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@@ -0,0 +1,78 @@
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+Analog Devices AD5758 DAC device driver
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+
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+Required properties for the AD5758:
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+ - compatible: Must be "adi,ad5758"
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+ - reg: SPI chip select number for the device
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+ - spi-max-frequency: Max SPI frequency to use (< 50000000)
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+ - spi-cpha: is the only mode that is supported
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+
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+Required properties:
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+
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+ - adi,dc-dc-mode: Mode of operation of the dc-to-dc converter
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+ Dynamic Power Control (DPC)
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+ In this mode, the AD5758 circuitry senses the output
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+ voltage and dynamically regulates the supply voltage,
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+ VDPC+, to meet compliance requirements plus an optimized
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+ headroom voltage for the output buffer.
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+
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+ Programmable Power Control (PPC)
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+ In this mode, the VDPC+ voltage is user-programmable to
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+ a fixed level that needs to accommodate the maximum output
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+ load required.
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+
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+ The output of the DAC core is either converted to a
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+ current or voltage output at the VIOUT pin. Only one mode
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+ can be enabled at any one time.
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+
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+ The following values are currently supported:
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+ * 1: DPC current mode
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+ * 2: DPC voltage mode
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+ * 3: PPC current mode
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+
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+ Depending on the selected output mode (voltage or current) one of the
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+ two properties must
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+ be present:
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+
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+ - adi,range-microvolt: Voltage output range
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+ The array of voltage output ranges must contain two fields:
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+ * <0 5000000>: 0 V to 5 V voltage range
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+ * <0 10000000>: 0 V to 10 V voltage range
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+ * <(-5000000) 5000000>: ±5 V voltage range
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+ * <(-10000000) 10000000>: ±10 V voltage range
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+ - adi,range-microamp: Current output range
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+ The array of current output ranges must contain two fields:
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+ * <0 20000>: 0 mA to 20 mA current range
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+ * <0 24000>: 0 mA to 24 mA current range
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+ * <4 24000>: 4 mA to 20 mA current range
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+ * <(-20000) 20000>: ±20 mA current range
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+ * <(-24000) 24000>: ±24 mA current range
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+ * <(-1000) 22000>: −1 mA to +22 mA current range
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+
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+Optional properties:
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+
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+ - adi,dc-dc-ilim-microamp: The dc-to-dc converter current limit
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+ The following values are currently supported [uA]:
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+ * 150000
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+ * 200000
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+ * 250000
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+ * 300000
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+ * 350000
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+ * 400000
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+
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+ - adi,slew-time-us: The time it takes for the output to reach the
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+ full scale [uS]
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+ The supported range is between 133us up to 1023984375us
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+
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+AD5758 Example:
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+
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+ dac@0 {
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+ compatible = "adi,ad5758";
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+ reg = <0>;
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+ spi-max-frequency = <1000000>;
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+ spi-cpha;
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+
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+ adi,dc-dc-mode = <2>;
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+ adi,range-microvolt = <0 10000000>;
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+ adi,dc-dc-ilim-microamp = <200000>;
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+ adi,slew-time-us = <125000>;
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+ };
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Stefan Popa