Support Letux Cortex 15 Evaluation Module

if TARGET_LC15EVM

config SYS_BOARD

	default "lc15evm"

config SYS_VENDOR

	default "goldelico"

config SYS_CONFIG_NAME

	default "letux_lc15_evm"

config DUAL_RANK_DDR3

	bool "Dual-rank memory (4GB)"

endif

LC15 Eval Board with LC15 CPU

M:	Nikolaus Schaller <hns@goldelico.com>

S:	Maintained

F:	board/goldelico/letux-lc15evm

F:	include/configs/letux_lc15_evm.h

F:	configs/letux_lc15_evm_defconfig

#

# (C) Copyright 2000, 2001, 2002

# Wolfgang Denk, DENX Software Engineering, wd@denx.de.

#

# SPDX-License-Identifier:	GPL-2.0+

#

obj-y	:= letux-lc15evm.o

/*

 * basically the same as the Letux Cortex 15

 * except that we change the UART3 pinmux because it is wired up

 * differently

 */

/* move away definition by included file */

#define board_init board_init_overwritten

#define set_muxconf_regs set_muxconf_regs_inherited

#define CONFIG_MORE_FDT more_set_fdtfile

extern void set_muxconf_regs_inherited(void);

#define sysinfo sysinfo_disabled

#include "../../goldelico/letux-cortex15/lc15.c"

#undef sysinfo

#undef set_muxconf_regs

#undef board_init

const struct omap_sysinfo sysinfo = {

	"Board: Letux Cortex 15 Evaluation Board\n"

};

const struct pad_conf_entry core_padconf_array_essential_pyra[] = {

	/* enable SDIO4 (right SD slot) */

	{UART3_RX_IRRX, (PTU | IEN| M4)}, /*  SDIO4_CLK */

	{UART3_TX_IRTX, (PTU | IEN| M4)},  /*  SDIO4_CMD */

	{UART5_RX, (PTU | IEN| M4)},  /*  SDIO4_DATA1 */

	{UART5_TX, (PTU | IEN| M4)},  /*  SDIO4_DATA2 */

	{UART5_CTS, (PTU | IEN| M4)},  /*  SDIO4_DATA0 */

	{UART5_RTS, (PTU | IEN| M4)},  /*  SDIO4_DATA3 */

	/* switch UART3 to different pins */

	{RFBI_DATA1, (PTU | IEN | M4)},  /*  UART3_RX_IRRX */

	{RFBI_DATA2, (M4)}, /*  UART3_TX_IRTX */

	/* enable I2C1..5 pullups */

	{I2C1_PMIC_SCL, (PTU | IEN | M0)}, /* I2C1_SCL */

	{I2C1_PMIC_SDA, (PTU | IEN | M0)}, /* I2C1_SDA */

	{I2C2_SCL, (PTU | IEN | M0)}, /* I2C2_SCL */

	{I2C2_SDA, (PTU | IEN | M0)}, /* I2C2_SDA */

	{I2C3_SCL, (PTU | IEN | M0)}, /* I2C3_SCL */

	{I2C3_SDA, (PTU | IEN | M0)}, /* I2C3_SDA */

	{I2C4_SCL, (PTU | IEN | M0)}, /* I2C4_SCL */

	{I2C4_SDA, (PTU | IEN | M0)}, /* I2C4_SDA */

	/* some resets */

	{MCSPI1_CS1, (PTU | IEN | M6)}, /* GPIO5_144: peripheral reset */

	{RFBI_DATA5, (PTD | IEN | M6)}, /* GPIO6_171: pull down modem ignite */

	{HSI2_CAFLAG, (PTU | IEN | M6)}, /* GPIO3_80: usb hub reset */

	{TIMER8_PWM_EVT, (PTU | IEN | M6)}, /* GPIO8_230: keyboard backlight - pulled high */

