dt-bindings: gpio: cavium,thunder-8890: Remove DT binding

Remove the cavium,thunder-8890 GPIO binding as there are no active
use cases. The binding is unused as the corresponding kernel driver
binds via PCI and not the compatible.

Signed-off-by: Shi Hao <i.shihao.999@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260408093313.17025-1-i.shihao.999@gmail.com
[Bartosz: tweaked the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

diff --git a/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
deleted file mode 100644 (file)
index 3f883ae..0000000
--- a/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-Cavium ThunderX/OCTEON-TX GPIO controller bindings
-
-Required Properties:
-- reg: The controller bus address.
-- gpio-controller: Marks the device node as a GPIO controller.
-- #gpio-cells: Must be 2.
-  - First cell is the GPIO pin number relative to the controller.
-  - Second cell is a standard generic flag bitfield as described in gpio.txt.
-
-Optional Properties:
-- compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used.
-- interrupt-controller: Marks the device node as an interrupt controller.
-- #interrupt-cells: Must be present and have value of 2 if
-                    "interrupt-controller" is present.
-  - First cell is the GPIO pin number relative to the controller.
-  - Second cell is triggering flags as defined in interrupts.txt.
-
-Example:
-
-gpio_6_0: gpio@6,0 {
-       compatible = "cavium,thunder-8890-gpio";
-       reg = <0x3000 0 0 0 0>; /*  DEVFN = 0x30 (6:0) */
-       gpio-controller;
-       #gpio-cells = <2>;
-       interrupt-controller;
-       #interrupt-cells = <2>;
-};