xref: /openbmc/linux/arch/arm/boot/dts/broadcom/bcm-cygnus-clock.dtsi (revision 724ba675)

/*
 *  BSD LICENSE
 *
 *  Copyright(c) 2014 Broadcom Corporation.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the
 *      distribution.
 *    * Neither the name of Broadcom Corporation nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

clocks {
	#address-cells = <1>;
	#size-cells = <1>;
	ranges;

	osc: oscillator {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <25000000>;
	};

	/* Cygnus ARM PLL */
	armpll: armpll@19000000 {
		#clock-cells = <0>;
		compatible = "brcm,cygnus-armpll";
		clocks = <&osc>;
		reg = <0x19000000 0x1000>;
	};

	/* peripheral clock for system timer */
	periph_clk: arm_periph_clk {
		#clock-cells = <0>;
		compatible = "fixed-factor-clock";
		clocks = <&armpll>;
		clock-div = <2>;
		clock-mult = <1>;
	};

	/* APB bus clock */
	apb_clk: apb_clk {
		#clock-cells = <0>;
		compatible = "fixed-factor-clock";
		clocks = <&armpll>;
		clock-div = <4>;
		clock-mult = <1>;
	};

	genpll: genpll@301d000 {
		#clock-cells = <1>;
		compatible = "brcm,cygnus-genpll";
		reg = <0x0301d000 0x2c>, <0x0301c020 0x4>;
		clocks = <&osc>;
		clock-output-names = "genpll", "axi21", "250mhz", "ihost_sys",
				     "enet_sw", "audio_125", "can";
	};

	/* always 1/2 of the axi21 clock */
	axi41_clk: axi41_clk {
		#clock-cells = <0>;
		compatible = "fixed-factor-clock";
		clocks = <&genpll 1>;
		clock-div = <2>;
		clock-mult = <1>;
	};

	/* always 1/4 of the axi21 clock */
	axi81_clk: axi81_clk {
		#clock-cells = <0>;
		compatible = "fixed-factor-clock";
		clocks = <&genpll 1>;
		clock-div = <4>;
		clock-mult = <1>;
	};

	lcpll0: lcpll0@301d02c {
		#clock-cells = <1>;
		compatible = "brcm,cygnus-lcpll0";
		reg = <0x0301d02c 0x1c>, <0x0301c020 0x4>;
		clocks = <&osc>;
		clock-output-names = "lcpll0", "pcie_phy", "ddr_phy", "sdio",
				     "usb_phy", "smart_card", "ch5";
	};

	mipipll: mipipll@180a9800 {
		#clock-cells = <1>;
		compatible = "brcm,cygnus-mipipll";
		reg = <0x180a9800 0x2c>, <0x0301c020 0x4>, <0x180aa024 0x4>;
		clocks = <&osc>;
		clock-output-names = "mipipll", "ch0_unused", "ch1_lcd",
				     "ch2_v3d", "ch3_unused", "ch4_unused",
				     "ch5_unused";
	};

	asiu_clks: asiu_clks@301d048 {
		#clock-cells = <1>;
		compatible = "brcm,cygnus-asiu-clk";
		reg = <0x0301d048 0xc>, <0x180aa024 0x4>;

		clocks = <&osc>;
		clock-output-names = "keypad", "adc/touch", "pwm";
	};

	audiopll: audiopll@180aeb00 {
		#clock-cells = <1>;
		compatible = "brcm,cygnus-audiopll";
		reg = <0x180aeb00 0x68>;
		clocks = <&osc>;
		clock-output-names = "audiopll", "ch0_audio",
					"ch1_audio", "ch2_audio";
	};
};