board: imx8mm: Add Engicam i.Core MX8M Mini C.TOUCH 2.0

Engicam C.TOUCH 2.0 is an EDIMM compliant general purpose Carrier
board.

Genaral features:
- Ethernet 10/100
- Wifi/BT
- USB Type A/OTG
- Audio Out
- CAN
- LVDS panel connector

i.Core MX8M Mini is an EDIMM SoM based on NXP i.MX8M Mini from Engicam.

i.Core MX8M Mini needs to mount on top of this Carrier board for
creating complete i.Core MX8M Mini C.TOUCH 2.0 board.

Linux dts commit details:

commit <a142252061ff> ("arm64: dts: imx8mm: Add Engicam i.Core MX8M Mini
C.TOUCH 2.0")

Add support for it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

6 files changed, 232 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 120ac61..90942b2 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -835,6 +835,7 @@ dtb-$(CONFIG_ARCH_IMX8) += \
 
 dtb-$(CONFIG_ARCH_IMX8M) += \
 	imx8mm-evk.dtb \
+	imx8mm-icore-mx8mm-ctouch2.dtb \
 	imx8mm-icore-mx8mm-edimm2.2.dtb \
 	imx8mm-venice.dtb \
 	imx8mm-venice-gw71xx-0x.dtb \
diff --git a/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2-u-boot.dtsi b/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2-u-boot.dtsi
new file mode 100644
index 0000000..8b67bcf
--- /dev/null
+++ b/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2-u-boot.dtsi
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2020 Engicam srl
+ * Copyright (c) 2020 Amarula Solutions(India)
+ */
+
+#include "imx8mm-icore-mx8mm-u-boot.dtsi"
+
+&gpio1 {
+	u-boot,dm-spl;
+};
+
+&pinctrl_uart2 {
+	u-boot,dm-spl;
+};
+
+&pinctrl_usdhc1_gpio {
+	u-boot,dm-spl;
+};
+
+&pinctrl_usdhc1 {
+	u-boot,dm-spl;
+};
+
+&uart2 {
+	u-boot,dm-spl;
+};
+
+&usdhc1 {
+	u-boot,dm-spl;
+};
diff --git a/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2.dts b/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2.dts
new file mode 100644
index 0000000..5389d6f
--- /dev/null
+++ b/arch/arm/dts/imx8mm-icore-mx8mm-ctouch2.dts
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 NXP
+ * Copyright (c) 2019 Engicam srl
+ * Copyright (c) 2020 Amarula Solutions(India)
+ */
+
+/dts-v1/;
+#include "imx8mm.dtsi"
+#include "imx8mm-icore-mx8mm.dtsi"
+
+/ {
+	model = "Engicam i.Core MX8M Mini C.TOUCH 2.0";
+	compatible = "engicam,icore-mx8mm-ctouch2", "engicam,icore-mx8mm",
+		     "fsl,imx8mm";
+
+	chosen {
+		stdout-path = &uart2;
+	};
+};
+
+&fec1 {
+	status = "okay";
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+};
+
+&i2c4 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c4>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_I2C2_SCL		0x400001c3
+			MX8MM_IOMUXC_I2C2_SDA_I2C2_SDA		0x400001c3
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL		0x400001c3
+			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA		0x400001c3
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX	0x140
+			MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX	0x140
+		>;
+	};
+
+	pinctrl_usdhc1_gpio: usdhc1gpiogrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6	0x41
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK		0x190
+			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD		0x1d0
+			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0	0x1d0
+			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1	0x1d0
+			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2	0x1d0
+			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3	0x1d0
+		>;
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};
+
+/* SD */
+&usdhc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_usdhc1_gpio>;
+	cd-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+	max-frequency = <50000000>;
+	bus-width = <4>;
+	no-1-8-v;
+	pm-ignore-notify;
+	keep-power-in-suspend;
+	status = "okay";
+};
diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index bf14f2d..171f36e 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -58,6 +58,11 @@ config TARGET_IMX8MM_ICORE_MX8MM
 	  * i.Core MX8M Mini needs to mount on top of EDIMM2.2 for
 	    creating complete i.Core MX8M Mini EDIMM2.2 Starter Kit.
 
