From: Christian Eggers <ceggers@arri.de>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: <barebox@lists.infradead.org>
Subject: aiodev: imx7_adc driver
Date: Wed, 23 Aug 2023 16:53:04 +0200 [thread overview]
Message-ID: <5977114.lOV4Wx5bFT@n95hx1g2> (raw)
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 = <®_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
next reply other threads:[~2023-08-23 15:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-23 14:53 Christian Eggers [this message]
2023-08-23 15:05 ` Christian Eggers
2023-08-23 16:25 ` Ahmad Fatoum
2023-08-23 16:30 ` Christian Eggers
2023-08-23 16:32 ` Ahmad Fatoum
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