From: Olivier Moysan <olivier.moysan@foss.st.com>
To: Alexandre Torgue <alexandre.torgue@foss.st.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Fabrice Gasnier <fabrice.gasnier@foss.st.com>,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>, <nuno.sa@analog.com>,
Olivier Moysan <olivier.moysan@foss.st.com>,
Paul Cercueil <paul@crapouillou.net>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Wan Jiabing <wanjiabing@vivo.com>,
Yannick Brosseau <yannick.brosseau@gmail.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>
Subject: [PATCH v3 8/8] ARM: dts: stm32: add adc support on stm32mp135f-dk
Date: Wed, 5 Oct 2022 18:14:24 +0200 [thread overview]
Message-ID: <20221005161424.4537-9-olivier.moysan@foss.st.com> (raw)
In-Reply-To: <20221005161424.4537-1-olivier.moysan@foss.st.com>
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>
---
arch/arm/boot/dts/stm32mp135f-dk.dts | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp135f-dk.dts b/arch/arm/boot/dts/stm32mp135f-dk.dts
index 95068231ed57..5b7630a2452e 100644
--- a/arch/arm/boot/dts/stm32mp135f-dk.dts
+++ b/arch/arm/boot/dts/stm32mp135f-dk.dts
@@ -76,6 +76,32 @@ vdd_adc: vdd-adc {
};
};
+&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>;
+ };
+ };
+};
+
&iwdg2 {
timeout-sec = <32>;
status = "okay";
--
2.25.1
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prev parent reply other threads:[~2022-10-05 16:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 16:14 [PATCH v3 0/8] iio: stm32-adc: add support of adc for stm32mp13 Olivier Moysan
2022-10-05 16:14 ` [PATCH v3 1/8] iio: adc: stm32-adc: fix channel sampling time init Olivier Moysan
2022-10-09 12:42 ` Jonathan Cameron
2022-10-05 16:14 ` [PATCH v3 2/8] dt-bindings: iio: adc: stm32-adc: add stm32mp13 compatibles Olivier Moysan
2022-10-09 12:46 ` Jonathan Cameron
2022-10-05 16:14 ` [PATCH v3 3/8] iio: adc: stm32-adc: add stm32mp13 support Olivier Moysan
2022-10-05 16:14 ` [PATCH v3 4/8] iio: adc: stm32: manage min sampling time on all internal channels Olivier Moysan
2022-10-05 16:14 ` [PATCH v3 5/8] ARM: dts: stm32: add adc support to stm32mp13 Olivier Moysan
2022-10-05 16:14 ` [PATCH v3 6/8] ARM: dts: stm32: add adc pins muxing on stm32mp135f-dk Olivier Moysan
2022-10-05 16:14 ` [PATCH v3 7/8] ARM: dts: stm32: add dummy vdd_adc regulator " Olivier Moysan
2022-10-05 16:14 ` Olivier Moysan [this message]
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