arm64: dts: Add MediaTek MT8186 dts and evaluation board and Makefile

MT8186 is a SoC based on 64bit ARMv8 architecture. It contains 6 CA55
and 2 CA76 cores. MT8186 share many HW IP with MT65xx series.

We add basic chip support for MediaTek MT8186 on evaluation board.
Signed-off-by: Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
Link: https://lore.kernel.org/r/20220825170448.17024-1-allen-kh.cheng@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/Makefile

@@ -37,6 +37,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-kodama-sku32.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku0.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-kukui-krane-sku176.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-pumpkin.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-hayato-r1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-spherion-r0.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-evb.dtb

arch/arm64/boot/dts/mediatek/mt8186-evb.dts

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) 2022 MediaTek Inc.
+ */
+/dts-v1/;
+#include "mt8186.dtsi"
+
+/ {
+	model = "MediaTek MT8186 evaluation board";
+	compatible = "mediatek,mt8186-evb", "mediatek,mt8186";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:921600n8";
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0 0x40000000 0 0x80000000>;
+	};
+};
+
+&i2c0 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+};
+
+&i2c1 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	i2c-scl-internal-delay-ns = <8000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+};
+
+&i2c2 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	i2c-scl-internal-delay-ns = <10000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_pins>;
+};
+
+&i2c3 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c3_pins>;
+};
+
+&i2c4 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c4_pins>;
+};
+
+&i2c5 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c5_pins>;
+};
+
+&i2c6 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c6_pins>;
+};
+
+&i2c7 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c7_pins>;
+};
+
+&i2c8 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c8_pins>;
+};
+
+&i2c9 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c9_pins>;
+};
+
+&pio {
+	i2c0_pins: i2c0-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO128__FUNC_SDA0>,
+				 <PINMUX_GPIO127__FUNC_SCL0>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c1_pins: i2c1-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO130__FUNC_SDA1>,
+				 <PINMUX_GPIO129__FUNC_SCL1>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c2_pins: i2c2-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO132__FUNC_SDA2>,
+				 <PINMUX_GPIO131__FUNC_SCL2>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c3_pins: i2c3-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO134__FUNC_SDA3>,
+				 <PINMUX_GPIO133__FUNC_SCL3>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c4_pins: i2c4-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO136__FUNC_SDA4>,
+				 <PINMUX_GPIO135__FUNC_SCL4>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c5_pins: i2c5-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO138__FUNC_SDA5>,
+				 <PINMUX_GPIO137__FUNC_SCL5>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c6_pins: i2c6-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO140__FUNC_SDA6>,
+				 <PINMUX_GPIO139__FUNC_SCL6>;
+			bias-pull-up = <MTK_PULL_SET_RSEL_001>;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c7_pins: i2c7-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO142__FUNC_SDA7>,
+				 <PINMUX_GPIO141__FUNC_SCL7>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c8_pins: i2c8-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO144__FUNC_SDA8>,
+				 <PINMUX_GPIO143__FUNC_SCL8>;
+			bias-disable;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+
+	i2c9_pins: i2c9-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO146__FUNC_SDA9>,
+				 <PINMUX_GPIO145__FUNC_SCL9>;
+			bias-pull-up = <MTK_PULL_SET_RSEL_001>;
+			drive-strength-microamp = <1000>;
+			input-enable;
+		};
+	};
+};
+
+&u3phy0 {
+	status = "okay";
+};
+
+&u3phy1 {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};