+	  i.Core MX8M Mini C.TOUCH 2.0
+	  * C.TOUCH 2.0 is a general purpose Carrier board.
+	  * i.Core MX8M Mini needs to mount on top of this Carrier board
+	    for creating complete i.Core MX8M Mini C.TOUCH 2.0 board.
+
 config TARGET_IMX8MM_VENICE
 	bool "Support Gateworks Venice iMX8M Mini module"
 	select IMX8MM
diff --git a/board/engicam/imx8mm/MAINTAINERS b/board/engicam/imx8mm/MAINTAINERS
index 044a939..2e99a59 100644
--- a/board/engicam/imx8mm/MAINTAINERS
+++ b/board/engicam/imx8mm/MAINTAINERS
@@ -1,3 +1,9 @@
+i.Core-MX8M-Mini-CTOUCH2.0
+M:	Jagan Teki <jagan@amarulasolutions.com>
+M:	Matteo Lisi <matteo.lisi@engicam.com>
+S:	Maintained
+F:	configs/imx8mm-icore-mx8mm-ctouch2_defconfig
+
 i.Core-MX8M-Mini-EDIMM2.2
 M:	Jagan Teki <jagan@amarulasolutions.com>
 M:	Matteo Lisi <matteo.lisi@engicam.com>
diff --git a/configs/imx8mm-icore-mx8mm-ctouch2_defconfig b/configs/imx8mm-icore-mx8mm-ctouch2_defconfig
new file mode 100644
index 0000000..f771ebd
--- /dev/null
+++ b/configs/imx8mm-icore-mx8mm-ctouch2_defconfig
@@ -0,0 +1,92 @@
+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=0x10000
+CONFIG_ENV_SIZE=0x1000
+CONFIG_ENV_OFFSET=0x400000
+CONFIG_DM_GPIO=y
+CONFIG_SPL_TEXT_BASE=0x7E1000
+CONFIG_TARGET_IMX8MM_ICORE_MX8MM=y
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
+CONFIG_SPL=y
+CONFIG_DEFAULT_DEVICE_TREE="imx8mm-icore-mx8mm-ctouch2"
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_FIT_EXTERNAL_OFFSET=0x3000
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage-8mm-lpddr4.cfg"
+CONFIG_DEFAULT_FDT_FILE="imx8mm-icore-mx8mm-ctouch2.dtb"
+CONFIG_SPL_BOARD_INIT=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_POWER_SUPPORT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="u-boot=> "
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_CRC32 is not set
+CONFIG_CMD_CLK=y
+CONFIG_CMD_FUSE=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_REGULATOR=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+# CONFIG_ISO_PARTITION is not set
+# CONFIG_EFI_PARTITION is not set
+CONFIG_OF_CONTROL=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_SYS_MMC_ENV_DEV=2
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_SPL_DM=y
+CONFIG_SPL_CLK_COMPOSITE_CCF=y
+CONFIG_CLK_COMPOSITE_CCF=y
+CONFIG_SPL_CLK_IMX8MM=y
+CONFIG_CLK_IMX8MM=y
+CONFIG_MXC_GPIO=y
+CONFIG_DM_PCA953X=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_MXC=y
+CONFIG_DM_MMC=y
+CONFIG_SUPPORT_EMMC_BOOT=y
+CONFIG_FSL_USDHC=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_ATHEROS=y
+CONFIG_DM_ETH=y
+CONFIG_PHY_GIGE=y
+CONFIG_FEC_MXC=y
+CONFIG_MII=y
+CONFIG_PINCTRL=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_PINCTRL_IMX8M=y
+CONFIG_DM_REGULATOR=y
+CONFIG_SPL_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_CONS_INDEX=2
+CONFIG_DM_SERIAL=y
+# CONFIG_SPL_DM_SERIAL is not set
+CONFIG_MXC_UART=y
+CONFIG_SYSRESET=y
+CONFIG_SPL_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_DM_THERMAL=y
+CONFIG_IMX_TMU=y