linux-kernel - [RESEND PATCH v2 3/5] ARM: dts: stm32: Add pinmux for CM4 leds pins

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Message-ID: <20250610152309.299438-4-antonio.borneo@foss.st.com>
Date: Tue, 10 Jun 2025 17:23:07 +0200
From: Antonio Borneo <antonio.borneo@...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>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Antonio Borneo <antonio.borneo@...s.st.com>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Fabien Dessenne <fabien.dessenne@...s.st.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [RESEND PATCH v2 3/5] ARM: dts: stm32: Add pinmux for CM4 leds pins

The GPIO H7 on boards stm32mp15xx-dkx and the GPIO D8 on boards
stm32mp15xx-ed1 are used by the coprocessor Cortex-M4.
Linux running on Cortex-A should not use the GPIO and should left
it available for the coprocessor.

Add two pinmux groups, one for each families of boards, setting
the GPIO function as Reserved (RSVD).

Signed-off-by: Antonio Borneo <antonio.borneo@...s.st.com>
---
 arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
index 40605ea85ee1d..835b034d0aa7e 100644
--- a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
@@ -1304,6 +1304,20 @@ pins {
 		};
 	};
 
+	/omit-if-no-ref/
+	m4_leds_orange_pins_a: m4-leds-orange-0 {
+		pins {
+			pinmux = <STM32_PINMUX('H', 7, RSVD)>;
+		};
+	};
+
+	/omit-if-no-ref/
+	m4_leds_orange_pins_b: m4-leds-orange-1 {
+		pins {
+			pinmux = <STM32_PINMUX('D', 8, RSVD)>;
+		};
+	};
+
 	/omit-if-no-ref/
 	mco1_pins_a: mco1-0 {
 		pins {
-- 
2.34.1