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ad9528 probe not bringing up vcc-supply on boot

Category: Software
Product Number: AD9528
Software Version: 2021_R1


I have a ad9528 that is powered by a GPIO switched, fixed regulator.  The dts binding is shown below (note that regulator-boot-on and regulator-always-on were debugging attempts):

    vdda_3v3_2: vdda-3v3-2 {
        compatible = "regulator-fixed";
        regulator-name = "vdda_3v3_2";
        regulator-min-microvolt = <3300000>;
        regulator-max-microvolt = <3300000>;
        startup-delay-us = <150000>;
        gpio = <&gpio0 98 0>;

The ad9528 has the following line in it:

    vcc-supply = <&vdda_3v3_2>;

When I boot the ad9528 tried to probe the device before the regulator comes online - this is, of course, problematic because the probe fails.  I have verified everything else in the devicetree is correct by manually enabling the GPIO in U-Boot, supplying power to the device before starting Linux.  When I do this the device probes successfully.

Is there something I am missing?  I looked at the driver code and it looks like it should be enabling the regulator before accessing the device.