linux-kernel - [PATCH v2 2/3] dt-bindings: iio: adc: Add Allwinner D1/T113s/R329/T507 SoCs GPADC

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Message-Id: <20230601223104.1243871-3-bigunclemax@gmail.com>
Date:   Fri,  2 Jun 2023 01:30:40 +0300
From:   Maksim Kiselev <bigunclemax@...il.com>
To:     linux-iio@...r.kernel.org
Cc:     Maxim Kiselev <bigunclemax@...il.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Heiko Stuebner <heiko.stuebner@...ll.eu>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Cosmin Tanislav <demonsingur@...il.com>,
        Stephen Boyd <sboyd@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        William Breathitt Gray <william.gray@...aro.org>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Mike Looijmans <mike.looijmans@...ic.nl>,
        ChiYuan Huang <cy_huang@...htek.com>,
        Ramona Bolboaca <ramona.bolboaca@...log.com>,
        Ibrahim Tilki <Ibrahim.Tilki@...log.com>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        ChiaEn Wu <chiaen_wu@...htek.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: [PATCH v2 2/3] dt-bindings: iio: adc: Add Allwinner D1/T113s/R329/T507 SoCs GPADC

From: Maxim Kiselev <bigunclemax@...il.com>

Allwinner's D1/T113s/R329/T507 SoCs have a new general purpose ADC.
This ADC is the same for all of this SoCs. The only difference is
the number of available channels.

Signed-off-by: Maxim Kiselev <bigunclemax@...il.com>
---
 .../iio/adc/allwinner,sun20i-d1-gpadc.yaml    | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml
new file mode 100644
index 000000000000..94f15bb48231
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/allwinner,sun20i-d1-gpadc.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/allwinner,sun20i-d1-gpadc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner D1 General Purpose ADC
+
+properties:
+  "#io-channel-cells":
+    const: 1
+
+  clocks:
+    maxItems: 1
+
+  compatible:
+    enum:
+      - allwinner,sun20i-d1-gpadc
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+required:
+  - "#io-channel-cells"
+  - clocks
+  - compatible
+  - interrupts
+  - reg
+  - resets
+
+patternProperties:
+  "^channel@([0-15])$":
+    $ref: adc.yaml
+    type: object
+    description: |
+      Represents the internal channels of the ADC.
+
+    properties:
+      reg:
+        description: |
+          The channel number.
+          Up to 16 channels, numbered from 0 to 15.
+        items:
+          minimum: 0
+          maximum: 15
+
+    required:
+      - reg
+
+    additionalProperties: false
+
+additionalProperties: false
+
+examples:
+  - |
+    gpadc: adc@...9000 {
+        compatible = "allwinner,sun20i-d1-gpadc";
+        reg = <0x2009000 0x1000>;
+        clocks = <&ccu 80>;
+        resets = <&ccu 32>;
+        interrupts = <0 57 4>;
+        #io-channel-cells = <1>;
+
+        channel@0 {
+          reg = <0>;
+        };
+
+        channel@1 {
+          reg = <1>;
+        };
+    };
+
+...
-- 
2.39.2