	/* main board revision detection */

	{RFBI_HSYNC0, (PTU | IEN | M6)}, /* GPIO6_160: rev1 */

	{GPIO6_182, (PTU | IEN | M6)}, /* GPIO6_182: rev2 */

	{GPIO6_185, (PTU | IEN | M6)}, /* GPIO6_185: rev3 */

};

void set_muxconf_regs(void)

{

	set_muxconf_regs_inherited();

	do_set_mux((*ctrl)->control_padconf_core_base,

		   core_padconf_array_essential_pyra,

		   sizeof(core_padconf_array_essential_pyra) /

		   sizeof(struct pad_conf_entry));

}

/* U-Boot only code */

#if !defined(CONFIG_SPL_BUILD)

// FIXME: add a bq2427x driver?

/* I2C chip addresses, bq24297 */

#define BQ24297_BUS	1	/* I2C2 */

#define BQ24297_ADDR	0x6b

static inline int bq24297_i2c_write_u8(u8 reg, u8 val)

{

	int org_bus_num;

	int ret;

	org_bus_num = i2c_get_bus_num();

	i2c_set_bus_num(BQ24297_BUS);	/* select I2C2 */

	ret = i2c_write(BQ24297_ADDR, reg, 1, &val, 1);

	i2c_set_bus_num(org_bus_num);

	return ret;

}

static inline int bq24297_i2c_read_u8(u8 reg, u8 *val)

{

	int org_bus_num;

	int ret;

	org_bus_num = i2c_get_bus_num();

	i2c_set_bus_num(BQ24297_BUS);	/* select I2C2 */

	ret = i2c_read(BQ24297_ADDR, reg, 1, val, 1);

	i2c_set_bus_num(org_bus_num);

	return ret;

}

int bq2429x_battery_present(void)

{

	u8 reg;

	if (bq24297_i2c_read_u8(0x09, &reg)) {

		printf("bq24297: no response from REG9\n");

		return 0;

	}

#if 0

	printf("bq24297: r9 = %02x\n", reg);

#endif

	return !(reg & 0x03);	/* no NTC fault - assume battery is inserted */

}

/**

 * @brief tca642x_init - Pyra default values for the GPIO expander

 * input reg, output reg, polarity reg, configuration reg (0=output)

 */

#define P00_HDMI_CT_HPD	0x01

#define P01_HDMI_LS_OE	0x02

#define P02_NONE	0x04

#define P03_NONE	0x08

#define P04_VIBRA	0x10	/* n/a in Revision 5.1 and later */

#define P05_FAULT2	0x20	/* also L-RED */

#define P06_NONE	0x40

#define P07_NONE	0x80

#define P10_EN_USB	0x01

#define P11_EN_HOST1	0x02

#define P12_EN_HOST2	0x04

#define P13_CHG_INT	0x08

#define P14_NONE	0x10

#define P15_NONE	0x20

#define P16_MICPRES	0x40	/* MIC-INT in Revision 5.1 and later */

#define P17_EN_MODEM	0x80

#define P20_SD_HS_AMP	0x01

#define P21_CHG_STAT	0x02	/* also PWR-RED */

#define P22_PWR_GREEN	0x04	/* NONE in Revision 5.1 and later */

#define P23_PWR_BLUE	0x08

#define P23_EN_OTG	0x08	/* EN_OTG in Revision 5.1 and later */

#define P24_EN_ESATA	0x10	/* NONE in Revision 5.1 and later */

#define P25_FAULT1	0x20	/* also R-RED */

#define P26_NONE	0x40

#define P27_NONE	0x80

struct tca642x_bank_info pyra_tca642x_init[] = {

	{ .input_reg = 0x00,	/* not really initialized */

	  .output_reg = 0x00,

	  .polarity_reg = 0x00,

	  .configuration_reg = 0x00 },	/* all others are outputs */

	{ .input_reg = 0x00,

	  .output_reg = 0x00,

	  .polarity_reg = 0x00,

	  .configuration_reg = P16_MICPRES | P13_CHG_INT },	/* all others are outputs */

	{ .input_reg = 0x00,

	  .output_reg = 0x00,

	  .polarity_reg = 0x00,

	  .configuration_reg = P20_SD_HS_AMP | P21_CHG_STAT | P22_PWR_GREEN | P23_PWR_BLUE },	/* all others are outputs */

};

/*

 * Board Revision Detection

 *

 * gpio6_160, gpio6_182 and gpio6_185 can optionally be pulled down

 * by 10k resistors.

