linux-kernel - [PATCH v3 1/2] media: dt-bindings: i2c: add Himax HM1246 image sensor

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Message-Id: <20250912-hm1246-v3-1-3b89f47dfa43@emfend.at>
Date: Fri, 12 Sep 2025 09:37:06 +0200
From: Matthias Fend <matthias.fend@...end.at>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Hans Verkuil <hverkuil@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Hans de Goede <hansg@...nel.org>, Ricardo Ribalda <ribalda@...omium.org>, 
 André Apitzsch <git@...tzsch.eu>, 
 Tarang Raval <tarang.raval@...iconsignals.io>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, 
 Benjamin Mugnier <benjamin.mugnier@...s.st.com>, 
 Sylvain Petinot <sylvain.petinot@...s.st.com>, 
 Dongcheng Yan <dongcheng.yan@...el.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Alan Stern <stern@...land.harvard.edu>, 
 Jingjing Xiong <jingjing.xiong@...el.com>, 
 Heimir Thor Sverrisson <heimir.sverrisson@...il.com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Hao Yao <hao.yao@...el.com>, 
 Matthias Fend <matthias.fend@...end.at>, 
 bsp-development.geo@...ca-geosystems.com
Subject: [PATCH v3 1/2] media: dt-bindings: i2c: add Himax HM1246 image
 sensor

Add YAML device tree binding for Himax HM1246 image sensor.

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Matthias Fend <matthias.fend@...end.at>
---
 .../bindings/media/i2c/himax,hm1246.yaml           | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/himax,hm1246.yaml b/Documentation/devicetree/bindings/media/i2c/himax,hm1246.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..90c9839fdcfd81eb208bfe5716c957c315081067
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/himax,hm1246.yaml
@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2025 Matthias Fend <matthias.fend@...end.at>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/himax,hm1246.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Himax HM1246-AWD 1/3.7-Inch megapixel SoC image sensor
+
+maintainers:
+  - Matthias Fend <matthias.fend@...end.at>
+
+description:
+  The Himax HM1246-AWD is a 1/3.7-Inch CMOS image sensor SoC with an active
+  array size of 1296 x 976. It is programmable through an I2C interface and
+  connected via parallel bus.
+
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+properties:
+  compatible:
+    const: himax,hm1246
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description: Input reference clock (6 - 27 MHz)
+    maxItems: 1
+
+  reset-gpios:
+    description: Active low XSHUTDOWN pin
+    maxItems: 1
+
+  avdd-supply:
+    description: Power for analog circuit (3.0 - 3.6 V)
+
+  iovdd-supply:
+    description: Power for I/O circuit (1.7 - 3.6 V)
+
+  dvdd-supply:
+    description: Power for digital circuit (1.5 / 1.8 V)
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    additionalProperties: false
+    description: Parallel video output port
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          hsync-active:
+            default: 1
+
+          vsync-active:
+            default: 1
+
+          pclk-sample:
+            default: 0
+
+    required:
+      - endpoint
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - avdd-supply
+  - iovdd-supply
+  - dvdd-supply
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/media/video-interfaces.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        sensor@24 {
+            compatible =  "himax,hm1246";
+            reg = <0x24>;
+
+            clocks = <&hm1246_clk>;
+
+            reset-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+
+            avdd-supply = <&hm1246_avdd>;
+            iovdd-supply = <&hm1246_iovdd>;
+            dvdd-supply = <&hm1246_dvdd>;
+
+            orientation = <2>;
+            rotation = <0>;
+
+            port {
+                endpoint {
+                    remote-endpoint = <&isp_par_in>;
+                    bus-width = <10>;
+                    hsync-active = <1>; /* active high */
+                    vsync-active = <1>; /* active high */
+                    pclk-sample = <1>; /* sample on rising edge */
+                };
+            };
+        };
+    };

-- 
2.34.1