son: initial addition, Boundary Devices board

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
10 months ago · 5e63b20ab8
--- a/arch/arm/dts/imx8mq-son.dts
+++ b/arch/arm/dts/imx8mq-son.dts
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -55,6 +55,11 @@ config TARGET_NITROGEN8MM_SOM
 	select IMX8MM
 	select SUPPORT_SPL

 config TARGET_SON
 	bool "son"
 	select IMX8MQ
 	select SUPPORT_SPL

 config TARGET_IMX8MM_EVK
 	bool "imx8mm_evk"
 	select IMX8MM
@@ -85,5 +90,6 @@ source "board/boundary/nitrogen8m/Kconfig"
 source "board/boundary/nitrogen8m_som/Kconfig"
 source "board/boundary/nitrogen8mm/Kconfig"
 source "board/boundary/nitrogen8mm_som/Kconfig"
 source "board/boundary/son/Kconfig"
 source "board/freescale/imx8mm_evk/Kconfig"
 endif
--- a/board/boundary/son/Kconfig
+++ b/board/boundary/son/Kconfig
@@ -0,0 +1,18 @@
 if TARGET_SON

 config SYS_BOARD
 	default "son"

 config SYS_VENDOR
 	default "boundary"

 config SYS_CONFIG_NAME
 	default "son"

 config DDR_RANK_BITS
 	int "ddr rank bits"
 	default 1

 source "board/boundary/common/Kconfig"

 endif
--- a/board/boundary/son/Makefile
+++ b/board/boundary/son/Makefile
@@ -0,0 +1,12 @@
 #
 # Copyright 2016 Freescale Semiconductor
 #
 # SPDX-License-Identifier:      GPL-2.0+
 #

 obj-y += son.o

 ifdef CONFIG_SPL_BUILD
 obj-y += spl.o
 obj-y += lpddr4_timing.o
 endif
--- a/board/boundary/son/lpddr4_timing.c
+++ b/board/boundary/son/lpddr4_timing.c
--- a/board/boundary/son/son.c
+++ b/board/boundary/son/son.c
@@ -0,0 +1,336 @@
 /*
 * Copyright 2016 Freescale Semiconductor, Inc.
 * Copyright 2017-2018 NXP
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

 #include <common.h>
 #include <malloc.h>
 #include <errno.h>
 #include <asm/io.h>
 #include <miiphy.h>
 #include <netdev.h>
 #include <asm/mach-imx/boot_mode.h>
 #include <asm/mach-imx/fbpanel.h>
 #include <asm/mach-imx/iomux-v3.h>
 #include <asm-generic/gpio.h>
 #include <fsl_esdhc_imx.h>
 #include <mmc.h>
 #include <asm/arch/imx8mq_pins.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/mach-imx/gpio.h>
 #include <asm/mach-imx/mxc_i2c.h>
 #include <asm/arch/clock.h>
 #include <asm/mach-imx/video.h>
 #include <video_fb.h>
 #include <spl.h>
 #include <power/pmic.h>
 #include <power/pfuze100_pmic.h>
 #include <dm.h>
 #include <usb.h>
 #include <dwc3-uboot.h>
 #include <linux/usb/dwc3.h>
 #include "../common/padctrl.h"
 #include "../common/bd_common.h"

 DECLARE_GLOBAL_DATA_PTR;

 static iomux_v3_cfg_t const init_pads[] = {
 	IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
 	IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
 	IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),

 #define GP_BACKLIGHT_EN	IMX_GPIO_NR(3, 24)
 	IMX8MQ_PAD_SAI5_RXD3__GPIO3_IO24 | MUX_PAD_CTRL(0x03),

 #define GP_FASTBOOT_KEY			IMX_GPIO_NR(1, 7)
 	IMX8MQ_PAD_GPIO1_IO07__GPIO1_IO7 | MUX_PAD_CTRL(WEAK_PULLUP),

 #define GP_I2C2_PCA9546_RESET		IMX_GPIO_NR(3, 18)
 	IMX8MQ_PAD_NAND_WP_B__GPIO3_IO18 | MUX_PAD_CTRL(0x49),

 #define GP_I2C2A_SN65DSI83_EN		IMX_GPIO_NR(3, 15)
 	IMX8MQ_PAD_NAND_RE_B__GPIO3_IO15 | MUX_PAD_CTRL(0x6),

 #define GP_EMMC_RESET			IMX_GPIO_NR(2, 10)
 	IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(0x41),

