linux-kernel - Re: [PATCH v5 1/5] dt-bindings: gpu: add bindings for the Microchip GFX2D GPU

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Message-ID: <ac304080-5d9a-4324-bfe9-e2a9da1c7d3f@microchip.com>
Date: Tue, 13 Jan 2026 16:08:59 +0100
From: Nicolas Ferre <nicolas.ferre@...rochip.com>
To: Cyrille Pitchen <cyrille.pitchen@...rochip.com>, David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>, Claudiu Beznea
	<claudiu.beznea@...on.dev>, Russell King <linux@...linux.org.uk>
CC: <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	"Conor Dooley" <conor.dooley@...rochip.com>
Subject: Re: [PATCH v5 1/5] dt-bindings: gpu: add bindings for the Microchip
 GFX2D GPU

On 13/01/2026 at 14:10, Cyrille Pitchen wrote:
> The Microchip GFX2D GPU is embedded in the SAM9X60 and SAM9X7 SoC family.
> Describe how the GFX2D GPU is integrated in these SoCs, including
> register space, interrupt and clock.
> 
> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...rochip.com>
> Acked-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>   .../bindings/gpu/microchip,sam9x60-gfx2d.yaml      | 46 ++++++++++++++++++++++
>   1 file changed, 46 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/microchip,sam9x60-gfx2d.yaml b/Documentation/devicetree/bindings/gpu/microchip,sam9x60-gfx2d.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..0f223ddda694e7edbc9f25c68d17ef01897a55a1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpu/microchip,sam9x60-gfx2d.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpu/microchip,sam9x60-gfx2d.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip GFX2D GPU
> +
> +maintainers:
> +  - Cyrille Pitchen <cyrille.pitchen@...rochip.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - microchip,sam9x60-gfx2d
> +      - microchip,sam9x7-gfx2d
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/clock/at91.h>
> +    gpu@...18000 {
> +      compatible = "microchip,sam9x60-gfx2d";
> +      reg = <0xf0018000 0x4000>;

Nit: maybe lower the register map size.
But not blocking:
Reviewed-by: Nicolas Ferre <nicolas.ferre@...rochip.com>

> +      interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
> +      clocks = <&pmc PMC_TYPE_PERIPHERAL 36>;
> +    };
> +
> +...
>