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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018-2019 Toradex AG
*/
#include <common.h>
#include <init.h>
#include <linux/delay.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch-mx6/clock.h>
#include <asm/arch-mx6/imx-regs.h>
#include <asm/arch-mx6/mx6ull_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/io.h>
#include <dm.h>
#include <dm/platform_data/serial_mxc.h>
#include <env.h>
#include <fdt_support.h>
#include <imx_thermal.h>
#include <jffs2/load_kernel.h>
#include <linux/sizes.h>
#include <miiphy.h>
#include <mtd_node.h>
#include <netdev.h>
#include "../common/tdx-common.h"
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
#define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
PAD_CTL_DSE_48ohm)
#define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040
#define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
#define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP)
#define FLASH_DETECTION_CTRL (PAD_CTL_HYS | PAD_CTL_PUE)
#define FLASH_DET_GPIO IMX_GPIO_NR(4, 1)
static iomux_v3_cfg_t const flash_detection_pads[] = {
MX6_PAD_NAND_WE_B__GPIO4_IO01 | MUX_PAD_CTRL(FLASH_DETECTION_CTRL),
};
static bool is_emmc;
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
return 0;
}
#ifdef CONFIG_NAND_MXS
static void setup_gpmi_nand(void)
{
setup_gpmi_io_clk((MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
MXC_CCM_CS2CDR_ENFC_CLK_SEL(3)));
}
#endif /* CONFIG_NAND_MXS */
#ifdef CONFIG_DM_VIDEO
static iomux_v3_cfg_t const backlight_pads[] = {
/* Backlight On */
MX6_PAD_JTAG_TMS__GPIO1_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* Backlight PWM<A> (multiplexed pin) */
MX6_PAD_NAND_WP_B__GPIO4_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
#define GPIO_BL_ON IMX_GPIO_NR(1, 11)
#define GPIO_PWM_A IMX_GPIO_NR(4, 11)
static int setup_lcd(void)
{
imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads));
/* Set BL_ON */
gpio_request(GPIO_BL_ON, "BL_ON");
gpio_direction_output(GPIO_BL_ON, 1);
/* Set PWM<A> to full brightness (assuming inversed polarity) */
gpio_request(GPIO_PWM_A, "PWM<A>");
gpio_direction_output(GPIO_PWM_A, 0);
return 0;
}
#endif
#ifdef CONFIG_FEC_MXC
static int setup_fec(void)
{
struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
int ret;
/*
* Use 50MHz anatop loopback REF_CLK2 for ENET2,
* clear gpr1[14], set gpr1[18].
*/
clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
ret = enable_fec_anatop_clock(1, ENET_50MHZ);
if (ret)
return ret;
enable_enet_clk(1);
return 0;
}
#endif
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
/*
* Enable GPIO on NAND_WE_B/eMMC_RST with 100k pull-down. eMMC_RST
* is pulled high with 4.7k for eMMC devices. This allows to reliably
* detect eMMC/NAND flash
*/
imx_iomux_v3_setup_multiple_pads(flash_detection_pads, ARRAY_SIZE(flash_detection_pads));
gpio_request(FLASH_DET_GPIO, "flash-detection-gpio");
is_emmc = gpio_get_value(FLASH_DET_GPIO);
gpio_free(FLASH_DET_GPIO);
#ifdef CONFIG_FEC_MXC
setup_fec();
#endif
#ifdef CONFIG_NAND_MXS
setup_gpmi_nand();
#endif
return 0;
}
#ifdef CONFIG_CMD_BMODE
/* TODO */
static const struct boot_mode board_boot_modes[] = {
/* 4 bit bus width */
{"nand", MAKE_CFGVAL(0x40, 0x34, 0x00, 0x00)},
{"sd1", MAKE_CFGVAL(0x10, 0x10, 0x00, 0x00)},
{NULL, 0},
};
#endif
int board_late_init(void)
{
#ifdef CONFIG_TDX_CFG_BLOCK
/*
* If we have a valid config block and it says we are a module with
* Wi-Fi/Bluetooth make sure we use the -wifi device tree.
*/
if (tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT_IT ||
tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT) {
env_set("variant", "-wifi");
} else {
if (is_emmc) {
env_set("variant", "-emmc");
} else {
env_set("variant", "");
}
}
#else
if (is_emmc) {
env_set("variant", "-emmc");
} else {
env_set("variant", "");
}
#endif
/*
* Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the
* SOC to request for a lower voltage during sleep. This is necessary
* because the voltage is changing too slow for the SOC to wake up
* properly.
*/
__raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR);
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif
#ifdef CONFIG_CMD_USB_SDP
if (is_boot_from_usb()) {
printf("Serial Downloader recovery mode, using sdp command\n");
env_set("bootdelay", "0");
env_set("bootcmd", "sdp 0");
}
#endif /* CONFIG_CMD_USB_SDP */
#if defined(CONFIG_DM_VIDEO)
setup_lcd();
#endif
return 0;
}
int checkboard(void)
{
printf("Model: Toradex Colibri iMX6ULL\n");
return 0;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, bd_t *bd)
{
#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
static struct node_info nodes[] = {
{ "fsl,imx6ull-gpmi-nand", MTD_DEV_TYPE_NAND, },
{ "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
};
/* Update partition nodes using info from mtdparts env var */
puts(" Updating MTD partitions...\n");
fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
#endif
return ft_common_board_setup(blob, bd);
}
#endif
static struct mxc_serial_platdata mxc_serial_plat = {
.reg = (struct mxc_uart *)UART1_BASE,
.use_dte = 1,
};
U_BOOT_DEVICE(mxc_serial) = {
.name = "serial_mxc",
.platdata = &mxc_serial_plat,
};
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