 #ifdef CONFIG_FEC_MXC
 	/* PHY - AR8035 */
 	IOMUX_PAD_CTRL(ENET_MDIO__ENET_MDIO, PAD_CTRL_ENET_MDIO),
 	IOMUX_PAD_CTRL(ENET_MDC__ENET_MDC, PAD_CTRL_ENET_MDC),
 	IOMUX_PAD_CTRL(ENET_TX_CTL__ENET_RGMII_TX_CTL, PAD_CTRL_ENET_TX),
 	IOMUX_PAD_CTRL(ENET_TD0__ENET_RGMII_TD0, PAD_CTRL_ENET_TX),
 	IOMUX_PAD_CTRL(ENET_TD1__ENET_RGMII_TD1, PAD_CTRL_ENET_TX),
 	IOMUX_PAD_CTRL(ENET_TD2__ENET_RGMII_TD2, PAD_CTRL_ENET_TX),
 	IOMUX_PAD_CTRL(ENET_TD3__ENET_RGMII_TD3, PAD_CTRL_ENET_TX),
 	IOMUX_PAD_CTRL(ENET_TXC__ENET_RGMII_TXC, PAD_CTRL_ENET_TX),
 #endif
 #define GP_RGMII_PHY_RESET	IMX_GPIO_NR(1, 9)
 	IOMUX_PAD_CTRL(GPIO1_IO09__GPIO1_IO9, WEAK_PULLUP),
 #define GPIRQ_ENET_PHY		IMX_GPIO_NR(1, 11)
 	IOMUX_PAD_CTRL(GPIO1_IO11__GPIO1_IO11, WEAK_PULLUP),
 };

 int board_early_init_f(void)
 {
 	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;

 	imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));
 	set_wdog_reset(wdog);

 	gpio_direction_output(GP_EMMC_RESET, 1);
 	gpio_direction_output(GP_I2C2_PCA9546_RESET, 0);
 	gpio_direction_output(GP_I2C2A_SN65DSI83_EN, 0);

 	return 0;
 }

 #ifdef CONFIG_BOARD_POSTCLK_INIT
 int board_postclk_init(void)
 {
 	/* TODO */
 	return 0;
 }
 #endif

 #define MAX_LOW_SIZE	(0x100000000ULL - CONFIG_SYS_SDRAM_BASE)
 #define SDRAM_SIZE	((1ULL * CONFIG_DDR_MB) << 20)

 #if SDRAM_SIZE > MAX_LOW_SIZE
 #define MEM_SIZE	MAX_LOW_SIZE
 #else
 #define MEM_SIZE	SDRAM_SIZE
 #endif

 int dram_init_banksize(void)
 {
 	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	gd->bd->bi_dram[0].size = SDRAM_SIZE;
 	return 0;
 }

 int dram_init(void)
 {
 	/* rom_pointer[1] contains the size of TEE occupies */
 	gd->ram_size = MEM_SIZE - rom_pointer[1];
 	return 0;
 }

 #ifdef CONFIG_OF_BOARD_SETUP
 int ft_board_setup(void *blob, bd_t *bd)
 {
 	return 0;
 }
 #endif


 #if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_IMX8M)

 #define USB_PHY_CTRL0			0xF0040
 #define USB_PHY_CTRL0_REF_SSP_EN	BIT(2)

 #define USB_PHY_CTRL1			0xF0044
 #define USB_PHY_CTRL1_RESET		BIT(0)
 #define USB_PHY_CTRL1_COMMONONN		BIT(1)
 #define USB_PHY_CTRL1_ATERESET		BIT(3)
 #define USB_PHY_CTRL1_VDATSRCENB0	BIT(19)
 #define USB_PHY_CTRL1_VDATDETENB0	BIT(20)

 #define USB_PHY_CTRL2			0xF0048
 #define USB_PHY_CTRL2_TXENABLEN0	BIT(8)

 static struct dwc3_device dwc3_device_data = {
 	.maximum_speed = USB_SPEED_SUPER,
 	.base = USB1_BASE_ADDR,
 	.dr_mode = USB_DR_MODE_PERIPHERAL,
 	.index = 0,
 //	.power_down_scale = 2,
 };

 int usb_gadget_handle_interrupts(void)
 {
 	dwc3_uboot_handle_interrupt(0);
 	return 0;
 }

 static void dwc3_nxp_usb_phy_init(struct dwc3_device *dwc3)
 {
 	struct dwc3 *dwc3_reg = (struct dwc3 *)(dwc3->base + DWC3_REG_OFFSET);
 	u32 val;

 	val = readl(dwc3->base + USB_PHY_CTRL1);
 	val &= ~(USB_PHY_CTRL1_VDATSRCENB0 | USB_PHY_CTRL1_VDATDETENB0 |
 			USB_PHY_CTRL1_COMMONONN);
 	val |= USB_PHY_CTRL1_RESET | USB_PHY_CTRL1_ATERESET;
 	writel(val, dwc3->base + USB_PHY_CTRL1);

