[PATCH 3/5] dt-bindings: mfd: sensehat: Add Raspberry Pi Sense HAT schema

[Matthias Brugger]

On 23/08/2022 19:41, Charles Mirabile wrote:
> This patch adds the device tree bindings for the Sense HAT
> and each of its children devices in yaml form.
> 
> Co-developed-by: Joel Savitz <jsavitz at redhat.com>
> Signed-off-by: Joel Savitz <jsavitz at redhat.com>
> Signed-off-by: Charles Mirabile <cmirabil at redhat.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>

When doing a v11, maybe decide if you want to split this patch up. This way 
every maintainer (MFD, auxdisplay, input) can take his part of the binding 
description through his tree. Otherwise you will need Acked-by tags from them 
and one maintainer to volunteer, maybe provide a stable tag... Having it split 
up seems easier to me.

Regards,
Matthias

> ---
>   .../raspberrypi,sensehat-display.yaml         | 26 +++++++++
>   .../input/raspberrypi,sensehat-joystick.yaml  | 31 ++++++++++
>   .../bindings/mfd/raspberrypi,sensehat.yaml    | 57 +++++++++++++++++++
>   3 files changed, 114 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-display.yaml
>   create mode 100644 Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.yaml
>   create mode 100644 Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml
> 
> diff --git a/Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-display.yaml b/Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-display.yaml
> new file mode 100644
> index 000000000000..0cf59b0a519c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/auxdisplay/raspberrypi,sensehat-display.yaml
> @@ -0,0 +1,26 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/auxdisplay/raspberrypi,sensehat-display.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Raspberry Pi Sensehat Display
> +
> +maintainers:
> +  - Charles Mirabile <cmirabil at redhat.com>
> +  - Joel Savitz <jsavitz at redhat.com>
> +
> +description:
> +  This device is part of the sensehat multi function device.
> +  For more information see ../mfd/raspberrypi,sensehat.yaml.
> +
> +  This device features a programmable 8x8 RGB LED matrix.
> +
> +properties:
> +  compatible:
> +    const: raspberrypi,sensehat-display
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> diff --git a/Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.yaml b/Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.yaml
> new file mode 100644
> index 000000000000..98b03878a570
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/raspberrypi,sensehat-joystick.yaml
> @@ -0,0 +1,31 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/raspberrypi,sensehat-joystick.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Raspberry Pi Sensehat Joystick
> +
> +maintainers:
> +  - Charles Mirabile <cmirabil at redhat.com>
> +  - Joel Savitz <jsavitz at redhat.com>
> +
> +description:
> +  This device is part of the sensehat multi function device.
> +  For more information see ../mfd/raspberrypi,sensehat.yaml.
> +
> +  This device features a five button joystick (up, down,left,
> +  right, click)
> +
> +properties:
> +  compatible:
> +    const: raspberrypi,sensehat-joystick
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - interrupts
> +
> +additionalProperties: false
> diff --git a/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml b/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml
> new file mode 100644
> index 000000000000..bc53834fbaa7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/raspberrypi,sensehat.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/raspberrypi,sensehat.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Raspberry Pi Sensehat
> +
> +maintainers:
> +  - Charles Mirabile <cmirabil at redhat.com>
> +  - Joel Savitz <jsavitz at redhat.com>
> +
> +description:
> +  The Raspberry Pi Sensehat is an addon board originally developed
> +  for the Raspberry Pi that has a joystick and an 8x8 RGB LED display
> +  as well as several environmental sensors. It connects via i2c and
> +  a gpio for irq.
> +
> +properties:
> +  compatible:
> +    const: raspberrypi,sensehat
> +
> +  reg:
> +    maxItems: 1
> +
> +  joystick:
> +    $ref: /schemas/input/raspberrypi,sensehat-joystick.yaml#
> +
> +  display:
> +    $ref: /schemas/auxdisplay/raspberrypi,sensehat-display.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +  - joystick
> +  - display
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      hat at 46 {
> +        compatible = "raspberrypi,sensehat";
> +        reg = <0x46>;
> +        display {
> +          compatible = "raspberrypi,sensehat-display";
> +        };
> +        joystick {
> +          compatible = "raspberrypi,sensehat-joystick";
> +          interrupts = <23 IRQ_TYPE_EDGE_RISING>;
> +        };
> +      };
> +    };