 */

static int get_pyra_mainboard_revision(void)

{

	static int revision = -1;

	static char revtable[8] = {	/* revision table defined by pull-down R1901, R1902, R1903 */

		[7] = 49 + 1,	/* some 5.0 boards have wrong version resistors so they report themselves as 4.9 */

		[6] = 50,

		[5] = 51,

		[3] = 52,

		[4] = 53,

		[2] = 54,

		[1] = 55,

		[0] = 56,

	};

	if (revision == -1) {

		if (!gpio_request(160, "rev1") &&

		    !gpio_request(182, "rev2") &&

		    !gpio_request(185, "rev3")) {

			gpio_direction_input(160);

			gpio_direction_input(182);

			gpio_direction_input(185);

			revision = gpio_get_value(185) << 2 |

				gpio_get_value(182) << 1 |

				gpio_get_value(160);

#if 0

			printf("version code 0x%01x\n", revision);

#endif

			revision = revtable[revision];

		} else {

			printf("Error: unable to get board revision GPIOs\n");

		}

	}

	/* FIXME: turn off pull-up to save up ca. 50-750µA */

	printf("Found Pyra MB V%d.%d\n", revision/10, revision%10);

	return revision;

}

/* called from set_fdtfile in lc15.c */

void CONFIG_MORE_FDT(char *devtree)

{

	int len;

	int rev = get_pyra_mainboard_revision();

	len = strlen(devtree);

	if (len < 5)

		return;	/* some error */

	/* extend by overwriting ".dtb" */

	sprintf(devtree+len-4, "+%s-v%d.%d.dtb", "pyra", rev/10, rev%10);

}

/**

 * @brief board_init for Pyra

 *

 * @return 0

 */

int board_init(void)

{

	/* do the same as on LC15 board/EVM */

	gpmc_init();

	gd->bd->bi_arch_number = MACH_TYPE_OMAP5_SEVM;

	gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */

#if 1

	printk("Reset:  peripherals\n");

	/* but now reset peripherals */

	gpio_request(144, "peripheral-reset");

	gpio_direction_output(144, 0);	/* reset all peripheral chips (incl. tca6424) */

	udelay(1000);	/* 1ms should suffice */

	gpio_direction_output(144, 1);

	gpio_free(144);

	udelay(5000);	/* 5ms should suffice */

#endif

#if 0	// contrary to the Pyra and the GTA15 this board has no bq24297

// UNDERSTAND ME: it is important that we program the bq2429x first before

// we initialize the tca6424! Why?

// What is (sometimes) turned on and draws too much energy?

// WWAN-Module? USB DC/DC?

	if (bq24297_i2c_write_u8(0x05, 0x8a))

		printf("bq24297: could not turn off 40 sec watchdog\n");

	if (!bq2429x_battery_present()) {

		u8 reg;

		printf("bq24297: no battery found\n");

		/* if we operate from no battery:

		 * assume we are powered elsewhere and not through standard USB

		 *

		 * -> increase bq24297 current limit to at least 2A

		 * -> reduce VINDPM minimum VBUS voltage to 3.88 V

		 *

		 * Otherwise we can not safely boot into Linux, especially

		 * with higher resistance of the USB cable.

