AD5764, DAC Error in T4241

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AD5764, DAC Error in T4241

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immbalu
Contributor II

Hello, 

We are using AD5764 DAC, which is on spi interface

added the following dac device tree

vdac: fixedregulator0 {
    compatible = "regulator-fixed";
    regulator-name = "vdac";
    regulator-min-microvolt = <5000000>;
    regulator-max-microvolt = <5000000>;
    regulator-boot-on;
};

dac@0 {
    #address-cells = <1>;
    #size-cells = <1>;
    compatible = "adi,ad5764";
    reg = <0x0>;
    spi-max-frequency = <25000000>;
    vrefAB-supply = <&vdac>;
    vrefCD-supply = <&vdac>;
    status = "okay";
};

I'm able to see DAC device files, But when i try to read dac output i'm getting the following error,

root@Q4241:/sys/devices/platform/ffe000000.soc/ffe110000.spi/spi_master/spi0/spi0.0/iio:device0# cat out_voltage0_scale
cat: read error: Invalid argument

Thanks,

Balaji.G

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