arch/mips/boot/dts/pic32/pic32mzda-clk.dtsi

/*
 * Device Tree Source for PIC32MZDA clock data
 *
 * Purna Chandra Mandal <purna.mandal@microchip.com>
 * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
 *
 * Licensed under GPLv2 or later.
 */

/* all fixed rate clocks */

/ {
	POSC:posc_clk { /* On-chip primary oscillator */
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
	};

	FRC:frc_clk { /* internal FRC oscillator */
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <8000000>;
	};

	BFRC:bfrc_clk { /* internal backup FRC oscillator */
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <8000000>;
	};

	LPRC:lprc_clk { /* internal low-power FRC oscillator */
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32000>;
	};

	/* UPLL provides clock to USBCORE */
	UPLL:usb_phy_clk {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
		clock-output-names = "usbphy_clk";
	};

	TxCKI:txcki_clk { /* external clock input on TxCLKI pin */
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <4000000>;
		status = "disabled";
	};

	/* external clock input on REFCLKIx pin */
	REFIx:refix_clk {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
		status = "disabled";
	};

	/* PIC32 specific clks */
	pic32_clktree {
		#address-cells = <1>;
		#size-cells = <1>;
		reg = <0x1f801200 0x200>;
		compatible = "microchip,pic32mzda-clk";
		ranges = <0 0x1f801200 0x200>;

		/* secondary oscillator; external input on SOSCI pin */
		SOSC:sosc_clk@0 {
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-sosc";
			clock-frequency = <32768>;
			reg = <0x000 0x10>,   /* enable reg */
			      <0x1d0 0x10>; /* status reg */
			microchip,bit-mask = <0x02>; /* enable mask */
			microchip,status-bit-mask = <0x10>; /* status-mask*/
		};

		FRCDIV:frcdiv_clk {
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-frcdivclk";
			clocks = <&FRC>;
			clock-output-names = "frcdiv_clk";
		};

		/* System PLL clock */
		SYSPLL:spll_clk@020 {
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-syspll";
			reg = <0x020 0x10>, /* SPLL register */
			      <0x1d0 0x10>; /* CLKSTAT register */
			clocks = <&POSC>, <&FRC>;
			clock-output-names = "sys_pll";
			microchip,status-bit-mask = <0x80>; /* SPLLRDY */
		};

		/* system clock; mux with postdiv & slew */
		SYSCLK:sys_clk@1c0 {
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-sysclk-v2";
			reg = <0x1c0 0x04>; /* SLEWCON */
			clocks = <&FRCDIV>, <&SYSPLL>, <&POSC>, <&SOSC>,
				 <&LPRC>, <&FRCDIV>;
			microchip,clock-indices = <0>, <1>, <2>, <4>,
						  <5>, <7>;
			clock-output-names = "sys_clk";
		};

		/* Peripheral bus1 clock */
		PBCLK1:pb1_clk@140 {
			reg = <0x140 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			clock-output-names = "pb1_clk";
			/* used by system modules, not gateable */
			microchip,ignore-unused;
		};

		/* Peripheral bus2 clock */
		PBCLK2:pb2_clk@150 {
			reg = <0x150 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			clock-output-names = "pb2_clk";
			/* avoid gating even if unused */
			microchip,ignore-unused;
		};

		/* Peripheral bus3 clock */
		PBCLK3:pb3_clk@160 {
			reg = <0x160 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			clock-output-names = "pb3_clk";
		};

		/* Peripheral bus4 clock(I/O ports, GPIO) */
		PBCLK4:pb4_clk@170 {
			reg = <0x170 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			clock-output-names = "pb4_clk";
		};

		/* Peripheral bus clock */
		PBCLK5:pb5_clk@180 {
			reg = <0x180 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			clock-output-names = "pb5_clk";
		};

		/* Peripheral Bus6 clock; */
		PBCLK6:pb6_clk@190 {
			reg = <0x190 0x10>;
			compatible = "microchip,pic32mzda-pbclk";
			clocks = <&SYSCLK>;
			#clock-cells = <0>;
		};

		/* Peripheral bus7 clock */
		PBCLK7:pb7_clk@1a0 {
			reg = <0x1a0 0x10>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-pbclk";
			/* CPU is driven by this clock; so named */
			clock-output-names = "cpu_clk";
			clocks = <&SYSCLK>;
		};

		/* Reference Oscillator clock for SPI/I2S */
		REFCLKO1:refo1_clk@80 {
			reg = <0x080 0x20>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-refoclk";
			clocks = <&SYSCLK>, <&PBCLK1>, <&POSC>, <&FRC>, <&LPRC>,
				 <&SOSC>, <&SYSPLL>, <&REFIx>, <&BFRC>;
			microchip,clock-indices = <0>, <1>, <2>, <3>, <4>,
						  <5>, <7>, <8>, <9>;
			clock-output-names = "refo1_clk";
		};

		/* Reference Oscillator clock for SQI */
		REFCLKO2:refo2_clk@a0 {
			reg = <0x0a0 0x20>;
			#clock-cells = <0>;
			compatible = "microchip,pic32mzda-refoclk";
			clocks = <&SYSCLK>, <&PBCLK1>, <&POSC>, <&FRC>, <&LPRC>,
				 <&SOSC>, <&SYSPLL>, <&REFIx>, <&BFRC>;
			microchip,clock-indices = <0>, <1>, <2>, <3>, <4>,
						  <5>, <7>, <8>, <9>;
			clock-output-names = "refo2_clk";
		};

		/* Reference Oscillator clock, ADC */
		REFCLKO3:refo3_clk@c0 {
			reg = <0x0c0 0x20>;
			compatible = "microchip,pic32mzda-refoclk";
			clocks = <&SYSCLK>, <&PBCLK1>, <&POSC>, <&FRC>, <&LPRC>,
				 <&SOSC>, <&SYSPLL>, <&REFIx>, <&BFRC>;
			microchip,clock-indices = <0>, <1>, <2>, <3>, <4>,
						  <5>, <7>, <8>, <9>;
			#clock-cells = <0>;
			clock-output-names = "refo3_clk";
		};

		/* Reference Oscillator clock */
		REFCLKO4:refo4_clk@e0 {
			reg = <0x0e0 0x20>;
			compatible = "microchip,pic32mzda-refoclk";
			clocks = <&SYSCLK>, <&PBCLK1>, <&POSC>, <&FRC>, <&LPRC>,
				 <&SOSC>, <&SYSPLL>, <&REFIx>, <&BFRC>;
			microchip,clock-indices = <0>, <1>, <2>, <3>, <4>,
						  <5>, <7>, <8>, <9>;
			#clock-cells = <0>;
			clock-output-names = "refo4_clk";
		};

		/* Reference Oscillator clock, LCD */
		REFCLKO5:refo5_clk@100 {
			reg = <0x100 0x20>;
			compatible = "microchip,pic32mzda-refoclk";
			clocks = <&SYSCLK>,<&PBCLK1>,<&POSC>,<&FRC>,<&LPRC>,
				 <&SOSC>,<&SYSPLL>,<&REFIx>,<&BFRC>;
			microchip,clock-indices = <0>, <1>, <2>, <3>, <4>,
						  <5>, <7>, <8>, <9>;
			#clock-cells = <0>;
			clock-output-names = "refo5_clk";
		};
	};
};