arm64: dts: renesas: Add support for MIPI Adapter V2.1 connected to HiHope RZ/G2M

Add support for AISTARVISION MIPI Adapter V2.1 board connected to HiHope
RZ/G2M board.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201020125134.22625-4-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/Makefile

@@ -3,6 +3,7 @@ dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-beacon-rzg2m-kit.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex-idk-1110wr.dtb
+dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex-mipi-2.1.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-rev2-ex-idk-1110wr.dtb

arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-mipi-2.1.dts

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the HiHope RZ/G2M board
+ * connected with aistarvision-mipi-v2-adapter board
+ *
+ * Copyright (C) 2020 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a774a1-hihope-rzg2m-ex.dts"
+#include "hihope-rzg2-ex-aistarvision-mipi-adapter-2.1.dtsi"
+
+/ {
+	model = "HopeRun HiHope RZ/G2M with sub board connected with aistarvision-mipi-v2-adapter board";
+	compatible = "hoperun,hihope-rzg2m", "renesas,r8a774a1";
+};
+
+/*
+ * On RZ/G2M SoC LSI V1.3 CSI40 supports only 4 lane mode.
+ * HiHope RZ/G2M Rev.4.0 board is based on LSI V1.3 so disable csi40 and
+ * imx219 as the imx219 endpoint driver supports only 2 lane mode.
+ */
+&csi40 {
+	status = "disabled";
+};
+
+&imx219 {
+	status = "disabled";
+};