ARM: dts: stm32: add low power timer on STM32F746

Add device tree node for the low power timer on the STM32F746.

Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Link: https://lore.kernel.org/r/20250404143514.860126-1-ben.wolsieffer@hefring.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/st/stm32f746.dtsi b/arch/arm/boot/dts/st/stm32f746.dtsi
index 2537b3d47e6f0ce8e0830d8de08a88a71724a02b..208f8c6dfc9dcf1b45a45fbad379124bca66bb67 100644 (file)
--- a/arch/arm/boot/dts/st/stm32f746.dtsi
+++ b/arch/arm/boot/dts/st/stm32f746.dtsi
@@ -43,6 +43,7 @@
 #include "../armv7-m.dtsi"
 #include <dt-bindings/clock/stm32fx-clock.h>
 #include <dt-bindings/mfd/stm32f7-rcc.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
        #address-cells = <1>;
@@ -245,6 +246,39 @@
                        };
                };
 
+               lptimer1: timer@40002400 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       compatible = "st,stm32-lptimer";
+                       reg = <0x40002400 0x400>;
+                       interrupts-extended = <&exti 23 IRQ_TYPE_EDGE_RISING>;
+                       clocks = <&rcc 1 CLK_LPTIMER>;
+                       clock-names = "mux";
+                       status = "disabled";
+
+                       pwm {
+                               compatible = "st,stm32-pwm-lp";
+                               #pwm-cells = <3>;
+                               status = "disabled";
+                       };
+
+                       trigger@0 {
+                               compatible = "st,stm32-lptimer-trigger";
+                               reg = <0>;
+                               status = "disabled";
+                       };
+
+                       counter {
+                               compatible = "st,stm32-lptimer-counter";
+                               status = "disabled";
+                       };
+
+                       timer {
+                               compatible = "st,stm32-lptimer-timer";
+                               status = "disabled";
+                       };
+               };
+
                rtc: rtc@40002800 {
                        compatible = "st,stm32-rtc";
                        reg = <0x40002800 0x400>;