linux-kernel - [PATCH v3 8/9] dt-bindings: auxdisplay: Add Maxim MAX6958/6959

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Message-ID: <20240219170337.2161754-9-andriy.shevchenko@linux.intel.com>
Date: Mon, 19 Feb 2024 18:58:07 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andy@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Robin van der Gracht <robin@...tonic.nl>,
	Paul Burton <paulburton@...nel.org>
Subject: [PATCH v3 8/9] dt-bindings: auxdisplay: Add Maxim MAX6958/6959

Add initial device tree documentation for Maxim MAX6958/6959.
As per reviewer's request mention the fact of absence reset and
power enable pins, since the hardware is quite simple.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/auxdisplay/maxim,max6959.yaml    | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/auxdisplay/maxim,max6959.yaml

diff --git a/Documentation/devicetree/bindings/auxdisplay/maxim,max6959.yaml b/Documentation/devicetree/bindings/auxdisplay/maxim,max6959.yaml
new file mode 100644
index 000000000000..6c78bb185348
--- /dev/null
+++ b/Documentation/devicetree/bindings/auxdisplay/maxim,max6959.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/auxdisplay/maxim,max6959.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MAX6958/6959 7-segment LED display controller
+
+maintainers:
+  - Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
+
+description:
+  The Maxim MAX6958/6959 7-segment LED display controller provides
+  an I2C interface to up to four 7-segment LED digits. The MAX6959,
+  in comparison to MAX6958, adds input support. Type of the chip can
+  be autodetected via specific register read, and hence the features
+  may be enabled in the driver at run-time, in case they are requested
+  via Device Tree. A given hardware is simple and does not provide
+  any additional pins, such as reset or enable.
+
+properties:
+  compatible:
+    const: maxim,max6959
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        display-controller@38 {
+            compatible = "maxim,max6959";
+            reg = <0x38>;
+        };
+    };
-- 
2.43.0.rc1.1.gbec44491f096