board: stm32: Add Engicam i.Core STM32MP1 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 STM32MP1 is an EDIMM SoM based on STM32MP157A from Engicam.

i.Core STM32MP1 needs to mount on top of this Carrier board for
creating complete i.Core STM32MP1 C.TOUCH 2.0 board.

Linux dts commit details:

commit <6ca2898df59f> ("ARM: dts: stm32: Add Engicam i.Core STM32MP1
C.TOUCH 2.0")

Add support for it.

Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

4 files changed, 104 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 39ee7dcbac..8b18369558 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -989,6 +989,7 @@ dtb-$(CONFIG_ARCH_STI) += stih410-b2260.dtb
 dtb-$(CONFIG_STM32MP15x) += \
 	stm32mp157a-dk1.dtb \
 	stm32mp157a-avenger96.dtb \
+	stm32mp157a-icore-stm32mp1-ctouch2.dtb \
 	stm32mp157a-icore-stm32mp1-edimm2.2.dtb \
 	stm32mp157c-dk2.dtb \
 	stm32mp157c-ed1.dtb \
diff --git a/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2-u-boot.dtsi b/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2-u-boot.dtsi
new file mode 100644
index 0000000000..96fe461235
--- /dev/null
+++ b/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2-u-boot.dtsi
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2019 - All Rights Reserved
+ * Copyright (c) 2020 Amarula Solutions(India)
+ * Author: Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include "stm32mp157a-icore-stm32mp1-u-boot.dtsi"
+
+/{
+	aliases {
+		mmc0 = &sdmmc1;
+	};
+
+	chosen {
+		stdout-path = &uart4;
+	};
+};
+
+&sdmmc1 {
+	u-boot,dm-pre-reloc;
+};
+
+&sdmmc1_b4_pins_a {
+	u-boot,dm-pre-reloc;
+
+	pins1 {
+		u-boot,dm-pre-reloc;
+	};
+
+	pins2 {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&uart4 {
+	u-boot,dm-pre-reloc;
+};
+
+&uart4_pins_a {
+	u-boot,dm-pre-reloc;
+
+	pins1 {
+		u-boot,dm-pre-reloc;
+	};
+
+	pins2 {
+		u-boot,dm-pre-reloc;
+		bias-pull-up;
+	};
+};
diff --git a/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2.dts b/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2.dts
new file mode 100644
index 0000000000..d3058a036c
--- /dev/null
+++ b/arch/arm/dts/stm32mp157a-icore-stm32mp1-ctouch2.dts
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) STMicroelectronics 2019 - All Rights Reserved
+ * Copyright (c) 2020 Engicam srl
+ * Copyright (c) 2020 Amarula Solutons(India)
+ */
+
+/dts-v1/;
+#include "stm32mp157.dtsi"
+#include "stm32mp157a-icore-stm32mp1.dtsi"
+#include "stm32mp15-pinctrl.dtsi"
+#include "stm32mp15xxaa-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Engicam i.Core STM32MP1 C.TOUCH 2.0";
+	compatible = "engicam,icore-stm32mp1-ctouch2",
+		     "engicam,icore-stm32mp1", "st,stm32mp157";
+
+	aliases {
+		serial0 = &uart4;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&sdmmc1 {
+	bus-width = <4>;
+	disable-wp;
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc1_b4_pins_a>;
+	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+	st,neg-edge;
+	vmmc-supply = <&v3v3>;
+	status = "okay";
+};
+
+&uart4 {
+	pinctrl-names = "default", "sleep", "idle";
+	pinctrl-0 = <&uart4_pins_a>;
+	pinctrl-1 = <&uart4_sleep_pins_a>;
+	pinctrl-2 = <&uart4_idle_pins_a>;
+	status = "okay";
+};
diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
index 70a0fcd91e..dcd9316f3f 100644
--- a/arch/arm/mach-stm32mp/Kconfig
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -96,6 +96,11 @@ config TARGET_ICORE_STM32MP1
 	  * i.Core STM32MP1 needs to mount on top of EDIMM2.2 for
 	    creating complete i.Core STM32MP1 EDIMM2.2 Starter Kit.
 
+	  i.Core STM32MP1 C.TOUCH 2.0
+	  * C.TOUCH 2.0 is a general purpose Carrier board.
+	  * i.Core STM32MP1 needs to mount on top of this Carrier board
+	    for creating complete i.Core STM32MP1 C.TOUCH 2.0 board.
+
 config TARGET_DH_STM32MP1_PDK2
 	bool "DH STM32MP1 PDK2"
 	select STM32MP15x