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ARM: dts: stm32: add adc support on stm32mp135f-dk

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Configure ADC support on stm32mp135f-dk. ADC can be used for
USB Type-C CC1 & CC2 pins wired to in6 & in12.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
This commit is contained in:
Olivier Moysan 2022-10-12 16:22:05 +02:00 committed by Alexandre Torgue
parent ab2806ddad
commit e46a180c06
1 changed files with 25 additions and 0 deletions
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25
arch/arm/boot/dts/stm32mp135f-dk.dts
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@ -76,6 +76,31 @@ vdd_sd: vdd-sd {
};
};
&adc_1 {
pinctrl-names = "default";
pinctrl-0 = <&adc1_usb_cc_pins_a>;
vdda-supply = <&vdd_adc>;
vref-supply = <&vdd_adc>;
status = "okay";
adc1: adc@0 {
status = "okay";
/*
* Type-C USB_PWR_CC1 & USB_PWR_CC2 on in6 & in12.
* Use at least 5 * RC time, e.g. 5 * (Rp + Rd) * C:
* 5 * (5.1 + 47kOhms) * 5pF => 1.3us.
* Use arbitrary margin here (e.g. 5us).
*/
channel@6 {
reg = <6>;
st,min-sample-time-ns = <5000>;
};
channel@12 {
reg = <12>;
st,min-sample-time-ns = <5000>;
};
};
};
&i2c1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c1_pins_a>;