arm64: dts: rockchip: Add FriendlyARM NanoPi R2C Plus

The NanoPi R2C Plus is a small variant of NanoPi R2C with a on-board
eMMC flash (8G) included.
Signed-off-by: Tianling Shen <cnsztl@gmail.com>
Link: https://lore.kernel.org/r/20230513135307.26554-2-cnsztl@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/Makefile

@@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-odroid-go3.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-a1.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2c.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2c-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-nanopi-r2s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-orangepi-r1-plus.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3328-orangepi-r1-plus-lts.dtb

arch/arm64/boot/dts/rockchip/rk3328-nanopi-r2c-plus.dts

+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) 2021 FriendlyElec Computer Tech. Co., Ltd.
+ * (http://www.friendlyarm.com)
+ *
+ * Copyright (c) 2023 Tianling Shen <cnsztl@gmail.com>
+ */
+
+/dts-v1/;
+#include "rk3328-nanopi-r2c.dts"
+
+/ {
+	model = "FriendlyElec NanoPi R2C Plus";
+	compatible = "friendlyarm,nanopi-r2c-plus", "rockchip,rk3328";
+
+	aliases {
+		mmc1 = &emmc;
+	};
+};
+
+&emmc {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	max-frequency = <150000000>;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_clk &emmc_cmd &emmc_bus8>;
+	vmmc-supply = <&vcc_io_33>;
+	vqmmc-supply = <&vcc18_emmc>;
+	status = "okay";
+};