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ARM: dts: stm32mp1: Add adc nodes

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Add adc related nodes. These nodes are used to detect the
current supplied by USB type-C power in port on DK1 and DK2
boards.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2019-02-12 16:50:41 +01:00 committed by Patrick Delaunay
parent 395f12976c
commit 77457fa94e
2 changed files with 28 additions and 0 deletions
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7
arch/arm/dts/stm32mp157-pinctrl.dtsi
View File

@ -148,6 +148,13 @@
gpio-ranges = <&pinctrl 0 160 8>;
};
adc12_usb_pwr_pins_a: adc12-usb-pwr-pins-0 {
pins {
pinmux = <STM32_PINMUX('A', 4, ANALOG)>, /* ADC12 in18 */
<STM32_PINMUX('A', 5, ANALOG)>; /* ADC12 in19 */
};
};
cec_pins_a: cec-0 {
pins {
pinmux = <STM32_PINMUX('A', 15, AF4)>;

21
arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi
View File

@ -31,6 +31,27 @@
};
};
&adc {
pinctrl-names = "default";
pinctrl-0 = <&adc12_usb_pwr_pins_a>;
vdd-supply = <&vdd>;
vdda-supply = <&vdd>;
vref-supply = <&vrefbuf>;
status = "okay";
adc1: adc@0 {
/*
* Type-C USB_PWR_CC1 & USB_PWR_CC2 on in18 & in19.
* Use at least 5 * RC time, e.g. 5 * (Rp + Rd) * C:
* 5 * (56 + 47kOhms) * 5pF => 2.5us.
* Use arbitrary margin here (e.g. 5µs).
*/
st,min-sample-time-nsecs = <5000>;
/* ANA0, ANA1, USB Type-C CC1 & CC2 */
st,adc-channels = <0 1 18 19>;
status = "okay";
};
};
&clk_hse {
st,digbypass;
};