[PATCH 3/3] ARM: dts: suniv: Add Lctech Pi F1C200s devicetree

[Andre Przywara]

The Lctech Pi F1C200s (also previously known under the Cherry Pi brand)
is a small development board with the Allwinner F1C200s SoC. This is the
same as the F1C100s, but with 64MB instead of 32MB co-packaged DRAM.

Alongside the obligatory micro-SD card slot, the board features a
SPI-NAND flash chip, LCD and touch connectors, and unpopulated
expansion header pins.
There are two USB Type-C ports on the board: One supplies the power, also
connects to the USB MUSB OTG controller port. The other one is connected
to an CH340 USB serial chip, which in turn is connected to UART1.

Add a devicetree file, so that the board can be used easily.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
 arch/arm/boot/dts/Makefile                    |  1 +
 arch/arm/boot/dts/suniv-f1c100s.dtsi          |  5 ++
 arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts | 80 +++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 6abf6434eb372..f99c5c20bf7ef 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1394,6 +1394,7 @@ dtb-$(CONFIG_MACH_SUN9I) += \
 	sun9i-a80-cubieboard4.dtb
 dtb-$(CONFIG_MACH_SUNIV) += \
 	suniv-f1c100s-licheepi-nano.dtb \
+	suniv-f1c200s-lctech-pi.dtb \
 	suniv-f1c200s-popstick-v1.1.dtb
 dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
 	tegra20-acer-a500-picasso.dtb \
diff --git a/arch/arm/boot/dts/suniv-f1c100s.dtsi b/arch/arm/boot/dts/suniv-f1c100s.dtsi
index 0f24c766c9fc5..2ec022e92eea8 100644
--- a/arch/arm/boot/dts/suniv-f1c100s.dtsi
+++ b/arch/arm/boot/dts/suniv-f1c100s.dtsi
@@ -201,6 +201,11 @@ uart0_pe_pins: uart0-pe-pins {
 				pins = "PE0", "PE1";
 				function = "uart0";
 			};
+
+			uart1_pa_pins: uart1-pa-pins {
+				pins = "PA2", "PA3";
+				function = "uart1";
+			};
 		};
 
 		timer at 1c20c00 {
diff --git a/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts b/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
new file mode 100644
index 0000000000000..a9d1778395438
--- /dev/null
+++ b/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Arm Ltd,
+ * based on work:
+ *   Copyright 2022 Icenowy Zheng <uwu at icenowy.me>
+ */
+
+/dts-v1/;
+#include "suniv-f1c100s.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Lctech Pi F1C200s";
+	compatible = "lctech,pi-f1c200s", "allwinner,suniv-f1c200s",
+		     "allwinner,suniv-f1c100s";
+
+	aliases {
+		mmc0 = &mmc0;
+		serial0 = &uart1;
+		spi0 = &spi0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	reg_vcc3v3: regulator-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+};
+
+&mmc0 {
+	broken-cd;
+	bus-width = <4>;
+	disable-wp;
+	vmmc-supply = <&reg_vcc3v3>;
+	status = "okay";
+};
+
+&otg_sram {
+	status = "okay";
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pc_pins>;
+	status = "okay";
+
+	flash at 0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <40000000>;
+	};
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pa_pins>;
+	status = "okay";
+};
+
+/*
+ * This is a Type-C socket, but CC1/2 are not connected, and VBUS is connected
+ * to Vin, which supplies the board. Host mode works (if the board is powered
+ * otherwise), but peripheral is probably the intention.
+ */
+&usb_otg {
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};
-- 
2.25.1