aiodev: imx7_adc driver

[Christian Eggers]

Hello Ahmad,

I forgot to mention that I still use barebox-2021.10. In this version,
regulator_get_voltage() returned an error code. After applying the missing
commit, I works find.

Maybe I could add the vf610_adc driver (works for i.MX6 series) to the 
upstream barebox later ...

regards,
Christian

On Wednesday, 23 August 2023, 18:25:05 CEST, Ahmad Fatoum wrote:
> Hello Christian,
> 
> On 23.08.23 17:05, Christian Eggers wrote:
> > Seems that I found the answer myself:
> > 
> > https://git.pengutronix.de/cgit/barebox/commit/?id=d353ffd5c6e6d4cee6eee72726125c965a0814f0
> 
> (y).
> 
> Did you run into any problems at runtime?
> 
> Cheers,
> Ahmad
> 
> > 
> > regards,
> > Christian
> > 
> > On Wednesday, 23 August 2023, 16:53:04 CEST, Christian Eggers wrote:
> >> Hi Ahmad,
> >>
> >> I am currently porting the vf610_adc driver from Linux to Barebox.
> >> Must thing can be done similar as for the imx7_adc driver.
> >>
> >> I have one question about the reference voltage:
> >>
> >> static int imx7d_adc_enable(struct imx7d_adc *info)
> >> {
> >> ...
> >> ret = regulator_get_voltage(info->vref);
> >> ...
> >> }
> >>
> >> What type of regulator do you use? I have declared a
> >> fixed regulator in my device tree:
> >>
> >> reg_adc_vref_3v3: regulator-3v3-adc {
> >> compatible = "regulator-fixed";
> >> regulator-name = "vref-3v3";
> >> regulator-min-microvolt = <3300000>;
> >> regulator-max-microvolt = <3300000>;
> >> };
> >>
> >> &adc2 {
> >> pinctrl-names = "default";
> >> pinctrl-0 = <&pinctrl_adc2>;
> >> vref-supply = <&reg_adc_vref_3v3>;
> >> ...
> >> };
> >>
> >> But it looks like the fixed regulator driver in Barebox
> >> doesn't support reading the voltage (the Linux driver
> >> reports the value from "regulator-min-microvolt")?
> >>
> >> regards,
> >> Christian
> >>
> >>
> > 
> > 
> > 
> > 
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> > 	Eggers
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