arm64: dts: exynos: Add initial device tree support for Exynos7885 SoC

Add initial Exynos7885 device tree nodes with dts for the Samsung Galaxy
A8 (2018), a.k.a. "jackpotlte", with model number "SM-A530F".
Currently this includes some clock support, UART support, and I2C nodes.
Signed-off-by: David Virag <virag.david003@gmail.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20220221194958.117361-2-virag.david003@gmail.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

arch/arm64/boot/dts/exynos/Makefile

@@ -3,5 +3,6 @@ dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos5433-tm2.dtb		\
 	exynos5433-tm2e.dtb		\
 	exynos7-espresso.dtb		\
+	exynos7885-jackpotlte.dtb	\
 	exynos850-e850-96.dtb		\
 	exynosautov9-sadk.dtb

arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Samsung Galaxy A8 2018 (jackpotlte/SM-A530F) device tree source
+ *
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2021 Dávid Virág
+ */
+
+/dts-v1/;
+#include "exynos7885.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	model = "Samsung Galaxy A8 (2018)";
+	compatible = "samsung,jackpotlte", "samsung,exynos7885";
+	chassis-type = "handset";
+
+	aliases {
+		serial0 = &serial_0;
+		serial1 = &serial_1;
+		serial2 = &serial_2;
+	};
+
+	chosen {
+		stdout-path = &serial_2;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x3da00000>,
+		      <0x0 0xc0000000 0x40000000>,
+		      <0x8 0x80000000 0x40000000>;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&key_volup &key_voldown &key_power>;
+
+		volup-key {
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+			gpios = <&gpa1 5 GPIO_ACTIVE_LOW>;
+		};
+
+		voldown-key {
+			label = "Volume Down";
+			linux,code = <KEY_VOLUMEDOWN>;
+			gpios = <&gpa1 6 GPIO_ACTIVE_LOW>;
+		};
+
+		power-key {
+			label = "Power";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpa1 7 GPIO_ACTIVE_LOW>;
+			wakeup-source;
+		};
+	};
+};
+
+&oscclk {
+	clock-frequency = <26000000>;
+};
+
+&pinctrl_alive {
+	key_volup: key-volup-pins {
+		samsung,pins = "gpa1-5";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_voldown: key-voldown-pins {
+		samsung,pins = "gpa1-6";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+
+	key_power: key-power-pins {
+		samsung,pins = "gpa1-7";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_F>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+	};
+};
+
+&serial_2 {
+	status = "okay";
+};