 	val = readl(dwc3->base + USB_PHY_CTRL0);
 	val |= USB_PHY_CTRL0_REF_SSP_EN;
 	writel(val, dwc3->base + USB_PHY_CTRL0);

 	val = readl(dwc3->base + USB_PHY_CTRL2);
 	val |= USB_PHY_CTRL2_TXENABLEN0;
 	writel(val, dwc3->base + USB_PHY_CTRL2);

 	val = readl(dwc3->base + USB_PHY_CTRL1);
 	val &= ~(USB_PHY_CTRL1_RESET | USB_PHY_CTRL1_ATERESET);
 	writel(val, dwc3->base + USB_PHY_CTRL1);

 	val = readl(&dwc3_reg->g_ctl);
 	val &= ~(DWC3_GCTL_PWRDNSCALE_MASK);
 	val |= DWC3_GCTL_PWRDNSCALE(2);

 	writel(val, &dwc3_reg->g_ctl);
 }
 #endif

 #if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_IMX8M)
 int board_usb_init(int index, enum usb_init_type init)
 {
 	int ret = 0;
 	imx8m_usb_power(index, true);

 	if (index == 0 && init == USB_INIT_DEVICE) {
 		dwc3_nxp_usb_phy_init(&dwc3_device_data);
 		return dwc3_uboot_init(&dwc3_device_data);
 	} else if (index == 0 && init == USB_INIT_HOST) {
 		return ret;
 	}

 	if (index == 1) {
 		/* Release HUB reset */
 #define GP_USB1_HUB_RESET	IMX_GPIO_NR(1, 14)
 		imx_iomux_v3_setup_pad(IMX8MQ_PAD_GPIO1_IO14__GPIO1_IO14 |
 				       MUX_PAD_CTRL(WEAK_PULLUP));
 		gpio_request(GP_USB1_HUB_RESET, "usb1_rst");
 		gpio_direction_output(GP_USB1_HUB_RESET, 1);
 	}

 	return 0;
 }

 int board_usb_cleanup(int index, enum usb_init_type init)
 {
 	int ret = 0;
 	if (index == 0 && init == USB_INIT_DEVICE)
 		dwc3_uboot_exit(index);

 	imx8m_usb_power(index, false);

 	return ret;
 }
 #endif

 #ifdef CONFIG_CMD_FBPANEL

 int board_detect_hdmi(struct display_info_t const *di)
 {
 	return hdmi_hpd_status() ? 1 : 0;
 }

 static const struct display_info_t displays[] = {
 	/* hdmi */
 	VD_1920_1080M_60(HDMI, board_detect_hdmi, 0, 0x50),
 	VD_1280_720M_60(HDMI, NULL, 0, 0x50),
 	VD_1024_768M_60(HDMI, NULL, 0, 0x50),

 	VD_MIPI_M101NWWB(MIPI, NULL, fbp_bus_gp(3, GP_I2C2A_SN65DSI83_EN, 0, 0), 0x2c),
 };

 #define display_cnt	ARRAY_SIZE(displays)
 #else
 #define displays	NULL
 #define display_cnt	0
 #endif

 int board_init(void)
 {
 	gpio_request(GP_I2C2A_SN65DSI83_EN, "sn65dsi83_enable");
 #ifdef CONFIG_DM_ETH
 	board_eth_init(gd->bd);
 #endif
 #ifdef CONFIG_CMD_FBPANEL
 	fbp_setup_display(displays, display_cnt);
 #endif

 	return 0;
 }

 int board_mmc_get_env_dev(int devno)
 {
 	return 0;
 }

 #if defined(CONFIG_CMD_FASTBOOT) || defined(CONFIG_CMD_DFU)
 extern void imx_get_mac_from_fuse(int dev_id, unsigned char *mac);
 static void addserial_env(const char* env_var)
 {
 	unsigned char mac_address[8];
 	char serialbuf[20];

 	if (!env_get(env_var)) {
 		imx_get_mac_from_fuse(0, mac_address);
 		snprintf(serialbuf, sizeof(serialbuf), "%02x%02x%02x%02x%02x%02x",
 			 mac_address[0], mac_address[1], mac_address[2],
 			 mac_address[3], mac_address[4], mac_address[5]);
 		env_set(env_var, serialbuf);
 	}
 }
 #endif

