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Commit d6bdd009 authored by Brendan Higgins's avatar Brendan Higgins Committed by Arnd Bergmann
Browse files

arm: dts: add Nuvoton NPCM750 device tree 



Add a common device tree for all Nuvoton NPCM750 BMCs and a board
specific device tree for the NPCM750 (Poleg) evaluation board.

Signed-off-by: default avatarBrendan Higgins <brendanhiggins@google.com>
Reviewed-by: default avatarTomer Maimon <tmaimon77@gmail.com>
Reviewed-by: default avatarAvi Fishman <avifishman70@gmail.com>
Reviewed-by: default avatarJoel Stanley <joel@jms.id.au>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Tested-by: default avatarTomer Maimon <tmaimon77@gmail.com>
Tested-by: default avatarAvi Fishman <avifishman70@gmail.com>
Tested-by: default avatarJoel Stanley <joel@jms.id.au>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 1796483f

Documentation/devicetree/bindings/arm/cpu-enable-method/nuvoton,npcm750-smp

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=========================================================

Secondary CPU enable-method "nuvoton,npcm750-smp" binding

=========================================================



To apply to all CPUs, a single "nuvoton,npcm750-smp" enable method should be

defined in the "cpus" node.



Enable method name:	"nuvoton,npcm750-smp"

Compatible machines:	"nuvoton,npcm750"

Compatible CPUs:	"arm,cortex-a9"

Related properties:	(none)



Note:

This enable method needs valid nodes compatible with "arm,cortex-a9-scu" and

"nuvoton,npcm750-gcr".



Example:



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;

		enable-method = "nuvoton,npcm750-smp";



		cpu@0 {

			device_type = "cpu";

			compatible = "arm,cortex-a9";

			clocks = <&clk NPCM7XX_CLK_CPU>;

			clock-names = "clk_cpu";

			reg = <0>;

			next-level-cache = <&L2>;

		};



		cpu@1 {

			device_type = "cpu";

			compatible = "arm,cortex-a9";

			clocks = <&clk NPCM7XX_CLK_CPU>;

			clock-names = "clk_cpu";

			reg = <1>;

			next-level-cache = <&L2>;

		};

	};

Documentation/devicetree/bindings/arm/npcm/npcm.txt

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NPCM Platforms Device Tree Bindings

-----------------------------------

NPCM750 SoC

Required root node properties:

	- compatible = "nuvoton,npcm750";

arch/arm/boot/dts/Makefile

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@@ -304,6 +304,8 @@ dtb-$(CONFIG_ARCH_LPC18XX) += \ 
dtb-$(CONFIG_ARCH_LPC32XX) += \

	lpc3250-ea3250.dtb \

	lpc3250-phy3250.dtb

dtb-$(CONFIG_ARCH_NPCM750) += \

	nuvoton-npcm750-evb.dtb

dtb-$(CONFIG_MACH_MESON6) += \

	meson6-atv1200.dtb

dtb-$(CONFIG_MACH_MESON8) += \

arch/arm/boot/dts/nuvoton-npcm750-evb.dts

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// SPDX-License-Identifier: GPL-2.0

// Copyright (c) 2018 Nuvoton Technology corporation.

// Copyright 2018 Google, Inc.



/dts-v1/;

#include "nuvoton-npcm750.dtsi"



/ {

	model = "Nuvoton npcm750 Development Board (Device Tree)";

	compatible = "nuvoton,npcm750";



	chosen {

		stdout-path = &serial3;

	};



	memory {

		reg = <0 0x40000000>;

	};

};



&serial0 {

	status = "okay";

};



&serial1 {

	status = "okay";

};



&serial2 {

	status = "okay";

};



&serial3 {

	status = "okay";

};

arch/arm/boot/dts/nuvoton-npcm750.dtsi

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// SPDX-License-Identifier: GPL-2.0

// Copyright (c) 2018 Nuvoton Technology corporation.

// Copyright 2018 Google, Inc.



