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// SPDX-License-Identifier: GPL-2.0+
/*
* am3517evm.c - board file for TI's AM3517 family of devices.
*
* Author: Vaibhav Hiremath <hvaibhav@ti.com>
*
* Based on ti/evm/evm.c
*
* Copyright (C) 2010
* Texas Instruments Incorporated - http://www.ti.com/
*/
#include <common.h>
#include <dm.h>
#include <ns16550.h>
#include <asm/io.h>
#include <asm/omap_musb.h>
#include <asm/arch/am35x_def.h>
#include <asm/arch/mem.h>
#include <asm/arch/mux.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/musb.h>
#include <asm/mach-types.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/musb.h>
#include <i2c.h>
#include "am3517evm.h"
DECLARE_GLOBAL_DATA_PTR;
#define AM3517_IP_SW_RESET 0x48002598
#define CPGMACSS_SW_RST (1 << 1)
#define PHY_GPIO 30
#if defined(CONFIG_SPL_BUILD)
#if defined(CONFIG_SPL_OS_BOOT)
int spl_start_uboot(void)
{
/* break into full u-boot on 'c' */
return serial_tstc() && serial_getc() == 'c';
}
#endif
#endif
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init(void)
{
gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
/* board id for Linux */
gd->bd->bi_arch_number = MACH_TYPE_OMAP3517EVM;
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
return 0;
}
#ifdef CONFIG_USB_MUSB_AM35X
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.num_eps = 16,
.ram_bits = 12,
};
static struct omap_musb_board_data musb_board_data = {
.set_phy_power = am35x_musb_phy_power,
.clear_irq = am35x_musb_clear_irq,
.reset = am35x_musb_reset,
};
static struct musb_hdrc_platform_data musb_plat = {
#if defined(CONFIG_USB_MUSB_HOST)
.mode = MUSB_HOST,
#elif defined(CONFIG_USB_MUSB_GADGET)
.mode = MUSB_PERIPHERAL,
#else
#error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
#endif
.config = &musb_config,
.power = 250,
.platform_ops = &am35x_ops,
.board_data = &musb_board_data,
};
static void am3517_evm_musb_init(void)
{
/*
* Set up USB clock/mode in the DEVCONF2 register.
* USB2.0 PHY reference clock is 13 MHz
*/
clrsetbits_le32(&am35x_scm_general_regs->devconf2,
CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
CONF2_VBDTCTEN | CONF2_DATPOL);
musb_register(&musb_plat, &musb_board_data,
(void *)AM35XX_IPSS_USBOTGSS_BASE);
}
#else
#define am3517_evm_musb_init() do {} while (0)
#endif
/*
* Routine: misc_init_r
* Description: Init i2c, ethernet, etc... (done here so udelay works)
*/
int misc_init_r(void)
{
volatile unsigned int ctr;
u32 reset;
#if !defined(CONFIG_DM_I2C)
#ifdef CONFIG_SYS_I2C_OMAP24XX
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
#endif
#endif
omap_die_id_display();
am3517_evm_musb_init();
if (gpio_request(PHY_GPIO, "gpio_30") == 0) {
/* activate PHY reset */
gpio_direction_output(PHY_GPIO, 0);
gpio_set_value(PHY_GPIO, 0);
ctr = 0;
do {
udelay(1000);
ctr++;
} while (ctr < 300);
/* deactivate PHY reset */
gpio_set_value(PHY_GPIO, 1);
/* allow the PHY to stabilize and settle down */
ctr = 0;
do {
udelay(1000);
ctr++;
} while (ctr < 300);
/* ensure that the module is out of reset */
reset = readl(AM3517_IP_SW_RESET);
reset &= (~CPGMACSS_SW_RST);
writel(reset, AM3517_IP_SW_RESET);
/* Free requested GPIO */
gpio_free(PHY_GPIO);
}
return 0;
}
/*
* Routine: set_muxconf_regs
* Description: Setting up the configuration Mux registers specific to the
* hardware. Many pins need to be moved from protect to primary
* mode.
*/
void set_muxconf_regs(void)
{
MUX_AM3517EVM();
}
#if defined(CONFIG_MMC)
int board_mmc_init(bd_t *bis)
{
return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif
#if defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)
int board_eth_init(bd_t *bis)
{
int rv, n = 0;
rv = cpu_eth_init(bis);
if (rv > 0)
n += rv;
rv = usb_eth_initialize(bis);
if (rv > 0)
n += rv;
return n;
}
#endif
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