dt-bindings: gpio: gpio_oxnas: remove obsolete bindings

Due to lack of maintenance and stall of development for a few years now,
and since no new features will ever be added upstream, remove the
OX810 and OX820 gpio bindings.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230814-topic-oxnas-upstream-remove-v3-3-04a0c5cdda52@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/gpio/gpio_oxnas.txt b/Documentation/devicetree/bindings/gpio/gpio_oxnas.txt
deleted file mode 100644 (file)
index 9665147..0000000
--- a/Documentation/devicetree/bindings/gpio/gpio_oxnas.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-* Oxford Semiconductor OXNAS SoC GPIO Controller
-
-Please refer to gpio.txt for generic information regarding GPIO bindings.
-
-Required properties:
- - compatible: "oxsemi,ox810se-gpio" or "oxsemi,ox820-gpio"
- - reg: Base address and length for the device.
- - interrupts: The port interrupt shared by all pins.
- - gpio-controller: Marks the port as GPIO controller.
- - #gpio-cells: Two. The first cell is the pin number and
-   the second cell is used to specify the gpio polarity as defined in
-   defined in <dt-bindings/gpio/gpio.h>:
-      0 = GPIO_ACTIVE_HIGH
-      1 = GPIO_ACTIVE_LOW
- - interrupt-controller: Marks the device node as an interrupt controller.
- - #interrupt-cells: Two. The first cell is the GPIO number and second cell
-   is used to specify the trigger type as defined in
-   <dt-bindings/interrupt-controller/irq.h>:
-      IRQ_TYPE_EDGE_RISING
-      IRQ_TYPE_EDGE_FALLING
-      IRQ_TYPE_EDGE_BOTH
- - gpio-ranges: Interaction with the PINCTRL subsystem, it also specifies the
-   gpio base and count, should be in the format of numeric-gpio-range as
-   specified in the gpio.txt file.
-
-Example:
-
-gpio0: gpio@0 {
-       compatible = "oxsemi,ox810se-gpio";
-       reg = <0x000000 0x100000>;
-       interrupts = <21>;
-       #gpio-cells = <2>;
-       gpio-controller;
-       interrupt-controller;
-       #interrupt-cells = <2>;
-       gpio-ranges = <&pinctrl 0 0 32>;
-};
-
-keys {
-       ...
-
-       button-esc {
-               label = "ESC";
-               linux,code = <1>;
-               gpios = <&gpio0 12 0>;
-       };
-};