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Message-Id: <20241223-mdb-max7360-support-v2-1-37a8d22c36ed@bootlin.com>
Date: Mon, 23 Dec 2024 17:42:33 +0100
From: Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
To: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Kamel Bouhara <kamel.bouhara@...tlin.com>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Uwe Kleine-König <ukleinek@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-input@...r.kernel.org,
linux-pwm@...r.kernel.org,
Grégory Clement <gregory.clement@...tlin.com>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
Subject: [PATCH v2 1/7] dt-bindings: mfd: gpio: Add MAX7360
Add device tree bindings for Maxim Integrated MAX7360 device with
support for keypad, rotary, gpios and pwm functionalities.
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
---
.../bindings/gpio/maxim,max7360-gpio.yaml | 80 +++++++++++++++
.../devicetree/bindings/mfd/maxim,max7360.yaml | 107 +++++++++++++++++++++
2 files changed, 187 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml b/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml
new file mode 100644
index 000000000000..6e6133ce6e68
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/maxim,max7360-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX7360 GPIO controller
+
+maintainers:
+ - Kamel Bouhara <kamel.bouhara@...tlin.com>
+ - Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
+
+description: |
+ Maxim MAX7360 GPIO controller, in MAX7360 chipset
+ https://www.analog.com/en/products/max7360.html
+
+properties:
+ compatible:
+ enum:
+ - maxim,max7360-gpio
+ - maxim,max7360-gpo
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+
+ ngpios:
+ minimum: 0
+ maximum: 8
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ maxim,constant-current-disable:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Bit field, each bit disables constant-current output of the associated
+ GPIO, starting from the least significant bit for the first GPIO.
+
+
+required:
+ - compatible
+ - gpio-controller
+ - ngpios
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - maxim,max7360-gpio
+then:
+ required:
+ - interrupt-controller
+else:
+ properties:
+ interrupt-controller: false
+ maxim,constant-current-disable: false
+
+ ngpios:
+ maximum: 6
+
+additionalProperties: false
+
+examples:
+ - |
+ gpio {
+ compatible = "maxim,max7360-gpio";
+
+ gpio-controller;
+ #gpio-cells = <0x2>;
+ ngpios = <8>;
+ maxim,constant-current-disable = <0x06>;
+
+ interrupt-controller;
+ #interrupt-cells = <0x2>;
+ };
diff --git a/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml
new file mode 100644
index 000000000000..1f761707070a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/maxim,max7360.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX7360 Keypad, Rotary encoder, PWM and GPIO controller
+
+maintainers:
+ - Kamel Bouhara <kamel.bouhara@...tlin.com>
+ - Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>
+
+description: |
+ Maxim MAX7360 device, with following functions:
+ - keypad controller
+ - rotary controller
+ - GPIO and GPO controller
+ - PWM controller
+
+ https://www.analog.com/en/products/max7360.html
+
+allOf:
+ - $ref: /schemas/input/matrix-keymap.yaml#
+ - $ref: /schemas/input/input.yaml#
+
+properties:
+ compatible:
+ enum:
+ - maxim,max7360
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ minItems: 2
+ maxItems: 2
+
+ interrupt-names:
+ items:
+ - const: inti
+ - const: intk
+
+ keypad-debounce-delay-ms:
+ description: Keypad debounce delay in ms
+ minimum: 9
+ maximum: 40
+ default: 9
+
+ autorepeat: true
+
+ rotary-debounce-delay-ms:
+ description: Rotary encoder debounce delay in ms
+ minimum: 0
+ maximum: 15
+ default: 0
+
+ linux,axis:
+ description: The input subsystem axis to map to this rotary encoder.
+
+ "#pwm-cells":
+ const: 3
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-names
+ - linux,keymap
+ - linux,axis
+ - "#pwm-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/input/input.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ io-expander@38 {
+ compatible = "maxim,max7360";
+ reg = <0x38>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <23 IRQ_TYPE_LEVEL_LOW>,
+ <24 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-names = "inti", "intk";
+
+ keypad,num-rows = <8>;
+ keypad,num-columns = <4>;
+ linux,keymap = <
+ MATRIX_KEY(0x00, 0x00, KEY_F5)
+ MATRIX_KEY(0x01, 0x00, KEY_F4)
+ MATRIX_KEY(0x02, 0x01, KEY_F6)
+ >;
+ keypad-debounce-delay-ms = <10>;
+ autorepeat;
+
+ rotary-debounce-delay-ms = <2>;
+ linux,axis = <0>; /* REL_X */
+
+ #pwm-cells = <3>;
+ };
+ };
--
2.39.5
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