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Subject: [PATCH 2/2] arm64: dts: mediatek: Add initial MT7988A and BPI-R4
Date: Tue,  2 Jan 2024 21:59:41 +0100
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From: Rafał Miłecki <rafal@milecki.pl>

MT7988A (AKA MediaTek Filogic 880) is a quad-core ARM Cortex-A73
platform designed for Wi-Fi 7 devices (there is no wireless on SoC
though). The first public MT7988A device is Banana Pi BPI-R4.

Many SoC parts remain to be added (they need their own bindings or
depend on missing clocks). Those present block however are correct and
having base .dtsi will help testing & working on missing stuff.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 arch/arm64/boot/dts/mediatek/Makefile         |   1 +
 .../dts/mediatek/mt7988a-bananapi-bpi-r4.dts  |  11 ++
 arch/arm64/boot/dts/mediatek/mt7988a.dtsi     | 149 ++++++++++++++++++
 3 files changed, 161 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index 1e6f91731e92..0a189d5d8006 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -15,6 +15,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nor.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
new file mode 100644
index 000000000000..efc4ad0b08b8
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+
+/dts-v1/;
+
+#include "mt7988a.dtsi"
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+	model = "Banana Pi BPI-R4";
+	chassis-type = "embedded";
+};
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
new file mode 100644
index 000000000000..0f2ae9c7aef7
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986a";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			compatible = "arm,cortex-a73";
+			reg = <0x0>;
+			device_type = "cpu";
+			enable-method = "psci";
+		};
+
+		cpu@1 {
+			compatible = "arm,cortex-a73";
+			reg = <0x1>;
+			device_type = "cpu";
+			enable-method = "psci";
+		};
+
+		cpu@2 {
+			compatible = "arm,cortex-a73";
+			reg = <0x2>;
+			device_type = "cpu";
+			enable-method = "psci";
+		};
+
+		cpu@3 {
+			compatible = "arm,cortex-a73";
+			reg = <0x3>;
+			device_type = "cpu";
+			enable-method = "psci";
+		};
+	};
+
+	oscillator-40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+		clock-output-names = "clkxtal";
+	};
+
+	pmu {
+		compatible = "arm,cortex-a73-pmu";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	reserved-memory {
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <2>;
+
+		/* 320 KiB reserved for ARM Trusted Firmware (BL31 and BL32) */
+		secmon@43000000 {
+			reg = <0 0x43000000 0 0x50000>;
+			no-map;
+		};
+
+	};
+
+	soc {
+		compatible = "simple-bus";
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <2>;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			reg = <0 0x0c000000 0 0x40000>,  /* GICD */
+			      <0 0x0c080000 0 0x200000>, /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-controller;
+			#interrupt-cells = <3>;
+		};
+
+		watchdog@1001c000 {
+			compatible = "mediatek,mt7988-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+		};
+	};
+
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <1000>;
+			polling-delay = <1000>;
+
+			trips {
+				crit {
+					temperature = <125000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+
+				hot {
+					temperature = <120000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				active-high {
+					temperature = <115000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+
+				active-med {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+
+				active-low {
+					temperature = <40000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+			};
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
-- 
2.35.3