linux-kernel - [PATCH 8/9] ARM: dts: stm32: add alternate pinmux for HDP pin and add HDP pinctrl node

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Message-ID: <20250225-hdp-upstream-v1-8-9d049c65330a@foss.st.com>
Date: Tue, 25 Feb 2025 09:48:07 +0100
From: Clément Le Goffic <clement.legoffic@...s.st.com>
To: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Bartosz Golaszewski <brgl@...ev.pl>
CC: <linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        Clément Le Goffic
	<clement.legoffic@...s.st.com>
Subject: [PATCH 8/9] ARM: dts: stm32: add alternate pinmux for HDP pin and
 add HDP pinctrl node

Introduce hdp node to output a user defined value on port hdp2.
Add pinctrl nodes to be able to output this signal on one SoC pin.

Signed-off-by: Clément Le Goffic <clement.legoffic@...s.st.com>
---
 arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
index 95fafc51a1c8..76ff0d6634b4 100644
--- a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
@@ -4,6 +4,15 @@
  * Author: Ludovic Barre <ludovic.barre@...com> for STMicroelectronics.
  */
 #include <dt-bindings/pinctrl/stm32-pinfunc.h>
+#include <dt-bindings/pinctrl/stm32mp15-hdp.h>
+
+&hdp {
+	/omit-if-no-ref/
+	hdp2_gpo: hdp2-pins {
+		function = HDP2_GPOVAL_2;
+		pins = "hdp2";
+	};
+};
 
 &pinctrl {
 	/omit-if-no-ref/
@@ -687,6 +696,23 @@ pins {
 		};
 	};
 
+	/omit-if-no-ref/
+	hdp2_pins_a: hdp2-0 {
+		pins {
+			pinmux = <STM32_PINMUX('E', 13, AF0)>; /* HDP2 */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <2>;
+		};
+	};
+
+	/omit-if-no-ref/
+	hdp2_sleep_pins_a: hdp2-sleep-0 {
+		pins {
+			pinmux = <STM32_PINMUX('E', 13, ANALOG)>; /* HDP2 */
+		};
+	};
+
 	/omit-if-no-ref/
 	i2c1_pins_a: i2c1-0 {
 		pins {

-- 
2.43.0