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// SPDX-License-Identifier: GPL-2.0+
/*
* XEA iMX28 board
*
* Copyright (C) 2019 DENX Software Engineering
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*
* Copyright (C) 2018 DENX Software Engineering
* Måns Rullgård, DENX Software Engineering, mans@mansr.com
*
* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
* on behalf of DENX Software Engineering GmbH
*
*/
#include <common.h>
#include <fdt_support.h>
#include <init.h>
#include <log.h>
#include <net.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux-mx28.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <linux/delay.h>
#include <linux/mii.h>
#include <miiphy.h>
#include <netdev.h>
#include <errno.h>
#include <usb.h>
#include <serial.h>
#ifdef CONFIG_SPL_BUILD
#include <spl.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
/*
* Functions
*/
static void init_clocks(void)
{
/* IO0 clock at 480MHz */
mxs_set_ioclk(MXC_IOCLK0, 480000);
/* IO1 clock at 480MHz */
mxs_set_ioclk(MXC_IOCLK1, 480000);
/* SSP0 clock at 96MHz */
mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
/* SSP2 clock at 160MHz */
mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
/* SSP3 clock at 96MHz */
mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
}
#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_FRAMEWORK)
void board_init_f(ulong arg)
{
init_clocks();
spl_early_init();
preloader_console_init();
}
static int boot_tiva0, boot_tiva1;
/* Check if TIVAs request booting via U-Boot proper */
void spl_board_init(void)
{
struct gpio_desc btiva0, btiva1, en_3_3v;
int ret;
/*
* Setup GPIO0_0 (TIVA power enable pin) to be output high
* to allow TIVA startup.
*/
ret = dm_gpio_lookup_name("GPIO0_0", &en_3_3v);
if (ret)
printf("Cannot get GPIO0_0\n");
ret = dm_gpio_request(&en_3_3v, "pwr_3_3v");
if (ret)
printf("Cannot request GPIO0_0\n");
/* Set GPIO0_0 to HIGH */
dm_gpio_set_dir_flags(&en_3_3v, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
if (ret)
printf("Cannot get GPIO0_23\n");
ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
if (ret)
printf("Cannot get GPIO0_25\n");
ret = dm_gpio_request(&btiva0, "boot-tiva0");
if (ret)
printf("Cannot request GPIO0_23\n");
ret = dm_gpio_request(&btiva1, "boot-tiva1");
if (ret)
printf("Cannot request GPIO0_25\n");
dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
udelay(1000);
boot_tiva0 = dm_gpio_get_value(&btiva0);
boot_tiva1 = dm_gpio_get_value(&btiva1);
}
void board_boot_order(u32 *spl_boot_list)
{
spl_boot_list[0] = BOOT_DEVICE_MMC1;
spl_boot_list[1] = BOOT_DEVICE_SPI;
spl_boot_list[2] = BOOT_DEVICE_UART;
}
int spl_start_uboot(void)
{
/* break into full u-boot on 'c' */
if (serial_tstc() && serial_getc() == 'c')
return 1;
debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
return !boot_tiva0 || !boot_tiva1;
}
#else
int board_early_init_f(void)
{
init_clocks();
return 0;
}
int board_init(void)
{
struct gpio_desc phy_rst;
int ret;
/* Address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
cpu_eth_init(NULL);
/* PHY INT#/PWDN# */
ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
if (ret) {
printf("Cannot get GPIO4_13\n");
return ret;
}
ret = dm_gpio_request(&phy_rst, "phy-rst");
if (ret) {
printf("Cannot request GPIO4_13\n");
return ret;
}
dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
udelay(1000);
return 0;
}
int dram_init(void)
{
return mxs_dram_init();
}
#ifdef CONFIG_OF_BOARD_SETUP
static int fdt_fixup_l2switch(void *blob)
{
u8 ethaddr[6];
int ret;
if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
ret = fdt_find_and_setprop(blob,
"/ahb@80080000/switch@800f0000",
"local-mac-address", ethaddr, 6, 1);
if (ret < 0)
printf("%s: can't find usbether@1 node: %d\n",
__func__, ret);
}
return 0;
}
int ft_board_setup(void *blob, struct bd_info *bd)
{
/*
* i.MX28 L2 switch needs manual update (fixup) of eth MAC address
* (in 'local-mac-address' property) as it uses "switch@800f0000"
* node, not set by default FIT image handling code in
* "ethernet@800f0000"
*/
fdt_fixup_l2switch(blob);
return 0;
}
#endif
/*
* NOTE:
*
* IMX28 clock "stub" DM driver!
*
* Only used for SPL stage, which is NOT using DM; serial and
* eMMC configuration.
*/
static const struct udevice_id imx28_clk_ids[] = {
{ .compatible = "fsl,imx28-clkctrl", },
{ }
};
U_BOOT_DRIVER(fsl_imx28_clkctrl) = {
.name = "fsl_imx28_clkctrl",
.id = UCLASS_CLK,
.of_match = imx28_clk_ids,
};
#endif /* CONFIG_SPL_BUILD */
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