nitrogen8mm: add rev 2

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

arch/arm/dts/imx8mm-nitrogen8mm_rev2.dts

+/*
+ * Copyright 2018 NXP
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "imx8mm-nitrogen8mm.dts"
+
+/ {
+	model = "Boundary Devices i.MX8MMini Nitrogen8MM Rev2";
+	compatible = "boundary,imx8mm-nitrogen8mm_rev2", "fsl,imx8mm";
+};
+
+&wdog1 {
+	/delete-property/ reset-gpios;
+};

board/boundary/nitrogen8mm/Kconfig

 if TARGET_NITROGEN8MM || TARGET_NITROGEN8MN
 
+config BOARD_REV2
+	bool "board rev2"
+
+config BOARD_TYPE
+	string
+	depends on BOARD_REV2
+	default "nitrogen8mm_rev2" if BOARD_REV2
+
 config SYS_BOARD
 	default "nitrogen8mm"
 

board/boundary/nitrogen8mm/nitrogen8mm.c

@@ -231,8 +231,56 @@ int board_init(void)
 	return 0;
 }
 
+#ifndef CONFIG_BOARD_REV2
+
+#define PF8100 0x08
+#define PF8X00_EMREV	0x02
+#define PF8X00_PROGID	0x03
+#define ID_DUAL1	0x4008
+#define ID_DUAL2	0x301d
+
+void check_wdog(void)
+{
+	struct udevice *bus;
+	struct udevice *i2c_dev;
+	unsigned char id[4];
+	int ret;
+	int prog_id;
+
+	ret = uclass_get_device_by_seq(UCLASS_I2C, 0, &bus);
+	if (ret) {
+		printf("%s: Can't find bus\n", __func__);
+		return;
+	}
+
+	ret = dm_i2c_probe(bus, PF8100, 0, &i2c_dev);
+	if (ret) {
+		printf("%s: Can't find device id=0x%x\n", __func__, PF8100);
+		return;
+	}
+
+	id[0] = 0;
+	id[0] = 1;
+	dm_i2c_read(i2c_dev, PF8X00_PROGID, id, 1);
+	dm_i2c_read(i2c_dev, PF8X00_EMREV, &id[1], 1);
+	prog_id = (id[1] << 8) | id[0];
+	if ((prog_id != ID_DUAL1) && (prog_id != ID_DUAL2)) {
+		/*
+		 * a couple of boards were stuffed with a pmic
+		 * with a falling edge wdog.
+		 */
+		env_set("cmd_board",
+			"fdt rm wdog0 reset-gpios");
+		printf("cmd_board set to correct wdog edge\n");
+	}
+}
+#endif
+
 static void set_env_vars(void)
 {
+#ifndef CONFIG_BOARD_REV2
+	check_wdog();
+#endif
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	if (!env_get("board"))
 		env_set("board", "nitrogen8mm");

configs/nitrogen8mm_rev2_2g_defconfig

+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_NITROGEN8MM=y
+CONFIG_BOARD_REV2=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="imx8mm-nitrogen8mm_rev2"
+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=\"nitrogen8mm_rev2_2g\""
+CONFIG_BOOTSTAGE_STASH_SIZE=4096
+CONFIG_ARCH_MISC_INIT=y
+CONFIG_SPL_TEXT_BASE=0x7E1000
+CONFIG_SPL_BOARD_INIT=y
+CONFIG_SPL_I2C_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_IMLS=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_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_SYS_FSL_SEC_LE=y
+CONFIG_IMX8M_LPDDR4=y
+CONFIG_USB_FUNCTION_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x42800000
+CONFIG_FASTBOOT_BUF_SIZE=0x40000000
+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_IO_VOLTAGE=y
+CONFIG_MMC_UHS_SUPPORT=y
+CONFIG_MMC_HS200_SUPPORT=y
+CONFIG_FSL_ESDHC_IMX=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_ATHEROS=y
+CONFIG_NETDEVICES=y
+CONFIG_FEC_MXC=y
+CONFIG_FEC_PHY_BITBANG=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_EHCI_HCD=y
+CONFIG_MXC_USB_OTG_HACTIVE=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=0x1000
+CONFIG_CI_UDC=y
+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