arm64: mvebu: Add Armada 3700 db-88f3720 development board support

This patch adds basic support for the Marvell Armada 3700 DB-88F3720
development board. Supported are the following interfaces:
- UART
- SPI (incl. SPI NOR)
- I2C
- Ethernet

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>

arch/arm/mach-mvebu/Kconfig

@@ -56,6 +56,10 @@ config TARGET_CLEARFOG
 	bool "Support ClearFog"
 	select 88F6820
 
+config TARGET_MVEBU_DB_88F3720
+	bool "Support DB-88F3720 Armada 3720"
+	select ARMADA_3700
+
 config TARGET_DB_88F6720
 	bool "Support DB-88F6720 Armada 375"
 	select ARMADA_375
@@ -88,6 +92,7 @@ endchoice
 
 config SYS_BOARD
 	default "clearfog" if TARGET_CLEARFOG
+	default "mvebu_db-88f3720" if TARGET_MVEBU_DB_88F3720
 	default "db-88f6720" if TARGET_DB_88F6720
 	default "db-88f6820-gp" if TARGET_DB_88F6820_GP
 	default "db-88f6820-amc" if TARGET_DB_88F6820_AMC
@@ -98,6 +103,7 @@ config SYS_BOARD
 
 config SYS_CONFIG_NAME
 	default "clearfog" if TARGET_CLEARFOG
+	default "mvebu_db-88f3720" if TARGET_MVEBU_DB_88F3720
 	default "db-88f6720" if TARGET_DB_88F6720
 	default "db-88f6820-gp" if TARGET_DB_88F6820_GP
 	default "db-88f6820-amc" if TARGET_DB_88F6820_AMC
@@ -108,6 +114,7 @@ config SYS_CONFIG_NAME
 
 config SYS_VENDOR
 	default "Marvell" if TARGET_DB_MV784MP_GP
+	default "Marvell" if TARGET_MVEBU_DB_88F3720
 	default "Marvell" if TARGET_DB_88F6720
 	default "Marvell" if TARGET_DB_88F6820_GP
 	default "Marvell" if TARGET_DB_88F6820_AMC

board/Marvell/mvebu_db-88f3720/MAINTAINERS

@@ -0,0 +1,6 @@
+MVEBU_DB_88F3720 BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/Marvell/mvebu_db-88f3720/
+F:	include/configs/mvebu_db-88f3720.h
+F:	configs/mvebu_db-88f3720_defconfig

board/Marvell/mvebu_db-88f3720/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2016 Stefan Roese <sr@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= board.o

board/Marvell/mvebu_db-88f3720/board.c

@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* IO expander I2C device */
+#define I2C_IO_EXP_ADDR		0x22
+#define I2C_IO_CFG_REG_0	0x6
+#define I2C_IO_DATA_OUT_REG_0	0x2
+#define I2C_IO_REG_0_SATA_OFF	2
+#define I2C_IO_REG_0_USB_H_OFF	1
+
+int board_early_init_f(void)
+{
+	/* Nothing to do (yet), perhaps later some pin-muxing etc */
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	return 0;
+}
+
+/* Board specific AHCI / SATA enable code */
+int board_ahci_enable(void)
+{
+	struct udevice *dev;
+	int ret;
+	u8 buf[8];
+
+	/* Configure IO exander PCA9555: 7bit address 0x22 */
+	ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
+	if (ret) {
+		printf("Cannot find PCA9555: %d\n", ret);
+		return 0;
+	}
+
+	ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to read IO expander value via I2C\n");
+		return -EIO;
+	}
+
+	/*
+	 * Enable SATA power via IO expander connected via I2C by setting
+	 * the corresponding bit to output mode to enable power for SATA
+	 */
+	buf[0] &= ~(1 << I2C_IO_REG_0_SATA_OFF);
+	ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to set IO expander via I2C\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/* Board specific xHCI enable code */
+int board_xhci_enable(void)
+{
+	struct udevice *dev;
+	int ret;
+	u8 buf[8];
+
+	/* Configure IO exander PCA9555: 7bit address 0x22 */
+	ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
+	if (ret) {
+		printf("Cannot find PCA9555: %d\n", ret);
+		return 0;
+	}
+
+	printf("Enable USB VBUS\n");
+
+	/*
+	 * Read configuration (direction) and set VBUS pin as output
+	 * (reset pin = output)
+	 */
+	ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to read IO expander value via I2C\n");
+		return -EIO;
+	}
+	buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF);
+	ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to set IO expander via I2C\n");
+		return -EIO;
+	}
+
+	/* Read VBUS output value and disable it */
+	ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to read IO expander value via I2C\n");
+		return -EIO;
+	}
+	buf[0] &= ~(1 << I2C_IO_REG_0_USB_H_OFF);
+	ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to set IO expander via I2C\n");
+		return -EIO;
+	}
+
+	/*
+	 * Required delay for configuration to settle - must wait for
+	 * power on port is disabled in case VBUS signal was high,
+	 * required 3 seconds delay to let VBUS signal fully settle down
+	 */
+	mdelay(3000);
+
+	/* Enable VBUS power: Set output value of VBUS pin as enabled */
+	buf[0] |= (1 << I2C_IO_REG_0_USB_H_OFF);
+	ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
+	if (ret) {
+		printf("Failed to set IO expander via I2C\n");
+		return -EIO;
+	}
+
+	mdelay(500); /* required delay to let output value settle */
+
+	return 0;
+}

