[PATCH v4 1/2] dt-bindings: gpio: Convert STMPE GPIO to YAML schema

[Linus Walleij <linus.walleij@linaro.org>]

This rewrites the STMPE GPIO bindings to a YAML schema.

We add the properties that are used in the widely used
STMPE GPIO device nodes found in the wild, most notably
interrupt support, so interrupt-cells and
interrupt-controller is now part of the bindings.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v3->v4:
- Realize that there were actually some old bindings so we
  need to get rid of them as part of this patch.
- Fix blank lines after description: keyword.
ChangeLog v2->v3:
- Use a compact hog node schema backed by the standard hog
  schema.
ChangeLog v1->v2:
- New patch split off from the MFD patch.
---
 .../devicetree/bindings/gpio/gpio-stmpe.txt        | 17 -------
 .../devicetree/bindings/gpio/st,stmpe-gpio.yaml    | 53 ++++++++++++++++++++++
 2 files changed, 53 insertions(+), 17 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/gpio-stmpe.txt b/Documentation/devicetree/bindings/gpio/gpio-stmpe.txt
deleted file mode 100644
index b33f8f02c0d7..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-stmpe.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-STMPE gpio
-----------
-
-Required properties:
- - compatible: "st,stmpe-gpio"
-
-Optional properties:
- - st,norequest-mask: bitmask specifying which GPIOs should _not_ be requestable
-   due to different usage (e.g. touch, keypad)
-
-Node should be child node of stmpe node to which it belongs.
-
-Example:
-	stmpe_gpio {
-		compatible = "st,stmpe-gpio";
-		st,norequest-mask = <0x20>;	//gpio 5 can't be used
-	};
diff --git a/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml b/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml
new file mode 100644
index 000000000000..22c0cae73425
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/st,stmpe-gpio.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/st,stmpe-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectonics Port Expander (STMPE) GPIO Block
+
+description:
+  STMicroelectronics Port Expander (STMPE) is a series of slow
+  bus controllers for various expanded peripherals such as GPIO, keypad,
+  touchscreen, ADC, PWM or rotator. It can contain one or several different
+  peripherals connected to SPI or I2C. These bindings pertain to the
+  GPIO portions of these expanders.
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+properties:
+  compatible:
+    const: st,stmpe-gpio
+
+  "#gpio-cells":
+    const: 2
+
+  "#interrupt-cells":
+    const: 2
+
+  gpio-controller: true
+
+  interrupt-controller: true
+
+  st,norequest-mask:
+    description:
+      A bitmask of GPIO lines that cannot be requested because for
+      for example not being connected to anything on the system
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+patternProperties:
+  "^.+-hog(-[0-9]+)?$":
+    type: object
+
+    required:
+      - gpio-hog
+
+additionalProperties: false
+
+required:
+  - compatible
+  - "#gpio-cells"
+  - "#interrupt-cells"
+  - gpio-controller
+  - interrupt-controller

-- 
2.34.1