 #ifdef CONFIG_CMD_BMODE
 const struct boot_mode board_boot_modes[] = {
        /* 4 bit bus width */
 	{"emmc0",	MAKE_CFGVAL(0x22, 0x20, 0x00, 0x10)},
        {NULL,          0},
 };
 #endif

 static int fastboot_key_pressed(void)
 {
 	gpio_request(GP_FASTBOOT_KEY, "fastboot_key");
 	gpio_direction_input(GP_FASTBOOT_KEY);
 	return !gpio_get_value(GP_FASTBOOT_KEY);
 }

 void init_usb_clk(int usbno);

 static void set_env_vars(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	if (!env_get("board"))
 		env_set("board", "son");
 	env_set("soc", "imx8mq");
 	env_set("imx_cpu", get_imx_type((get_cpu_rev() & 0xFF000) >> 12));
 	env_set("uboot_defconfig", CONFIG_DEFCONFIG);
 #endif
 }

 void board_set_default_env(void)
 {
 	set_env_vars();
 #ifdef CONFIG_CMD_FBPANEL
 	fbp_setup_env_cmds();
 #endif
 	board_eth_addresses();
 }

 int board_late_init(void)
 {
 	set_env_vars();
 #if defined(CONFIG_USB_FUNCTION_FASTBOOT) || defined(CONFIG_CMD_DFU)
 	addserial_env("serial#");
 	if (fastboot_key_pressed()) {
 		printf("Starting fastboot...\n");
 		env_set("preboot", "fastboot 0");
 	}
 #endif
 #ifdef CONFIG_CMD_BMODE
 	add_board_boot_modes(board_boot_modes);
 #endif
 	init_usb_clk(0);
 	init_usb_clk(1);
 	return 0;
 }
--- a/board/boundary/son/spl.c
+++ b/board/boundary/son/spl.c
@@ -0,0 +1,242 @@
 /*
 * Copyright 2017 NXP
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

 #include <common.h>
 #include <spl.h>
 #include <asm/io.h>
 #include <errno.h>
 #include <asm/io.h>
 #include <asm/mach-imx/iomux-v3.h>
 #include <asm/arch/imx8mq_pins.h>
 #include <asm/arch/sys_proto.h>
 #include <power/pmic.h>
 #include <power/pfuze100_pmic.h>
 #include <asm/arch/clock.h>
 #include <asm/mach-imx/gpio.h>
 #include <asm/mach-imx/mxc_i2c.h>
 #include <fsl_esdhc_imx.h>
 #include <mmc.h>
 #include <asm/arch/ddr.h>
 #ifdef CONFIG_IMX8M_LPDDR4
 #include <asm/arch/imx8m_ddr.h>
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 void spl_dram_init(void)
 {
 	/* ddr init */
 	ddr_init(&dram_timing);
 }

 #define I2C_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 struct i2c_pads_info i2c_pad_info1 = {
 	.scl = {
 		.i2c_mode = IMX8MQ_PAD_I2C1_SCL__I2C1_SCL | PC,
 		.gpio_mode = IMX8MQ_PAD_I2C1_SCL__GPIO5_IO14 | PC,
 		.gp = IMX_GPIO_NR(5, 14),
 	},
 	.sda = {
 		.i2c_mode = IMX8MQ_PAD_I2C1_SDA__I2C1_SDA | PC,
 		.gpio_mode = IMX8MQ_PAD_I2C1_SDA__GPIO5_IO15 | PC,
 		.gp = IMX_GPIO_NR(5, 15),
 	},
 };

 #define USDHC_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | \
 			 PAD_CTL_FSEL2)
 #define USDHC_GPIO_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_DSE1)

 static iomux_v3_cfg_t const init_pads[] = {
 #define GP_I2C1_PCA9546_RESET		IMX_GPIO_NR(1, 8)
 	IMX8MQ_PAD_GPIO1_IO08__GPIO1_IO8 | MUX_PAD_CTRL(0x49),

 	IMX8MQ_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA4__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA5__USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA6__USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD1_DATA7__USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 #define GP_EMMC_RESET	IMX_GPIO_NR(2, 10)
 	IMX8MQ_PAD_SD1_RESET_B__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),

 	IMX8MQ_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD2_DATA0__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD2_DATA1__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD2_DATA2__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 	IMX8MQ_PAD_SD2_DATA3__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 #define GP_USDHC2_CD	IMX_GPIO_NR(2, 12)
 	IMX8MQ_PAD_SD2_CD_B__GPIO2_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
 #define GP_USDHC2_VSEL		IMX_GPIO_NR(3, 20)
 	IMX8MQ_PAD_SAI5_RXC__GPIO3_IO20 | MUX_PAD_CTRL(0x16),
 };

 static struct fsl_esdhc_cfg usdhc_cfg[] = {
 	{.esdhc_base = USDHC1_BASE_ADDR, .bus_width = 8,
 			.gp_reset = GP_EMMC_RESET},
 	{.esdhc_base = USDHC2_BASE_ADDR, .bus_width = 4,},
 };

