docs(linux): Power_Management: Fix MCU GPIO wakeup pin

The MCU GPIO wakeup pin was incorrect in the documentation. Updated to
specify the correct pin.

Signed-off-by: Kendall Willis <[email protected]>

Author: kwillis01

source/linux/Foundational_Components/Power_Management/pm_wakeup_sources.rst

@@ -301,26 +301,26 @@ Setup the interrupt parent and interrupt as MCU_GPIO0,
 
 .. code-block:: dts
 
-   interrupt-parent = <&mcu_gpio0>;
-   interrupts = <16 IRQ_TYPE_EDGE_RISING>;
+    interrupt-parent = <&mcu_gpio0>;
+    interrupts = <4 IRQ_TYPE_EDGE_RISING>;
 
 Now, under the switch node we add the following:
 
 .. code-block:: dts
 
-   switch {
-               label = "MCUGPIO";
-               linux,code = <143>;
-               gpios = <&mcu_gpio0 16 GPIO_ACTIVE_LOW>;
-               wakeup-source;
-   };
+    switch {
+                label = "MCUGPIO";
+                linux,code = <143>;
+                gpios = <&mcu_gpio0 4 GPIO_ACTIVE_LOW>;
+                wakeup-source;
+    };
 
 #. The label is the descriptive name of the key. The string will reflect under /proc/interrupts as:
 
     .. code-block:: console
 
-       root@<machine>:~# cat /proc/interrupts | grep "MCUGPIO"
-       262:          0          0          0          0      GPIO  16 Edge    -davinci_gpio  MCUGPIO
+        root@<machine>:~# cat /proc/interrupts | grep "MCUGPIO"
+        273:          0          0          0          0      GPIO  4 Edge    -davinci_gpio  MCUGPIO
 
 #. linux,code: Keycode to emit.
 #. gpios: the gpio required to be used as the gpio-key.
@@ -340,8 +340,8 @@ MCU GPIO wakeup can only be tested when
 overlay is loaded. Please refer to :ref:`How to enable DT overlays<howto_dt_overlays>` for more details.
 
 Once the system has entered Deep Sleep or MCU Only mode as shown in the
-:ref:`LPM section<lpm_modes>`, wakeup from MCU GPIO0_16 can be triggered
-by grounding Pin 11 on J8 MCU Header.
+:ref:`LPM section<lpm_modes>`, wakeup from MCU_SPI0_D1 can be triggered
+by grounding Pin 4 on J8 MCU Header.
 
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