configs/mvebu_db-88f3720_defconfig

@@ -0,0 +1,49 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MVEBU=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_TARGET_MVEBU_DB_88F3720=y
+CONFIG_DEFAULT_DEVICE_TREE="armada-3720-db"
+CONFIG_AHCI=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_FPGA is not set
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_TFTPPUT=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_BLOCK_CACHE=y
+CONFIG_DM_I2C=y
+CONFIG_DM_I2C_COMPAT=y
+CONFIG_MISC=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_PHYLIB=y
+CONFIG_MVEBU_COMPHY_SUPPORT=y
+# CONFIG_SPL_SERIAL_PRESENT is not set
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_MVEBU_A3700_UART=y
+CONFIG_DEBUG_UART_BASE=0xd0012000
+CONFIG_DEBUG_UART_CLOCK=25804800
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_MVEBU_A3700_UART=y
+CONFIG_MVEBU_A3700_SPI=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_STORAGE=y

include/configs/mvebu_db-88f3720.h

@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _CONFIG_MVEBU_DB_88F3720_H
+#define _CONFIG_MVEBU_DB_88F3720_H
+
+/*
+ * High Level Configuration Options (easy to change)
+ */
+#define CONFIG_DISPLAY_BOARDINFO_LATE
+#define CONFIG_ARCH_EARLY_INIT_R
+
+#define	CONFIG_SYS_TEXT_BASE	0x00000000
+
+/* additions for new ARM relocation support */
+#define CONFIG_SYS_SDRAM_BASE	0x00000000
+
+#define CONFIG_NR_DRAM_BANKS	1
+
+/* auto boot */
+#define CONFIG_PREBOOT
+
+#define CONFIG_BAUDRATE			115200
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, \
+					  115200, 230400, 460800, 921600 }
+
+/*
+ * For booting Linux, the board info and command line data
+ * have to be in the first 8 MB of memory, since this is
+ * the maximum mapped by the Linux kernel during initialization.
+ */
+#define CONFIG_CMDLINE_TAG		/* enable passing of ATAGs  */
+#define CONFIG_INITRD_TAG		/* enable INITRD tag */
+#define CONFIG_SETUP_MEMORY_TAGS	/* enable memory tag */
+
+#define	CONFIG_SYS_CBSIZE	1024	/* Console I/O Buff Size */
+#define	CONFIG_SYS_PBSIZE	(CONFIG_SYS_CBSIZE \
+		+sizeof(CONFIG_SYS_PROMPT) + 16)	/* Print Buff */
+
+/*
+ * Size of malloc() pool
+ */
+#define CONFIG_SYS_MALLOC_LEN	(4 << 20) /* 4MiB for malloc() */
+
+/*
+ * Other required minimal configurations
+ */
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_AUTO_COMPLETE
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_CONSOLE_INFO_QUIET	/* some code reduction */
+#define CONFIG_ARCH_CPU_INIT		/* call arch_cpu_init() */
+#define CONFIG_BOARD_EARLY_INIT_F	/* call board_init_f for early inits */
+#define CONFIG_SYS_LOAD_ADDR	0x00800000	/* default load adr- 8M */
