[PATCH] Documentation: gpio: Add a note on the deprecated GPIO Testing Driver

[lincoln.wallace@xxxxxxxxxxxxx]

From: Lincoln Wallace <lincoln.wallace@xxxxxxxxxxxxx>

A deprecation note was added on gpio-mockup Kconfig since v6.7,
update the documentation to inform users.

Signed-off-by: Lincoln Wallace <lincoln.wallace@xxxxxxxxxxxxx>
---
 Documentation/admin-guide/gpio/gpio-mockup.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/gpio/gpio-mockup.rst b/Documentation/admin-guide/gpio/gpio-mockup.rst
index 493071da1738..a6424de925da 100644
--- a/Documentation/admin-guide/gpio/gpio-mockup.rst
+++ b/Documentation/admin-guide/gpio/gpio-mockup.rst
@@ -3,6 +3,11 @@
 GPIO Testing Driver
 ===================
 
+.. note::
+    Since kernel version 6.7, this method is being deprecated. Prefer using
+    Documentation/admin-guide/gpio/gpio-sim.rst instead for kernel versions
+    newer than 5.17, which is when gpio-sim was added.
+
 The GPIO Testing Driver (gpio-mockup) provides a way to create simulated GPIO
 chips for testing purposes. The lines exposed by these chips can be accessed
 using the standard GPIO character device interface as well as manipulated
-- 
2.40.1