		 */

		if (bq24297_i2c_read_u8(0x00, &reg))

			printf("bq24297: no response from REG0\n");

		else {

			u8 nreg = reg;

			int ilim = reg & 0x7; /* bit 0..2 are IINLIM */

#if 1

			printf("Iin_lim found: %d\n", ilim);

#endif

			if (ilim < 6) {

				ilim = 6;	/* increase to 2A */

				nreg &= ~0x7;

				nreg |= ilim;

#if 1

				printf("Iin_lim changed %d\n", nreg & 0x7);

#endif

			}

#if 1

			printf("Vin_dpm found: %d\n", (reg >> 3) & 0x0f);

#endif

			nreg &= ~0x78;	/* bits 3..6 are VINDPM */

			nreg |= (0 << 3);	/* set level 0 = 3.88V */

#if 1

			printf("Vin_dpm changed: %d\n", (nreg >> 3) & 0x0f);

#endif

			if (nreg != reg) {

				if (bq24297_i2c_write_u8(0x00, nreg))

					printf("bq24297: could not set REG0 to %02x\n", nreg);

#if 1

				else

					printf("bq24297: r0 := %02x\n", nreg);

#endif

			}

		}

	}

#endif

#if defined(CONFIG_TCA642X)

	extern int tca642x_info(uchar chip);

	tca642x_info(CONFIG_SYS_I2C_TCA642X_ADDR);

	printk("tca6424 init\n");

	tca642x_set_inital_state(CONFIG_SYS_I2C_TCA642X_ADDR, pyra_tca642x_init);

	printk("tca6424 initialized\n");

	tca642x_info(CONFIG_SYS_I2C_TCA642X_ADDR);

#endif

	return 0;

}

#endif

CONFIG_ARM=y

CONFIG_OMAP54XX=y

CONFIG_ARMV7_LPAE=y

# CONFIG_SPL_NAND_SUPPORT is not set

CONFIG_TARGET_PYRA_LC15=y

CONFIG_SYS_CONSOLE_INFO_QUIET=y

CONFIG_VERSION_VARIABLE=y

CONFIG_SPL=y

CONFIG_SPL_OS_BOOT=y

CONFIG_HUSH_PARSER=y

CONFIG_CMD_BOOTZ=y

# CONFIG_CMD_IMLS is not set

CONFIG_CMD_ASKENV=y

# CONFIG_CMD_FLASH is not set

CONFIG_CMD_MMC=y

CONFIG_CMD_SPI=y

CONFIG_CMD_I2C=y

CONFIG_CMD_USB=y

CONFIG_CMD_DFU=y

CONFIG_CMD_GPIO=y

# CONFIG_CMD_SETEXPR is not set

CONFIG_CMD_DHCP=y

CONFIG_CMD_MII=y

CONFIG_CMD_PING=y

CONFIG_CMD_EXT2=y

CONFIG_CMD_EXT4=y

CONFIG_CMD_EXT4_WRITE=y

CONFIG_CMD_FAT=y

CONFIG_CMD_FS_GENERIC=y

CONFIG_DFU_MMC=y

CONFIG_DFU_RAM=y

CONFIG_SYS_NS16550=y

CONFIG_USB=y

CONFIG_USB_DWC3=y

CONFIG_USB_DWC3_GADGET=y

CONFIG_USB_DWC3_OMAP=y

CONFIG_USB_DWC3_PHY_OMAP=y

CONFIG_USB_STORAGE=y

CONFIG_USB_GADGET=y

CONFIG_USB_GADGET_DOWNLOAD=y

CONFIG_G_DNL_MANUFACTURER="OpenPandora"

CONFIG_G_DNL_PRODUCT="Dragonbox Pyra"

CONFIG_G_DNL_VENDOR_NUM=0x0403

CONFIG_G_DNL_PRODUCT_NUM=0xbd00

CONFIG_OF_LIBFDT=y

CONFIG_CMD_MEMTEST=y

CONFIG_CMD_TCA642X=y

CONFIG_SATA_BOOT=y

CONFIG_CMD_MEMINFO=y

CONFIG_CMD_USB_MASS_STORAGE=y

CONFIG_CMD_CACHE=y

CONFIG_DUAL_RANK_DDR3=y

CONFIG_PHYS_64BIT=y

 No newline at end of file