz and lower opps */
dev = &mh->od->pdev.dev;
r = opp_enable(dev, 800000000);
/* TODO: MPU 1GHz needs SR and ABB */
/* Enable IVA 800MHz and lower opps */
dev = &dh->od->pdev.dev;
r |= opp_enable(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
*/
dev = &mh->od->pdev.dev;
opp_disable(dev, 800000000);
dev = &dh->od->pdev.dev;
opp_disable(dev, 660000000);
}
}
return;
}
static void __init omap3_beagle_init(void)
{
omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
omap3_beagle_init_rev();
omap3_beagle_i2c_init();
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
omap_display_init(&beagle_dss_data);
omap_serial_init();
omap_mux_init_gpio(170, OMAP_PIN_INPUT);
gpio_request(170, "DVI_nPD");
/* REVISIT leave DVI powered down until it's needed ... */
gpio_direction_output(170, true);
usb_musb_init(&musb_board_data);
usbhs_init(&usbhs_bdata);
omap3beagle_flash_init();
/* 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 */
.boot_params = 0x80000100,
.reserve = omap_reserve,
.map_io = omap3_map_io,
.init_early = omap3_beagle_init_early,
.init_irq = omap3_beagle_init_irq,
.init_machine = omap3_beagle_init,
.timer = &omap_timer,
MACHINE_END
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