 int board_mmc_init(bd_t *bis)
 {
 	int i, ret;
 	/*
 	 * According to the board_mmc_init() the following map is done:
 	 * (U-Boot device node)    (Physical Port)
 	 * mmc0                    USDHC1
 	 * mmc1                    USDHC2
 	 */
 	for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 		switch (i) {
 		case 0:
 			usdhc_cfg[0].sdhc_clk = mxc_get_clock(USDHC1_CLK_ROOT);
 			gpio_request(GP_EMMC_RESET, "usdhc1_reset");
 			gpio_direction_output(GP_EMMC_RESET, 0);
 			udelay(500);
 			gpio_direction_output(GP_EMMC_RESET, 1);
 			break;
 		case 1:
 			usdhc_cfg[1].sdhc_clk = mxc_get_clock(USDHC2_CLK_ROOT);
 			gpio_request(GP_USDHC2_CD, "usdhc2 cd");
 			gpio_direction_input(GP_USDHC2_CD);
 			break;
 		default:
 			printf("Warning: you configured more USDHC controllers"
 				"(%d) than supported by the board\n", i + 1);
 			return -EINVAL;
 		}

 		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 		if (ret)
 			return ret;
 	}

 	return 0;
 }

 int board_mmc_getcd(struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 	int ret = 0;

 	switch (cfg->esdhc_base) {
 	case USDHC1_BASE_ADDR:
 		return 1;
 	case USDHC2_BASE_ADDR:
 		ret = gpio_get_value(GP_USDHC2_CD);
 		return ret ? 0 : 1;
 	}

 	return 0;
 }

 int power_init_boundary(void)
 {
 	int ret;
 	unsigned char buf[4];

 	i2c_set_bus_num(0);
 #define PF8100	0x08
 #define SW2_VOLT	0x59
 #define SW3_CONFIG2	0x5e
 #define SW3_VOLT	0x61
 #define SW4_CONFIG2	0x66
 #define SW4_VOLT	0x69
 #define SW5_VOLT	0x71

 	buf[0] = 0x50;	/* (.90-.4)*160=.50*160=80=0x50  80/160+.4=.90 gpu/dram/arm */
 	ret = i2c_write(PF8100, SW2_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
 	ret = i2c_write(PF8100, SW4_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
 	ret = i2c_write(PF8100, SW3_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
 	/*
 	 * Make sw3 a 180 phase shift from sw4,
 	 * in case pmic not programmed for dual mode
 	 */
 	ret = i2c_read(PF8100, SW4_CONFIG2, 1, buf, 1);
 	if (!ret) {
 		buf[0] ^= 4;	/* 180 degree phase */
 		ret = i2c_write(PF8100, SW3_CONFIG2, 1, buf, 1);
 	}

 	buf[0] = 0x40;	/* (.80-.4)*160=.40*160=64=0x40  64/160+.4=.80 vpu */
 	ret = i2c_write(PF8100, SW5_VOLT, 1, buf, 1);

 	gpio_request(GP_USDHC2_VSEL, "usdhc2_vsel");
 	gpio_direction_output(GP_USDHC2_VSEL, 0);
 	return ret;
 }

 void spl_board_init(void)
 {
 #ifndef CONFIG_SPL_USB_SDP_SUPPORT
 	/* Serial download mode */
 	if (is_usb_boot()) {
 		puts("Back to ROM, SDP\n");
 		restore_boot_params();
 	}
 #endif
 	puts("Normal Boot\n");
 }

 #ifdef CONFIG_SPL_LOAD_FIT
 int board_fit_config_name_match(const char *name)
 {
 	/* Just empty function now - can't decide what to choose */
 	debug("%s: %s\n", __func__, name);

 	return 0;
 }
 #endif

 void board_init_f(ulong dummy)
 {
 	int ret;

 	/* Clear global data */
 	memset((void *)gd, 0, sizeof(gd_t));

 	arch_cpu_init();

 	board_early_init_f();
 	init_uart_clk(0);
 	timer_init();

 	preloader_console_init();

 	/* Clear the BSS. */
 	memset(__bss_start, 0, __bss_end - __bss_start);

 	ret = spl_init();
 	if (ret) {
 		printf("spl_init() failed: %d\n", ret);
 		hang();
 	}

 	enable_tzc380();
 	imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));

 	/* Adjust pmic voltage to 1.0V for 800M */
 	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);

 	power_init_boundary();

