[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/Documentation/driver-api/gpio/index.rst b/src/kernel/linux/v4.19/Documentation/driver-api/gpio/index.rst
new file mode 100644
index 0000000..6a374de
--- /dev/null
+++ b/src/kernel/linux/v4.19/Documentation/driver-api/gpio/index.rst
@@ -0,0 +1,48 @@
+===================================
+General Purpose Input/Output (GPIO)
+===================================
+
+Contents:
+
+.. toctree::
+ :maxdepth: 2
+
+ intro
+ driver
+ consumer
+ board
+ drivers-on-gpio
+ legacy
+
+Core
+====
+
+.. kernel-doc:: include/linux/gpio/driver.h
+ :internal:
+
+.. kernel-doc:: drivers/gpio/gpiolib.c
+ :export:
+
+ACPI support
+============
+
+.. kernel-doc:: drivers/gpio/gpiolib-acpi.c
+ :export:
+
+Device tree support
+===================
+
+.. kernel-doc:: drivers/gpio/gpiolib-of.c
+ :export:
+
+Device-managed API
+==================
+
+.. kernel-doc:: drivers/gpio/devres.c
+ :export:
+
+sysfs helpers
+=============
+
+.. kernel-doc:: drivers/gpio/gpiolib-sysfs.c
+ :export: