[PATCH v2 4/5] ARM: dts: stm32: add uart7 support to stm32mp15xx-dkx boards

[Erwan Le Ray]

Adds uart7 node to stm32mp15xx-dkx and uart7 alias to stm32mp157a-dk1 and
stm32mp157c-dk2 boards. uart7 pins are connected to Arduino connector.
uart7 is disabled by default.

Signed-off-by: Erwan Le Ray <erwan.le...@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts 
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 65ee61b7667a..4c8be9c8eb20 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -19,6 +19,7 @@
                ethernet0 = &ethernet0;
                serial0 = &uart4;
                serial1 = &usart3;
+               serial2 = &uart7;
        };
 
        chosen {
diff --git a/arch/arm/boot/dts/stm32mp157c-dk2.dts 
b/arch/arm/boot/dts/stm32mp157c-dk2.dts
index fb690a817e28..ffbae4a8753d 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2.dts
@@ -20,6 +20,7 @@
                ethernet0 = &ethernet0;
                serial0 = &uart4;
                serial1 = &usart3;
+               serial2 = &uart7;
        };
 
        chosen {
diff --git a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi 
b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
index 243aa4b2063d..cfbe3e2afef2 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
@@ -591,6 +591,14 @@
        status = "okay";
 };
 
+&uart7 {
+       pinctrl-names = "default", "sleep", "idle";
+       pinctrl-0 = <&uart7_pins_c>;
+       pinctrl-1 = <&uart7_sleep_pins_c>;
+       pinctrl-2 = <&uart7_idle_pins_c>;
+       status = "disabled";
+};
+
 &usart3 {
        pinctrl-names = "default", "sleep", "idle";
        pinctrl-0 = <&usart3_pins_c>;
-- 
2.17.1