 	/* DDR initialization */
 	spl_dram_init();

 	board_init_r(NULL, 0);
 }
--- a/configs/son_2g_defconfig
+++ b/configs/son_2g_defconfig
@@ -0,0 +1,106 @@
 CONFIG_ARM=y
 CONFIG_ARCH_IMX8M=y
 CONFIG_SYS_TEXT_BASE=0x40200000
 CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_TARGET_SON=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
 CONFIG_SPL=y
 CONFIG_DEBUG_UART_BASE=0x30860000
 CONFIG_DEBUG_UART_CLOCK=25000000
 CONFIG_DEFAULT_DEVICE_TREE="imx8mq-son"
 CONFIG_DEBUG_UART=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage.cfg,DDR_MB=2048,DEFCONFIG=\"son_2g\""
 CONFIG_SPL_TEXT_BASE=0x7E1000
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_POWER_SUPPORT=y
 CONFIG_SPL_USB_HOST_SUPPORT=y
 CONFIG_SPL_USB_GADGET_SUPPORT=y
 CONFIG_SPL_USB_SDP_SUPPORT=y
 CONFIG_SPL_WATCHDOG_SUPPORT=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_SYS_ALT_MEMTEST=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_USB_MASS_STORAGE=y
 CONFIG_CMD_BMP=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT4_WRITE=y
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_ISO_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_PARTITION_TYPE_GUID=y
 CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_IMX8M_LPDDR4=y
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_BUF_ADDR=0x40480000
 CONFIG_FASTBOOT_BUF_SIZE=0x20000000
 CONFIG_FASTBOOT_FLASH=y
 CONFIG_FASTBOOT_FLASH_MMC_DEV=0
 CONFIG_DM_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_MXC=y
 CONFIG_SYS_I2C_MXC_I2C1=y
 CONFIG_SYS_I2C_MXC_I2C2=y
 CONFIG_SYS_I2C_MXC_I2C3=y
 CONFIG_SYS_I2C_MXC_I2C4=y
 CONFIG_DM_MMC=y
 CONFIG_MMC_HS200_SUPPORT=y
 CONFIG_FSL_ESDHC_IMX=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_ATHEROS=y
 CONFIG_NETDEVICES=y
 CONFIG_FEC_MXC=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX8M=y
 CONFIG_DM_REGULATOR=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_DEBUG_UART_MXC=y
 CONFIG_MXC_UART=y
 CONFIG_DM_THERMAL=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_DWC3=y
 CONFIG_USB_DWC3_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_KEYBOARD=y
 CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_MANUFACTURER="Boundary"
 CONFIG_USB_GADGET_VENDOR_NUM=0x3016
 CONFIG_USB_GADGET_PRODUCT_NUM=0x0001
 CONFIG_USB_GADGET_SPL_SPD_PRODUCT_NUM=0x1001
 CONFIG_USB_ETHER=y
 CONFIG_USB_ETH_CDC=y
 CONFIG_USBNET_DEVADDR="00:19:b8:00:00:02"
 CONFIG_USBNET_HOST_ADDR="00:19:b8:00:00:01"
 CONFIG_USB_HOST_ETHER=y
 CONFIG_USB_ETHER_ASIX=y
 CONFIG_USB_ETHER_MCS7830=y
 CONFIG_USB_ETHER_SMSC95XX=y
 CONFIG_VIDEO=y
 CONFIG_VIDEO_IMXDCSS=y
 CONFIG_VIDEO_IMX8_HDMI=y
--- a/include/configs/son.h
+++ b/include/configs/son.h
@@ -0,0 +1,257 @@
 /*
 * Copyright 2018 Boundary Devices
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

 #ifndef __SON_H
 #define __SON_H

 #include <linux/sizes.h>
 #include <asm/arch/imx-regs.h>

 #ifdef CONFIG_SECURE_BOOT
 #define CONFIG_CSF_SIZE			0x2000 /* 8K region */
 #endif

 #define CONFIG_SPL_MAX_SIZE		(124 * 1024)
 #define CONFIG_SYS_MONITOR_LEN		(512 * 1024)
 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	0x300
 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1

 #ifdef CONFIG_SPL_BUILD

 /*#define CONFIG_ENABLE_DDR_TRAINING_DEBUG*/
 #define CONFIG_SPL_LDSCRIPT		"arch/arm/cpu/armv8/u-boot-spl.lds"
 #define CONFIG_SPL_STACK		0x00187FF0
 #define CONFIG_SPL_BSS_START_ADDR	0x00180000
 #define CONFIG_SPL_BSS_MAX_SIZE		0x00002000	/* 8 KB */
 #define CONFIG_SYS_SPL_MALLOC_START	0x42200000
 #define CONFIG_SYS_SPL_MALLOC_SIZE	0x00080000	/* 512 KB */
 #define CONFIG_MALLOC_F_ADDR		0x00182000	/* malloc f used before GD_FLG_FULL_MALLOC_INIT set */
 #define CONFIG_SYS_ICACHE_OFF
 #define CONFIG_SYS_DCACHE_OFF

 #define CONFIG_SPL_ABORT_ON_RAW_IMAGE /* For RAW image gives a error info not panic */

