From 0988e6c2cd6cd64f7272c18fe58f3fca26b9120d Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@bootlin.com>
Date: Tue, 13 Aug 2019 14:47:40 +0200
Subject: dt-bindings: mfd: Convert Allwinner GPADC bindings to a schema

The Allwinner SoCs have an embedded GPADC that is doing thermal reading as
well, supported in Linux, with a matching Device Tree binding.

Now that we have the DT validation in place, let's convert the device tree
bindings for that controller over to a YAML schemas.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 .../bindings/mfd/allwinner,sun4i-a10-ts.yaml       | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/allwinner,sun4i-a10-ts.yaml

(limited to 'Documentation/devicetree/bindings/mfd/allwinner,sun4i-a10-ts.yaml')

diff --git a/Documentation/devicetree/bindings/mfd/allwinner,sun4i-a10-ts.yaml b/Documentation/devicetree/bindings/mfd/allwinner,sun4i-a10-ts.yaml
new file mode 100644
index 000000000000..4b1a09acb98b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/allwinner,sun4i-a10-ts.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/allwinner,sun4i-a10-ts.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 Resistive Touchscreen Controller Device Tree Bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <maxime.ripard@bootlin.com>
+
+properties:
+  "#thermal-sensor-cells":
+    const: 0
+
+  compatible:
+    enum:
+      - allwinner,sun4i-a10-ts
+      - allwinner,sun5i-a13-ts
+      - allwinner,sun6i-a31-ts
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  allwinner,ts-attached:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: A touchscreen is attached to the controller
+
+  allwinner,tp-sensitive-adjust:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - minimum: 0
+        maximum: 15
+        default: 15
+    description: Sensitivity of pen down detection
+
+  allwinner,filter-type:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - minimum: 0
+        maximum: 3
+        default: 1
+    description: |
+      Select median and averaging filter. Sample used for median /
+      averaging filter:
+        0: 4/2
+        1: 5/3
+        2: 8/4
+        3: 16/8
+
+required:
+  - "#thermal-sensor-cells"
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    rtp: rtp@1c25000 {
+        compatible = "allwinner,sun4i-a10-ts";
+        reg = <0x01c25000 0x100>;
+        interrupts = <29>;
+        allwinner,ts-attached;
+        #thermal-sensor-cells = <0>;
+        /* sensitive/noisy touch panel */
+        allwinner,tp-sensitive-adjust = <0>;
+        allwinner,filter-type = <3>;
+    };
+
+...
-- 
cgit