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From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
To: linux-kernel@vger.kernel.org
Cc: linux-amarula@amarulasolutions.com,
domenico.acri@engicam.com,
francesco.utel@engicam.com,
Dario Binacchi <dario.binacchi@amarulasolutions.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
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Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Rob Herring <robh@kernel.org>,
devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-stm32@st-md-mailman.stormreply.com
Subject: [PATCH 11/15] arm64: dts: st: add usart1 pins for stm32mp25
Date: Mon, 18 May 2026 16:31:26 +0200
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diff --git a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi index 46c5197dcd63..a72c458b2c6e 100644 --- a/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi @@ -766,6 +766,39 @@ pins { }; }; + /omit-if-no-ref/ + usart1_pins_b: usart1-1 { + pins1 { + pinmux = <STM32_PINMUX('B', 8, AF6)>; /* USART1_TX */ + bias-disable; + drive-push-pull; + slew-rate = <0>; + }; + pins2 { + pinmux = <STM32_PINMUX('B', 10, AF6)>; /* USART1_RX */ + bias-disable; + }; + }; + + /omit-if-no-ref/ + usart1_idle_pins_b: usart1-idle-1 { + pins1 { + pinmux = <STM32_PINMUX('B', 8, ANALOG)>; /* USART1_TX */ + }; + pins2 { + pinmux = <STM32_PINMUX('B', 10, AF6)>; /* USART1_RX */ + bias-disable; + }; + }; + + /omit-if-no-ref/ + usart1_sleep_pins_b: usart1-sleep-1 { + pins { + pinmux = <STM32_PINMUX('B', 8, ANALOG)>, /* USART1_TX */ + <STM32_PINMUX('B', 10, ANALOG)>; /* USART1_RX */ + }; + }; + /omit-if-no-ref/ usart2_pins_a: usart2-0 { pins1 {
Add the usart1 pins used on MicroGEA-STM32MP257-RMM board. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+)