ARM: dts: stm32: add pin map for UART8 controller on stm32h743

Add a pin map configuration for using the UART8 controller on the
stm32h743 MCU.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/r/20250427074404.3278732-7-dario.binacchi@amarulasolutions.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/st/stm32h7-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32h7-pinctrl.dtsi
index ad00c1080a9664818302c3ebb0a699ba1b3a3226..96022afd01680c328c468534e027ae7533ea89ee 100644 (file)
--- a/arch/arm/boot/dts/st/stm32h7-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32h7-pinctrl.dtsi
@@ -211,6 +211,19 @@
                };
        };
 
+       uart8_pins_a: uart8-0 {
+               pins1 {
+                       pinmux = <STM32_PINMUX('J', 8, AF8)>; /* UART8_TX */
+                       bias-disable;
+                       drive-push-pull;
+                       slew-rate = <0>;
+               };
+               pins2 {
+                       pinmux = <STM32_PINMUX('J', 9, AF8)>; /* UART8_RX */
+                       bias-disable;
+               };
+       };
+
        usart1_pins_a: usart1-0 {
                pins1 {
                        pinmux = <STM32_PINMUX('B', 14, AF4)>; /* USART1_TX */