linux-kernel - [PATCH 2/2] ARM: dts: stm32: add pins muxing for dfsdm on stm32mp13

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Date:   Tue, 19 Sep 2023 18:30:09 +0200
From:   Olivier Moysan <olivier.moysan@...s.st.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     Olivier Moysan <olivier.moysan@...s.st.com>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] ARM: dts: stm32: add pins muxing for dfsdm on stm32mp13

These pins are used for DFSDM on STM32MP13x Disco boards expansion
connector.
Pins mapping:
- EXP_GPIO27	DFSDM1_CKOUT
- EXP_GPIO22	DFSDM1_DATIN3
- EXP_GPIO4	 DFSDM1_DATIN1	(shared with TIM3_CH4)

Signed-off-by: Olivier Moysan <olivier.moysan@...s.st.com>
---
 arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi | 39 +++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
index 5e3e627ceb54..50490053f03d 100644
--- a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
@@ -13,6 +13,45 @@ pins {
 		};
 	};
 
+	dfsdm_clkout_pins_a: dfsdm-clkout-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('C', 3, AF3)>; /* DFSDM_CKOUT */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+	};
+
+	dfsdm_clkout_sleep_pins_a: dfsdm-clkout-sleep-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('C', 3, ANALOG)>; /* DFSDM_CKOUT */
+		};
+	};
+
+	dfsdm_datin1_pins_a: dfsdm-datin1-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('B', 1, AF6)>; /* DFSDM_DATIN1 */
+		};
+	};
+
+	dfsdm_datin1_sleep_pins_a: dfsdm-datin1-sleep-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('B', 1, ANALOG)>; /* DFSDM_DATIN1 */
+		};
+	};
+
+	dfsdm_datin3_pins_a: dfsdm-datin3-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('F', 13, AF6)>; /* DFSDM_DATIN3 */
+		};
+	};
+
+	dfsdm_datin3_sleep_pins_a: dfsdm-datin3-sleep-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('F', 13, ANALOG)>; /* DFSDM_DATIN3 */
+		};
+	};
+
 	i2c1_pins_a: i2c1-0 {
 		pins {
 			pinmux = <STM32_PINMUX('D', 12, AF5)>, /* I2C1_SCL */
-- 
2.25.1