mx7ulp: Add support for Embedded Artists COM board

The Embedded Artists COM board is based on NXP i.MX7ULP.

It has a BD70528 PMIC from Rohm with discrete DCDC powering option and
improved current observability (compared to the existing NXP i.MX7ULP EVK).

Add the initial support for the board.

Signed-off-by: Fabio Estevam <festevam@gmail.com>

5 files changed, 209 insertions, 0 deletions

diff --git a/board/ea/mx7ulp_com/Kconfig b/board/ea/mx7ulp_com/Kconfig
new file mode 100644
index 0000000000..90883aced4
--- /dev/null
+++ b/board/ea/mx7ulp_com/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_MX7ULP_COM
+
+config SYS_BOARD
+	default "mx7ulp_com"
+
+config SYS_VENDOR
+	default "ea"
+
+config SYS_CONFIG_NAME
+	default "mx7ulp_com"
+
+endif
diff --git a/board/ea/mx7ulp_com/MAINTAINERS b/board/ea/mx7ulp_com/MAINTAINERS
new file mode 100644
index 0000000000..3f69511b1a
--- /dev/null
+++ b/board/ea/mx7ulp_com/MAINTAINERS
@@ -0,0 +1,6 @@
+MX7ULPCOM BOARD
+M:	Fabio Estevam <festevam@gmail.com>
+S:	Maintained
+F:	board/ea/mx7ulp_com/
+F:	include/configs/mx7ulp_com.h
+F:	configs/mx7ulp_com_defconfig
diff --git a/board/ea/mx7ulp_com/Makefile b/board/ea/mx7ulp_com/Makefile
new file mode 100644
index 0000000000..b3b230b172
--- /dev/null
+++ b/board/ea/mx7ulp_com/Makefile
@@ -0,0 +1,6 @@
+# (C) Copyright 2016 Freescale Semiconductor, Inc.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y  := mx7ulp_com.o
diff --git a/board/ea/mx7ulp_com/imximage.cfg b/board/ea/mx7ulp_com/imximage.cfg
new file mode 100644
index 0000000000..d298d17c1e
--- /dev/null
+++ b/board/ea/mx7ulp_com/imximage.cfg
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Refer docs/README.imxmage for more details about how-to configure
+ * and create imximage boot image
+ *
+ * The syntax is taken as close as possible with the kwbimage
+ */
+
+#define __ASSEMBLY__
+#include <config.h>
+
+/* image version */
+
+IMAGE_VERSION 2
+
+/*
+ * Boot Device : one of
+ * spi/sd/nand/onenand, qspi/nor
+ */
+
+BOOT_FROM	sd
+
+#ifdef CONFIG_USE_IMXIMG_PLUGIN
+/*PLUGIN    plugin-binary-file    IRAM_FREE_START_ADDR*/
+PLUGIN	board/freescale/mx7ulp_evk/plugin.bin 0x2F020000
+#else
+
+#ifdef CONFIG_SECURE_BOOT
+CSF CONFIG_CSF_SIZE
+#endif
+/*
+ * Device Configuration Data (DCD)
+ *
+ * Each entry must have the format:
+ * Addr-type           Address        Value
+ *
+ * where:
+ *	Addr-type register length (1,2 or 4 bytes)
+ *	Address	  absolute address of the register
+ *	value	  value to be stored in the register
+ */
+DATA 4   0x403f00dc 0x00000000
+DATA 4   0x403e0040 0x01000020
+DATA 4   0x403e0500 0x01000000
+DATA 4   0x403e050c 0x80808080
+DATA 4   0x403e0508 0x00160002
+DATA 4   0x403E0510 0x00000001
+DATA 4   0x403E0514 0x00000014
+DATA 4   0x403e0500 0x00000001
+CHECK_BITS_SET 4 0x403e0500 0x01000000
+/*
+ * Default PFD0 divide is 27, which generates:
+ * PFD0 Freq = A7 APLL (528MHz) * 18 / 27 = 352MHz
+ *
+ * i.MX7ULP COM board can not run DDR at 352MHz, so
+ * use a divider of 30 (0x1E), which gives:
+ *