 #undef CONFIG_BLK
 #undef CONFIG_DM_MMC
 #undef CONFIG_DM_PMIC
 #undef CONFIG_DM_PMIC_PFUZE100

 #define CONFIG_SYS_I2C

 #endif

 #define CONFIG_PREBOOT

 #define CONFIG_REMAKE_ELF

 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_BOARD_POSTCLK_INIT
 #define CONFIG_BOARD_LATE_INIT

 /* Flat Device Tree Definitions */
 #define CONFIG_OF_BOARD_SETUP

 #undef CONFIG_CMD_EXPORTENV
 #undef CONFIG_CMD_IMPORTENV
 #undef CONFIG_CMD_IMLS

 /* #define CONFIG_CMD_BMODE */
 #undef CONFIG_CMD_CRC32
 #undef CONFIG_BOOTM_NETBSD

 /* ENET Config */
 /* ENET1 */
 #if defined(CONFIG_CMD_NET)
 #define CONFIG_MII
 #define CONFIG_ETHPRIME			"FEC"

 #define CONFIG_FEC_XCV_TYPE		RGMII
 #define CONFIG_FEC_MXC_PHYADDR		4
 #define FEC_QUIRK_ENET_MAC
 #define GP_RGMII_PHY_RESET		IMX_GPIO_NR(1, 9)

 #define CONFIG_PHY_GIGE
 #define IMX_FEC_BASE			0x30BE0000

 #endif

 /* Link Definitions */
 #define CONFIG_LOADADDR			0x40480000
 #define CONFIG_SYS_TEXT_BASE		0x40200000

 #define CONFIG_SYS_LOAD_ADDR           CONFIG_LOADADDR

 #define CONFIG_SYS_INIT_RAM_ADDR        0x40000000
 #define CONFIG_SYS_INIT_RAM_SIZE        0x80000
 #define CONFIG_SYS_INIT_SP_OFFSET \
        (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_ADDR \
        (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)

 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_ENV_SIZE			0x2000
 #define CONFIG_ENV_OFFSET               (-CONFIG_ENV_SIZE)
 #define CONFIG_SYS_MMC_ENV_DEV		0	/* USDHC1 */
 #define CONFIG_SYS_MMC_ENV_PART         1	/* mmcblk0boot0 */

 /* Size of malloc() pool */
 #define CONFIG_SYS_MALLOC_LEN		((CONFIG_ENV_SIZE + (2*1024) + (16*1024)) * 1024)

 #define CONFIG_SYS_SDRAM_BASE           0x40000000
 #define PHYS_SDRAM                      0x40000000

 #define CONFIG_SYS_MEMTEST_START    PHYS_SDRAM
 #define CONFIG_SYS_MEMTEST_END      (CONFIG_SYS_MEMTEST_START + 0x40000000u)

 #define CONFIG_BAUDRATE			115200

 #define CONFIG_MXC_UART_BASE		UART1_BASE_ADDR

 /* Monitor Command Prompt */
 #define CONFIG_SYS_CBSIZE              2048
 #define CONFIG_SYS_MAXARGS             64
 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
 					sizeof(CONFIG_SYS_PROMPT) + 16)

 #define CONFIG_IMX_BOOTAUX

 #define CONFIG_FSL_USDHC

 #define CONFIG_SYS_FSL_USDHC_NUM	1
 #define CONFIG_SYS_FSL_ESDHC_ADDR       0

 #define CONFIG_SUPPORT_EMMC_BOOT	/* eMMC specific */
 #define CONFIG_SUPPORT_EMMC_RPMB
 #define CONFIG_SYS_MMC_IMG_LOAD_PART	1

 #define CONFIG_MXC_GPIO

 #define CONFIG_MXC_OCOTP
 #define CONFIG_CMD_FUSE

 /* I2C Configs */
 #define CONFIG_SYS_I2C_SPEED		  100000

 /* USB configs */
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_USBD_HS

 #define CONFIG_USB_GADGET_MASS_STORAGE

 #endif

 #define CONFIG_USB_GADGET_VBUS_DRAW 2

 #define CONFIG_USB_MAX_CONTROLLER_COUNT         2

 #define CONFIG_OF_SYSTEM_SETUP

 /* Framebuffer */
 #ifdef CONFIG_VIDEO
 #define CONFIG_VIDEO_BMP_RLE8
 #define CONFIG_SPLASH_SCREEN
 #define CONFIG_SPLASH_SCREEN_ALIGN
 #define CONFIG_BMP_16BPP
 #define CONFIG_VIDEO_LOGO
 #define CONFIG_VIDEO_BMP_LOGO
 #endif

 #ifndef BD_CONSOLE
 #if CONFIG_MXC_UART_BASE == UART2_BASE_ADDR
 #define BD_CONSOLE	"ttymxc1"
 #elif CONFIG_MXC_UART_BASE == UART1_BASE_ADDR
 #define BD_CONSOLE	"ttymxc0"
 #endif
 #endif

