arm64: dts: renesas: Add initial device tree for RZ/G2LC SMARC EVK

Add basic support for the RZ/G2LC SMARC EVK (based on R9A07G044C2):
- memory
- External input clock
- SCIF
- GbEthernet
- Audio Clock

It shares the same carrier board with RZ/G2L, but the pin mapping is
different.  Disable the device nodes which are not tested and delete the
corresponding pinctrl definitions.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211216114305.5842-4-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/Makefile

@@ -75,4 +75,5 @@ dtb-$(CONFIG_ARCH_R8A77961) += r8a779m3-ulcb-kf.dtb
 
 dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs.dtb
 
+dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb

arch/arm64/boot/dts/renesas/r9a07g044c2-smarc.dts

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G2LC SMARC EVK board
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r9a07g044c2.dtsi"
+#include "rzg2lc-smarc-som.dtsi"
+#include "rzg2lc-smarc-pinfunction.dtsi"
+#include "rzg2l-smarc.dtsi"
+
+/ {
+	model = "Renesas SMARC EVK based on r9a07g044c2";
+	compatible = "renesas,smarc-evk", "renesas,r9a07g044c2", "renesas,r9a07g044";
+
+};
+
+&canfd {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&ehci0 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&ehci1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&hsusb {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&i2c0 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&i2c1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&i2c3 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&ohci0 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&ohci1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&phyrst {
+	status = "disabled";
+};
+
+&scif2 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&sdhi1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-1;
+	/delete-property/ pinctrl-names;
+	/delete-property/ vmmc-supply;
+	status = "disabled";
+};
+
+&spi1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&ssi0 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&usb2_phy0 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};
+
+&usb2_phy1 {
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	status = "disabled";
+};

arch/arm64/boot/dts/renesas/rzg2lc-smarc-pinfunction.dtsi

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G2LC SMARC pincontrol parts
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+&pinctrl {
+	pinctrl-0 = <&sound_clk_pins>;
+	pinctrl-names = "default";
+
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(38, 0, 1)>,	/* TxD */
+			 <RZG2L_PORT_PINMUX(38, 1, 1)>;	/* RxD */
+	};
+
+	sound_clk_pins: sound_clk {
+		pins = "AUDIO_CLK1", "AUDIO_CLK2";
+		input-enable;
+	};
+};
+

arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G2LC SMARC SOM common parts
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+/ {
+	aliases {
+		ethernet0 = &eth0;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
+	};
+
+	memory@48000000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x38000000>;
+	};
+};
+
+&eth0 {
+	pinctrl-0 = <&eth0_pins>;
+	pinctrl-names = "default";
+	phy-handle = <&phy0>;
+	phy-mode = "rgmii-id";
+	status = "okay";
+
+	phy0: ethernet-phy@7 {
+		compatible = "ethernet-phy-id0022.1640",
+			     "ethernet-phy-ieee802.3-c22";
+		reg = <7>;
+		rxc-skew-psec = <2400>;
+		txc-skew-psec = <2400>;
+		rxdv-skew-psec = <0>;
+		txdv-skew-psec = <0>;
+		rxd0-skew-psec = <0>;
+		rxd1-skew-psec = <0>;
+		rxd2-skew-psec = <0>;
+		rxd3-skew-psec = <0>;
+		txd0-skew-psec = <0>;
+		txd1-skew-psec = <0>;
+		txd2-skew-psec = <0>;
+		txd3-skew-psec = <0>;
+	};
+};
+
+&extal_clk {
+	clock-frequency = <24000000>;
+};
+
+&pinctrl {
+	eth0_pins: eth0 {
+		pinmux = <RZG2L_PORT_PINMUX(28, 1, 1)>, /* ET0_LINKSTA */
+			 <RZG2L_PORT_PINMUX(27, 1, 1)>, /* ET0_MDC */
+			 <RZG2L_PORT_PINMUX(28, 0, 1)>, /* ET0_MDIO */
+			 <RZG2L_PORT_PINMUX(20, 0, 1)>, /* ET0_TXC */
+			 <RZG2L_PORT_PINMUX(20, 1, 1)>, /* ET0_TX_CTL */
+			 <RZG2L_PORT_PINMUX(20, 2, 1)>, /* ET0_TXD0 */
+			 <RZG2L_PORT_PINMUX(21, 0, 1)>, /* ET0_TXD1 */
+			 <RZG2L_PORT_PINMUX(21, 1, 1)>, /* ET0_TXD2 */
+			 <RZG2L_PORT_PINMUX(22, 0, 1)>, /* ET0_TXD3 */
+			 <RZG2L_PORT_PINMUX(24, 0, 1)>, /* ET0_RXC */
+			 <RZG2L_PORT_PINMUX(24, 1, 1)>, /* ET0_RX_CTL */
+			 <RZG2L_PORT_PINMUX(25, 0, 1)>, /* ET0_RXD0 */
+			 <RZG2L_PORT_PINMUX(25, 1, 1)>, /* ET0_RXD1 */
+			 <RZG2L_PORT_PINMUX(26, 0, 1)>, /* ET0_RXD2 */
+			 <RZG2L_PORT_PINMUX(26, 1, 1)>; /* ET0_RXD3 */
+	};
+};
+