[PATCH] dt-bindings: gpio: Convert maxim,max3191x to DT schema

[PATCH] dt-bindings: gpio: Convert maxim,max3191x to DT schema

[Rob Herring (Arm)]

Convert the Maxim MAX3191x and similar GPIO binding to DT schema format.
It's a straight forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../bindings/gpio/gpio-max3191x.txt           |  59 ----------
 .../bindings/gpio/maxim,max31910.yaml         | 104 ++++++++++++++++++
 2 files changed, 104 insertions(+), 59 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-max3191x.txt
 create mode 100644 Documentation/devicetree/bindings/gpio/maxim,max31910.yaml

diff --git a/Documentation/devicetree/bindings/gpio/gpio-max3191x.txt b/Documentation/devicetree/bindings/gpio/gpio-max3191x.txt
deleted file mode 100644
index b3a6444b8f45..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-max3191x.txt
+++ /dev/null
@@ -1,59 +0,0 @@
-GPIO driver for Maxim MAX3191x industrial serializer
-
-Required properties:
- - compatible:		Must be one of:
-			"maxim,max31910"
-			"maxim,max31911"
-			"maxim,max31912"
-			"maxim,max31913"
-			"maxim,max31953"
-			"maxim,max31963"
- - reg: 		Chip select number.
- - gpio-controller:	Marks the device node as a GPIO controller.
- - #gpio-cells: 	Should be two. For consumer use see gpio.txt.
-
-Optional properties:
- - #daisy-chained-devices:
-			Number of chips in the daisy-chain (default is 1).
- - maxim,modesel-gpios: GPIO pins to configure modesel of each chip.
-			The number of GPIOs must equal "#daisy-chained-devices"
-			(if each chip is driven by a separate pin) or 1
-			(if all chips are wired to the same pin).
- - maxim,fault-gpios: 	GPIO pins to read fault of each chip.
-			The number of GPIOs must equal "#daisy-chained-devices"
-			or 1.
- - maxim,db0-gpios:	GPIO pins to configure debounce of each chip.
-			The number of GPIOs must equal "#daisy-chained-devices"
-			or 1.
- - maxim,db1-gpios:	GPIO pins to configure debounce of each chip.
-			The number of GPIOs must equal "maxim,db0-gpios".
- - maxim,modesel-8bit:	Boolean whether the modesel pin of the chips is
-			pulled high (8-bit mode).  Use this if the modesel pin
-			is hardwired and consequently "maxim,modesel-gpios"
-			cannot be specified.  By default if neither this nor
-			"maxim,modesel-gpios" is given, the driver assumes
-			that modesel is pulled low (16-bit mode).
- - maxim,ignore-undervoltage:
-			Boolean whether to ignore undervoltage alarms signaled
-			by the "maxim,fault-gpios" or by the status byte
-			(in 16-bit mode).  Use this if the chips are powered
-			through 5VOUT instead of VCC24V, in which case they
-			will constantly signal undervoltage.
-
-For other required and optional properties of SPI slave nodes please refer to
-../spi/spi-bus.txt.
-
-Example:
-	gpio@0 {
-		compatible = "maxim,max31913";
-		reg = <0>;
-		gpio-controller;
-		#gpio-cells = <2>;
-
-		maxim,modesel-gpios = <&gpio2 23>;
-		maxim,fault-gpios   = <&gpio2 24 GPIO_ACTIVE_LOW>;
-		maxim,db0-gpios     = <&gpio2 25>;
-		maxim,db1-gpios     = <&gpio2 26>;
-
-		spi-max-frequency = <25000000>;
-	};
diff --git a/Documentation/devicetree/bindings/gpio/maxim,max31910.yaml b/Documentation/devicetree/bindings/gpio/maxim,max31910.yaml
new file mode 100644
index 000000000000..82a190a715f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/maxim,max31910.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/maxim,max31910.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX3191x GPIO serializer
+
+maintainers:
+  - Lukas Wunner <lukas@wunner.de>
+
+properties:
+  compatible:
+    enum:
+      - maxim,max31910
+      - maxim,max31911
+      - maxim,max31912
+      - maxim,max31913
+      - maxim,max31953
+      - maxim,max31963
+
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+  '#daisy-chained-devices':
+    description: Number of chips in the daisy-chain.
+    default: 1
+
+  maxim,modesel-gpios:
+    description:
+      GPIO pins to configure modesel of each chip. The number of GPIOs must
+      equal "#daisy-chained-devices" (if each chip is driven by a separate pin)
+      or 1 (if all chips are wired to the same pin).
+
+  maxim,fault-gpios:
+    description:
+      GPIO pins to read fault of each chip. The number of GPIOs must equal
+      "#daisy-chained-devices" or 1.
+
+  maxim,db0-gpios:
+    description:
+      GPIO pins to configure debounce of each chip. The number of GPIOs must
+      equal "#daisy-chained-devices" or 1.
+
+  maxim,db1-gpios:
+    description:
+      GPIO pins to configure debounce of each chip. The number of GPIOs must
+      equal "maxim,db0-gpios".
+
+  maxim,modesel-8bit:
+    description:
+      Boolean whether the modesel pin of the chips is pulled high (8-bit mode).
+      Use this if the modesel pin is hardwired and consequently
+      "maxim,modesel-gpios" cannot be specified. By default if neither this nor
+      "maxim,modesel-gpios" is given, the driver assumes that modesel is pulled
+      low (16-bit mode).
+    type: boolean
+
+  maxim,ignore-undervoltage:
+    description:
+      Boolean whether to ignore undervoltage alarms signaled by the
+      "maxim,fault-gpios" or by the status byte (in 16-bit mode). Use this if
+      the chips are powered through 5VOUT instead of VCC24V, in which case they
+      will constantly signal undervoltage.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - '#gpio-cells'
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        gpio@0 {
+            compatible = "maxim,max31913";
+            reg = <0>;
+            gpio-controller;
+            #gpio-cells = <2>;
+
+            maxim,modesel-gpios = <&gpio2 23>;
+            maxim,fault-gpios   = <&gpio2 24 GPIO_ACTIVE_LOW>;
+            maxim,db0-gpios     = <&gpio2 25>;
+            maxim,db1-gpios     = <&gpio2 26>;
+
+            spi-max-frequency = <25000000>;
+        };
+    };
-- 
2.47.2

Re: [PATCH] dt-bindings: gpio: Convert maxim,max3191x to DT schema

[Lukas Wunner]

On Mon, Jul 14, 2025 at 03:28:41PM -0500, Rob Herring (Arm) wrote:
> Convert the Maxim MAX3191x and similar GPIO binding to DT schema format.
> It's a straight forward conversion.
> 
> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Reviewed-by: Lukas Wunner <lukas@wunner.de>

Re: [PATCH] dt-bindings: gpio: Convert maxim,max3191x to DT schema

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>


On Mon, 14 Jul 2025 15:28:41 -0500, Rob Herring (Arm) wrote:
> Convert the Maxim MAX3191x and similar GPIO binding to DT schema format.
> It's a straight forward conversion.
> 
> 

Applied, thanks!

[1/1] dt-bindings: gpio: Convert maxim,max3191x to DT schema
      https://git.kernel.org/brgl/linux/c/696d8332e591b11e438c4bc17528fc79255f4266

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>