+#define CONFIG_SYS_MEMTEST_START 0x00800000	/* 8M */
+#define CONFIG_SYS_MEMTEST_END	0x00ffffff	/*(_16M -1) */
+#define CONFIG_SYS_RESET_ADDRESS 0xffff0000	/* Rst Vector Adr */
+#define CONFIG_SYS_MAXARGS	32	/* max number of command args */
+
+#define CONFIG_SYS_CONSOLE_INFO_QUIET	/* don't print console @ startup */
+#define CONFIG_SYS_ALT_MEMTEST
+
+/* End of 16M scrubbed by training in bootrom */
+#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_TEXT_BASE + 0xFF0000)
+
+/*
+ * I2C
+ */
+#define CONFIG_I2C_MV
+#define CONFIG_SYS_I2C_SLAVE		0x0
+
+/*
+ * SPI Flash configuration
+ */
+#define CONFIG_ENV_SPI_BUS		0
+#define CONFIG_ENV_SPI_CS		0
+
+/* SPI NOR flash default params, used by sf commands */
+#define CONFIG_SF_DEFAULT_SPEED		1000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
+#define CONFIG_ENV_SPI_MODE		CONFIG_SF_DEFAULT_MODE
+
+/* Environment in SPI NOR flash */
+#define CONFIG_SYS_NO_FLASH		/* Declare no flash (NOR/SPI) */
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_ENV_OFFSET		0x180000 /* as Marvell U-Boot version */
+#define CONFIG_ENV_SIZE			(64 << 10) /* 64KiB */
+#define CONFIG_ENV_SECT_SIZE		(64 << 10) /* 64KiB sectors */
+
+/*
+ * Ethernet Driver configuration
+ */
+#define CONFIG_MVNETA		/* Enable Marvell Gbe Controller Driver */
+#define CONFIG_ENV_OVERWRITE	/* ethaddr can be reprogrammed */
+#define CONFIG_PHY_GIGE		/* GbE speed/duplex detect */
+#define CONFIG_ARP_TIMEOUT	200
+#define CONFIG_NET_RETRY_COUNT	50
+
+/* USB 2.0 */
+#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
+
+/* USB 3.0 */
+#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 3
+
+#define CONFIG_USB_MAX_CONTROLLER_COUNT (CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS + \
+					 CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS)
+
+/* USB ethernet */
+#define CONFIG_USB_HOST_ETHER
+#define CONFIG_USB_ETHER_ASIX
+#define CONFIG_USB_ETHER_MCS7830
+#define CONFIG_USB_ETHER_RTL8152
+#define CONFIG_USB_ETHER_SMSC95XX
+
+/*
+ * SATA/SCSI/AHCI configuration
+ */
+#define CONFIG_SCSI
+#define CONFIG_SCSI_AHCI
+#define CONFIG_SCSI_AHCI_PLAT
+#define CONFIG_LIBATA
+#define CONFIG_LBA48
+#define CONFIG_SYS_64BIT_LBA
+
+#define CONFIG_SYS_SCSI_MAX_SCSI_ID	2
+#define CONFIG_SYS_SCSI_MAX_LUN		1
+#define CONFIG_SYS_SCSI_MAX_DEVICE	(CONFIG_SYS_SCSI_MAX_SCSI_ID * \
+					 CONFIG_SYS_SCSI_MAX_LUN)
+
+#define CONFIG_SUPPORT_VFAT
+
+/* DISK Partition support */
+#define CONFIG_EFI_PARTITION
+#define CONFIG_DOS_PARTITION
+#define CONFIG_MAC_PARTITION
+#define CONFIG_ISO_PARTITION		/* Experimental */
+
+#define CONFIG_CMD_PART
+#define CONFIG_PARTITION_UUIDS
+
+#endif /* _CONFIG_MVEBU_DB_88F3720_H */