From ced0cb456b429a126b8992035b3069db5f77f09e Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Sun, 26 Jun 2022 02:21:03 +0200
Subject: [PATCH] ARM: dts: stm32: Add alternate pinmux for UART4 pins

Add another mux option for UART4 pins, this is used on DRC Compact board.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---
 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 30 ++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index 95781bd8c3099..adcb868318495 100644
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1919,6 +1919,36 @@
 		};
 	};
 
+	uart4_pins_d: uart4-3 {
+		pins1 {
+			pinmux = <STM32_PINMUX('A', 13, AF8)>; /* UART4_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+			bias-disable;
+		};
+	};
+
+	uart4_idle_pins_d: uart4-idle-3 {
+		pins1 {
+			pinmux = <STM32_PINMUX('A', 13, ANALOG)>; /* UART4_TX */
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+			bias-disable;
+		};
+	};
+
+	uart4_sleep_pins_d: uart4-sleep-3 {
+		pins {
+			pinmux = <STM32_PINMUX('A', 13, ANALOG)>, /* UART4_TX */
+				 <STM32_PINMUX('B', 2, ANALOG)>; /* UART4_RX */
+		};
+	};
+
 	uart7_pins_a: uart7-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('E', 8, AF7)>; /* UART7_TX */
-- 
2.30.2