#include <dt-bindings/interrupt-controller/arm-gic.h>



/ {

	#address-cells = <1>;

	#size-cells = <1>;

	interrupt-parent = <&gic>;



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;

		enable-method = "nuvoton,npcm750-smp";



		cpu@0 {

			device_type = "cpu";

			compatible = "arm,cortex-a9";

			clocks = <&clk 10>;

			clock-names = "clk_cpu";

			reg = <0>;

			next-level-cache = <&l2>;

		};



		cpu@1 {

			device_type = "cpu";

			compatible = "arm,cortex-a9";

			clocks = <&clk 10>;

			clock-names = "clk_cpu";

			reg = <1>;

			next-level-cache = <&l2>;

		};

	};



	/* external clock signal rg1refck, supplied by the phy */

	clk-rg1refck {

		compatible = "fixed-clock";

		#clock-cells = <0>;

		clock-frequency = <125000000>;

	};



	/* external clock signal rg2refck, supplied by the phy */

	clk-rg2refck {

		compatible = "fixed-clock";

		#clock-cells = <0>;

		clock-frequency = <125000000>;

	};



	clk-xin {

		compatible = "fixed-clock";

		#clock-cells = <0>;

		clock-frequency = <50000000>;

	};



	soc {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "simple-bus";

		interrupt-parent = <&gic>;

		ranges = <0x0 0xf0000000 0x00900000>;



		gcr: gcr@800000 {

			compatible = "nuvoton,npcm750-gcr", "syscon",

				"simple-mfd";

			reg = <0x800000 0x1000>;

		};



		scu: scu@3fe000 {

			compatible = "arm,cortex-a9-scu";

			reg = <0x3fe000 0x1000>;

		};



		l2: cache-controller@3fc000 {

			compatible = "arm,pl310-cache";

			reg = <0x3fc000 0x1000>;

			interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;

			cache-unified;

			cache-level = <2>;

			clocks = <&clk 22>;

			arm,shared-override;

		};



		gic: interrupt-controller@3ff000 {

			compatible = "arm,cortex-a9-gic";

			interrupt-controller;

			#interrupt-cells = <3>;

			reg = <0x3ff000 0x1000>,

			    <0x3fe100 0x100>;

		};



		timer@3fe600 {

			compatible = "arm,cortex-a9-twd-timer";

			reg = <0x3fe600 0x20>;

			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |

						  IRQ_TYPE_LEVEL_HIGH)>;

			clocks = <&clk 15>;

		};

	};



	ahb {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "simple-bus";

		interrupt-parent = <&gic>;

		ranges;



		clk: clock-controller@f0801000 {

			compatible = "nuvoton,npcm750-clk";

			#clock-cells = <1>;

			reg = <0xf0801000 0x1000>;

		};



		apb {

			#address-cells = <1>;

			#size-cells = <1>;

			compatible = "simple-bus";

			interrupt-parent = <&gic>;

			ranges = <0x0 0xf0000000 0x00300000>;



			timer0: timer@8000 {

				compatible = "nuvoton,npcm750-timer";

				interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;

				reg = <0x8000 0x1000>;

				clocks = <&clk 15>;

			};



			serial0: serial@1000 {

				compatible = "ns16550a";

				reg = <0x1000 0x1000>;

				clocks = <&clk 14>;

				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;

				reg-shift = <2>;

				status = "disabled";

			};



			serial1: serial@2000 {

				compatible = "ns16550a";

				reg = <0x2000 0x1000>;

				clocks = <&clk 14>;

				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;

				reg-shift = <2>;

				status = "disabled";

			};



			serial2: serial@3000 {

				compatible = "ns16550a";

				reg = <0x3000 0x1000>;

				clocks = <&clk 14>;

				interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;

				reg-shift = <2>;

				status = "disabled";

			};



			serial3: serial@4000 {

				compatible = "ns16550a";

				reg = <0x4000 0x1000>;

				clocks = <&clk 14>;

				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;

				reg-shift = <2>;

				status = "disabled";

			};

		};

	};

};