arm64: dts: renesas: r9a07g044: Enable SCI0 using DT overlay

Enable sci0 node using dt overlay and disable can{0,1}-stb-hog
nodes in DT overlay as its pins are shared with sci0 pins.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230321114753.75038-6-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: bijudas

arch/arm64/boot/dts/renesas/Makefile

@@ -76,6 +76,7 @@ dtb-$(CONFIG_ARCH_R8A77961) += r8a779m3-ulcb-kf.dtb
 dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs.dtb
 
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc.dtb
+dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043-smarc-pmod.dtbo
 
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb

arch/arm64/boot/dts/renesas/r9a07g043-smarc-pmod.dtso

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the RZ/{G2UL, Five} SMARC EVK PMOD parts
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ *
+ *
+ * [Connection]
+ *
+ * SMARC EVK
+ * +----------------------------+
+ * |CN7 (PMOD1 PIN HEADER)      |
+ * |	SCI0_TXD	  pin7  |
+ * |	SCI0_RXD	  pin8  |
+ * |	Gnd		  pin11 |
+ * |	Vcc		  pin12 |
+ * +----------------------------+
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+&pinctrl {
+	can0-stb-hog {
+		status = "disabled";
+	};
+
+	can1-stb-hog {
+		status = "disabled";
+	};
+
+	sci0_pins: sci0-pins {
+		pinmux = <RZG2L_PORT_PINMUX(2, 2, 5)>, /* TxD */
+			 <RZG2L_PORT_PINMUX(2, 3, 5)>; /* RxD */
+	};
+};
+
+&sci0 {
+	pinctrl-0 = <&sci0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};