From fb6284b5af6c7fb96aec8dae81de47542db577fb Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Mon, 13 Jun 2022 11:55:17 +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: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
---
 arch/arm/dts/stm32mp15-pinctrl.dtsi | 30 +++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm/dts/stm32mp15-pinctrl.dtsi b/arch/arm/dts/stm32mp15-pinctrl.dtsi
index 823ef2e2aa..dc329bf531 100644
--- a/arch/arm/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/dts/stm32mp15-pinctrl.dtsi
@@ -1835,6 +1835,36 @@
 		};
 	};
 
+	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 */
-- 
2.39.5