[PATCH 5/6] ARM: dts: stm32: add RTC LSCO support on stm32mp157c-dk2

[Valentin Caron]

From: Gabriel Fernandez <gabriel.fernandez at foss.st.com>

Add LSCO support on stm32mp157c-dk2 board. LSCO output is mapped on
RTC_OUT2_RMP (PI8), directly routed on LPO_IN pin of Wifi/Bluetooth
module.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez at foss.st.com>
Signed-off-by: Valentin Caron <valentin.caron at foss.st.com>
---
 arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 6 ++++++
 arch/arm/boot/dts/stm32mp157c-dk2.dts    | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
index 6052243ad81c..c65d1ea8b614 100644
--- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
@@ -1244,6 +1244,12 @@ pins {
 		};
 	};
 
+	rtc_out2_rmp_pins_a: rtc-out2-rmp-pins-0 {
+		pins {
+			pinmux = <STM32_PINMUX('I', 8, ANALOG)>; /* RTC_OUT2_RMP */
+		};
+	};
+
 	sai2a_pins_a: sai2a-0 {
 		pins {
 			pinmux = <STM32_PINMUX('I', 5, AF10)>, /* SAI2_SCK_A */
diff --git a/arch/arm/boot/dts/stm32mp157c-dk2.dts b/arch/arm/boot/dts/stm32mp157c-dk2.dts
index 2bc92ef3aeb9..a1eda91bc2e3 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2.dts
@@ -11,6 +11,7 @@
 #include "stm32mp15-pinctrl.dtsi"
 #include "stm32mp15xxac-pinctrl.dtsi"
 #include "stm32mp15xx-dkx.dtsi"
+#include <dt-bindings/rtc/rtc-stm32.h>
 
 / {
 	model = "STMicroelectronics STM32MP157C-DK2 Discovery Board";
@@ -92,6 +93,12 @@ ltdc_ep1_out: endpoint at 1 {
 	};
 };
 
+&rtc {
+	st,lsco = <RTC_OUT2_RMP>;
+	pinctrl-0 = <&rtc_out2_rmp_pins_a>;
+	pinctrl-names = "default";
+};
+
 &usart2 {
 	pinctrl-names = "default", "sleep", "idle";
 	pinctrl-0 = <&usart2_pins_c>;
-- 
2.25.1