ARM: dts: imx8mm: Add i.MX8M Mini Toradex Verdin based Menlo board

Add new board based on the Toradex Verdin iMX8M Mini SoM, the MX8Menlo.
The board is a compatible replacement for i.MX53 M53Menlo and features
USB, multiple UARTs, ethernet, LEDs, SD and eMMC.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Max Krummenacher <max.krummenacher@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>

4 files changed, 127 insertions, 0 deletions

diff --git a/board/menlo/mx8menlo/Kconfig b/board/menlo/mx8menlo/Kconfig
new file mode 100644
index 0000000..51d0ee3
--- /dev/null
+++ b/board/menlo/mx8menlo/Kconfig
@@ -0,0 +1,39 @@
+if TARGET_IMX8MM_MX8MENLO
+
+config SYS_BOARD
+	default "mx8menlo"
+
+config SYS_VENDOR
+	default "menlo"
+
+config SYS_CONFIG_NAME
+	default "imx8mm-mx8menlo"
+
+config TDX_CFG_BLOCK
+	default y
+
+config TDX_CFG_BLOCK_EXTRA
+	default y
+
+config TDX_HAVE_MMC
+	default y
+
+config TDX_HAVE_EEPROM_EXTRA
+	default y
+
+config TDX_CFG_BLOCK_DEV
+	default "0"
+
+config TDX_CFG_BLOCK_PART
+	default "1"
+
+# Toradex config block in eMMC, at the end of 1st "boot sector"
+config TDX_CFG_BLOCK_OFFSET
+	default "-512"
+
+config IMX_CONFIG
+	default "board/toradex/verdin-imx8mm/imximage.cfg"
+
+source "board/toradex/common/Kconfig"
+
+endif
diff --git a/board/menlo/mx8menlo/MAINTAINERS b/board/menlo/mx8menlo/MAINTAINERS
new file mode 100644
index 0000000..09e6aef
--- /dev/null
+++ b/board/menlo/mx8menlo/MAINTAINERS
@@ -0,0 +1,7 @@
+MX8MENLO BOARD
+M:	Marek Vasut <marex@denx.de>
+M:	Olaf Mandel <o.mandel@menlosystems.com>
+S:	Maintained
+F:	board/menlo/mx8menlo/
+F:	include/configs/imx8mm-mx8menlo.h
+F:	configs/imx8mm-mx8menlo_defconfig
diff --git a/board/menlo/mx8menlo/Makefile b/board/menlo/mx8menlo/Makefile
new file mode 100644
index 0000000..fd5ec82
--- /dev/null
+++ b/board/menlo/mx8menlo/Makefile
@@ -0,0 +1,25 @@
+#
+# Menlosystems MX8Menlo
+# Copyright (C) 2021-2022 Marek Vasut <marex@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= mx8menlo.o
+
+obj-y += ../../toradex/verdin-imx8mm/verdin-imx8mm.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += ../../toradex/verdin-imx8mm/spl.o
+obj-$(CONFIG_IMX8M_LPDDR4) += ../../toradex/verdin-imx8mm/lpddr4_timing.o
+endif
+
+# Common for all Toradex modules
+ifeq ($(CONFIG_SPL_BUILD),y)
+# Necessary to create built-in.o
+obj- := __dummy__.o
+else
+obj-$(CONFIG_TDX_CFG_BLOCK) += ../../toradex/common/tdx-cfg-block.o
+obj-y += ../../toradex/common/tdx-common.o
+obj-y += ../../toradex/common/tdx-eeprom.o
+endif
diff --git a/board/menlo/mx8menlo/mx8menlo.c b/board/menlo/mx8menlo/mx8menlo.c
new file mode 100644
index 0000000..a4d0bec
--- /dev/null
+++ b/board/menlo/mx8menlo/mx8menlo.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021-2022 Marek Vasut <marex@denx.de>
+ */
+
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx8mm_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <spl.h>
+
+#define UART_PAD_CTRL	(PAD_CTL_PUE | PAD_CTL_PE | PAD_CTL_DSE4)
+#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
+
+/* Verdin UART_3, Console/Debug UART */
+static iomux_v3_cfg_t const uart_pads[] = {
+	IMX8MM_PAD_SAI3_TXFS_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MM_PAD_SAI3_TXC_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static iomux_v3_cfg_t const wdog_pads[] = {
+	IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
+};
+
+#define SNVS_BASE_ADDR		0x30370000
+#define SNVS_LPSR		0x4c
+#define SNVS_LPLVDR		0x64
+#define SNVS_LPPGDR_INIT	0x41736166
+
+static void setup_snvs(void)
+{
+	/* Enable SNVS clock */
+	clock_enable(CCGR_SNVS, 1);
+	/* Initialize glitch detect */
+	writel(SNVS_LPPGDR_INIT, SNVS_BASE_ADDR + SNVS_LPLVDR);
+	/* Clear interrupt status */
+	writel(0xffffffff, SNVS_BASE_ADDR + SNVS_LPSR);
+}
+
+void board_early_init(void)
+{
+	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+
+	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
+
+	set_wdog_reset(wdog);
+
+	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
+
+	init_uart_clk(1);
+
+	setup_snvs();
+}