zynq-zed-adv7511-ad7986.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Analog Devices EVAL-AD7986FMCZ
 * https://www.analog.com/en/products/ad7986.html
 *
 * hdl_project: <pulsar_adc_pmdz/zed>
 * board_revision: <>
 *
 * Copyright (C) 2024 Analog Devices Inc.
 */
/dts-v1/;

#include <dt-bindings/dma/axi-dmac.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>

#include "zynq-zed.dtsi"
#include "zynq-zed-adv7511.dtsi"

/ {
	eval_u3: eval-board-u3-regulator {
		compatible = "regulator-fixed";
		regulator-name = "EVAL +2.5V supply (U3)";
		regulator-min-microvolt = <2500000>;
		regulator-max-microvolt = <2500000>;
		regulator-always-on;
	};

	eval_u5: eval-board-u5-regulator {
		compatible = "regulator-fixed";
		regulator-name = "EVAL +5V supply (U5)";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
		regulator-always-on;
	};

	eval_u10: eval-board-u10-regulator {
		compatible = "regulator-fixed";
		regulator-name = "EVAL +5V supply (U10)";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
		regulator-always-on;
	};

	eval_u12: eval-board-u12-regulator {
		compatible = "regulator-fixed";
		regulator-name = "EVAL +2.5V supply (U12)";
		regulator-min-microvolt = <2500000>;
		regulator-max-microvolt = <2500000>;
		regulator-always-on;
	};

	trigger_clk: adc-trigger-clock {
		compatible = "pwm-clock";
		#clock-cells = <0>;
		pwms = <&adc_trigger 0 10000>;
	};
};

&fpga_axi {
	adc_trigger: pwm@44b00000 {
		compatible = "adi,axi-pwmgen-2.00.a";
		reg = <0x44b00000 0x1000>;
		#pwm-cells = <2>;
		clocks = <&spi_clk>;
	};

	rx_dma: rx-dmac@44a30000 {
		compatible = "adi,axi-dmac-1.00.a";
		reg = <0x44a30000 0x1000>;
		#dma-cells = <1>;
		interrupts = <0 57 IRQ_TYPE_LEVEL_HIGH>;
		clocks = <&clkc 17>;

		adi,channels {
			#size-cells = <0>;
			#address-cells = <1>;

			dma-channel@0 {
				reg = <0>;
				adi,source-bus-width = <32>;
				adi,source-bus-type = <AXI_DMAC_BUS_TYPE_AXI_STREAM>;
				adi,destination-bus-width = <64>;
				adi,destination-bus-type = <AXI_DMAC_BUS_TYPE_AXI_MM>;
			};
		};
	};

	spi_clk: clock-controller@44a70000 {
		compatible = "adi,axi-clkgen-2.00.a";
		reg = <0x44a70000 0x1000>;
		#clock-cells = <0>;
		clocks = <&clkc 15>;
		clock-names = "s_axi_aclk", "clkin1";
		clock-output-names = "spi_clk";

		/* needs to be high enough to allow >= 91.5MHz SCLK for turbo */
		assigned-clocks = <&spi_clk>;
		assigned-clock-rates = <185000000>;
	};

	axi_spi_engine_0: spi@44a00000 {
		compatible = "adi,axi-spi-engine-1.00.a";
		reg = <0x44a00000 0x1000>;
		interrupt-parent = <&intc>;
		interrupts = <0 56 IRQ_TYPE_LEVEL_HIGH>;
		clocks = <&clkc 15>, <&spi_clk>;
		clock-names = "s_axi_aclk", "spi_clk";

		#address-cells = <1>;
		#size-cells = <0>;

		ad7986: adc@0 {
			compatible = "adi,ad7986";
			reg = <0>;
			spi-max-frequency = <111111111>; /* 9 ns period */
			adi,spi-mode = "single";
			avdd-supply = <&eval_u12>;
			dvdd-supply = <&eval_u12>;
			vio-supply = <&eval_u3>;
			bvdd-supply = <&eval_u10>;
			ref-supply = <&eval_u5>;
			turbo-gpios = <&gpio0 87 GPIO_ACTIVE_HIGH>;

			spi-offloads = <0>;
			dmas = <&rx_dma 0>;
			dma-names = "rx";
			clocks = <&trigger_clk>;
			clock-names = "trigger";
		};
	};
};

&gpio0 {
	ad7986-mode {
		/* pull SDI line on ADC high for 3-wire mode */
		gpio-hog;
		gpios = <88 GPIO_ACTIVE_HIGH>;
		output-high;
	};
};