Re: aiodev: imx7_adc driver

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

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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