diff options
| author | Patrice Chotard <patrice.chotard@st.com> | 2019-02-12 16:50:41 +0100 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2019-04-12 16:09:13 +0200 |
| commit | 77457fa94ebcf60f95a08d3ea7574035bff3bc93 (patch) | |
| tree | 43e22434b77d46d5bdd3ba89e558a84a790a2377 /arch/arm/dts | |
| parent | 395f12976c87c59ec9836027687d395990a9f961 (diff) | |
ARM: dts: stm32mp1: Add adc nodes
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>
Diffstat (limited to 'arch/arm/dts')
| -rw-r--r-- | arch/arm/dts/stm32mp157-pinctrl.dtsi | 7 | ||||
| -rw-r--r-- | arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi | 21 |
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/dts/stm32mp157-pinctrl.dtsi b/arch/arm/dts/stm32mp157-pinctrl.dtsi index 4d2bf33be7..c069875486 100644 --- a/arch/arm/dts/stm32mp157-pinctrl.dtsi +++ b/arch/arm/dts/stm32mp157-pinctrl.dtsi @@ -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)>; diff --git a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi index b4cfba0a38..af7acfa037 100644 --- a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi @@ -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; }; |