From 3d42567279e1328ba90e51b47b80539b9dae007e Mon Sep 17 00:00:00 2001
From: =?utf8?q?Cl=C3=A9ment=20Le=20Goffic?= <clement.legoffic@foss.st.com>
Date: Fri, 11 Jul 2025 09:41:25 +0200
Subject: [PATCH] ARM: dts: stm32: add alternate pinmux for HDP pin and add HDP
 pinctrl node
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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@foss.st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250711-hdp-upstream-v7-7-faeecf7aaee1@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---
 arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi | 25 +++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
index 835b034d0aa7e..8613a6a17ee98 100644
--- a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
@@ -5,6 +5,14 @@
  */
 #include <dt-bindings/pinctrl/stm32-pinfunc.h>
 
+&hdp {
+	/omit-if-no-ref/
+	hdp2_gpo: hdp2-pins {
+		function = "gpoval2";
+		pins = "HDP2";
+	};
+};
+
 &pinctrl {
 	/omit-if-no-ref/
 	adc1_ain_pins_a: adc1-ain-0 {
@@ -731,6 +739,23 @@
 		};
 	};
 
+	/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 {
-- 
2.47.3