 #ifdef CONFIG_CMD_MMC
 #if (CONFIG_SYS_FSL_USDHC_NUM == 1)
 #define DISTRO_BOOT_DEV_MMC(func) func(MMC, mmc, 0)
 #elif (CONFIG_SYS_FSL_USDHC_NUM == 2)
 #define DISTRO_BOOT_DEV_MMC(func) func(MMC, mmc, 0) func(MMC, mmc, 1)
 #else
 #define DISTRO_BOOT_DEV_MMC(func) func(MMC, mmc, 0) func(MMC, mmc, 1) func(MMC, mmc, 2)
 #endif
 #else
 #define DISTRO_BOOT_DEV_MMC(func)
 #endif

 #ifdef CONFIG_USB_STORAGE
 #define DISTRO_BOOT_DEV_USB(func) func(USB, usb, 0)
 #else
 #define DISTRO_BOOT_DEV_USB(func)
 #endif

 #ifndef BOOT_TARGET_DEVICES
 #define BOOT_TARGET_DEVICES(func) \
 	DISTRO_BOOT_DEV_USB(func) \
 	DISTRO_BOOT_DEV_MMC(func)
 #endif

 #include <config_distro_bootcmd.h>
 #define CONFIG_CMD_FBPANEL

 #define BD_RAM_BASE	0x80000000
 #define BD_RAM_SCRIPT	"40020000"
 #define BD_RAM_KERNEL	"40800000"
 #define BD_RAM_RAMDISK	"42800000"
 #define BD_RAM_FDT	"43000000"

 /* M4 specific */
 #define SYS_AUXCORE_BOOTDATA_DDR	0x80000000
 #define SYS_AUXCORE_BOOTDATA_TCM	0x007E0000

 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"console=" BD_CONSOLE "\0" \
 	"env_dev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
 	"env_part=" __stringify(CONFIG_SYS_MMC_ENV_PART) "\0" \
 	"scriptaddr=" __stringify(CONFIG_LOADADDR) "\0" \
 	"fdt_addr=0x43000000\0" \
 	"fdt_high=0xffffffffffffffff\0" \
 	"initrd_high=0xffffffffffffffff\0" \
 	"m4boot=load ${devtype} ${devnum}:1 ${m4loadaddr} ${m4image}; " \
 		"dcache flush; bootaux ${m4loadaddr}\0" \
 	"m4image=m4_fw.bin\0" \
 	"m4loadaddr="__stringify(SYS_AUXCORE_BOOTDATA_TCM)"\0" \
 	"netargs=setenv bootargs console=${console},115200 root=/dev/nfs rw " \
 		"ip=dhcp nfsroot=${tftpserverip}:${nfsroot},v3,tcp\0" \
 	"netboot=run netargs; " \
 		"if test -z \"${fdt_file}\" -a -n \"${soc}\"; then " \
 			"setenv fdt_file ${soc}-${board}${boardver}.dtb; " \
 		"fi; " \
 		"if test ${ip_dyn} = yes; then " \
 			"setenv get_cmd dhcp; " \
 		"else " \
 			"setenv get_cmd tftp; " \
 		"fi; " \
 		"${get_cmd} ${loadaddr} ${tftpserverip}:Image; " \
 		"if ${get_cmd} ${fdt_addr} ${tftpserverip}:${fdt_file}; then " \
 			"booti ${loadaddr} - ${fdt_addr}; " \
 		"else " \
 			"echo WARN: Cannot load the DT; " \
 		"fi;\0" \
 	"net_upgradeu=dhcp " BD_RAM_SCRIPT " net_upgradeu.scr && source " BD_RAM_SCRIPT "\0" \
 	"otg_upgradeu=run usbnetwork; tftp " BD_RAM_SCRIPT " net_upgradeu.scr && source " BD_RAM_SCRIPT "\0" \
 	"upgradeu=setenv boot_scripts upgrade.scr; boot;" \
 		"echo Upgrade failed!; setenv boot_scripts boot.scr\0" \
 	"usbnet_devaddr=00:19:b8:00:00:02\0" \
 	"usbnet_hostaddr=00:19:b8:00:00:01\0" \
 	"usbnetwork=setenv ethact usb_ether; " \
 		"setenv ipaddr 10.0.0.2; " \
 		"setenv netmask 255.255.255.0; " \
 		"setenv serverip 10.0.0.1;\0" \
 	BOOTENV

 /*
 * PCI express
 */
 #ifdef CONFIG_CMD_PCI
 #define CONFIG_PCI_SCAN_SHOW
 #define CONFIG_PCIE_IMX
 #endif
 #endif