+ * PFD0 Freq = A7 APLL (528MHz) * 18 / 30 = 316.8MHz
+ */
+DATA 4   0x403e050c 0x8080801E
+CHECK_BITS_SET 4 0x403e050c 0x00000040
+DATA 4   0x403E0030 0x00000001
+DATA 4   0x403e0040 0x11000020
+DATA 4   0x403f00dc 0x42000000
+
+DATA 4   0x40B300AC 0x40000000
+
+DATA 4   0x40AD0128 0x00040000
+DATA 4   0x40AD00F8 0x00000000
+DATA 4   0x40AD00D8 0x00000180
+DATA 4   0x40AD0104 0x00000180
+DATA 4   0x40AD0108 0x00000180
+DATA 4   0x40AD0124 0x00010000
+DATA 4   0x40AD0080 0x0000018C
+DATA 4   0x40AD0084 0x0000018C
+DATA 4   0x40AD0088 0x0000018C
+DATA 4   0x40AD008C 0x0000018C
+
+DATA 4   0x40AD0120 0x00010000
+DATA 4   0x40AD010C 0x00000180
+DATA 4   0x40AD0110 0x00000180
+DATA 4   0x40AD0114 0x00000180
+DATA 4   0x40AD0118 0x00000180
+DATA 4   0x40AD0090 0x00000180
+DATA 4   0x40AD0094 0x00000180
+DATA 4   0x40AD0098 0x00000180
+DATA 4   0x40AD009C 0x00000180
+
+DATA 4   0x40AD00E0 0x00040000
+DATA 4   0x40AD00E4 0x00040000
+
+DATA 4   0x40AB001C 0x00008000
+DATA 4   0x40AB085C 0x0D3900A0
+DATA 4   0x40AB0800 0xA1390003
+DATA 4   0x40AB0890 0x00400000
+DATA 4   0x40AB081C 0x33333333
+DATA 4   0x40AB0820 0x33333333
+DATA 4   0x40AB0824 0x33333333
+DATA 4   0x40AB0828 0x33333333
+DATA 4   0x40AB08C0 0x24922492
+DATA 4   0x40AB0848 0x3A3E3838
+DATA 4   0x40AB0850 0x28282C2A
+DATA 4   0x40AB083C 0x20000000
+DATA 4   0x40AB0840 0x00000000
+DATA 4   0x40AB08B8 0x00000800
+DATA 4   0x40AB000C 0x292C40F5
+DATA 4   0x40AB0004 0x00020064
+DATA 4   0x40AB0010 0xB6AD0A83
+DATA 4   0x40AB0014 0x00C70093
+DATA 4   0x40AB0018 0x00211708
+DATA 4   0x40AB002C 0x0F9F26D2
+DATA 4   0x40AB0030 0x009F0E10
+DATA 4   0x40AB0038 0x00130556
+DATA 4   0x40AB0008 0x12272000
+DATA 4   0x40AB0040 0x0000003F
+DATA 4   0x40AB0000 0xC3110000
+DATA 4   0x40AB001C 0x00008010
+DATA 4   0x40AB001C 0x00008018
+DATA 4   0x40AB001C 0x003F8030
+DATA 4   0x40AB001C 0xFF0A8030
+DATA 4   0x40AB001C 0x82018030
+DATA 4   0x40AB001C 0x06028030
+DATA 4   0x40AB001C 0x01038030
+DATA 4   0x40AB001C 0x003F8038
+DATA 4   0x40AB001C 0xFF0A8038
+DATA 4   0x40AB001C 0x82018038
+DATA 4   0x40AB001C 0x06028038
+DATA 4   0x40AB001C 0x01038038
+DATA 4   0x40AB083C 0xA0000000
+DATA 4   0x40AB083C 0xA0000000
+DATA 4   0x40AB0020 0x00001800
+DATA 4   0x40AB0800 0xA1310003
+DATA 4   0x40AB001C 0x00000000
+#endif
diff --git a/board/ea/mx7ulp_com/mx7ulp_com.c b/board/ea/mx7ulp_com/mx7ulp_com.c
new file mode 100644
index 0000000000..6fc1631bf7
--- /dev/null
+++ b/board/ea/mx7ulp_com/mx7ulp_com.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/mx7ulp-pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL		(PAD_CTL_PUS_UP)
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+
+	return 0;
+}
+
+static iomux_cfg_t const lpuart4_pads[] = {
+	MX7ULP_PAD_PTC3__LPUART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX7ULP_PAD_PTC2__LPUART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	mx7ulp_iomux_setup_multiple_pads(lpuart4_pads,
+					 ARRAY_SIZE(lpuart4_pads));
+}
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}