linux-kernel - Re: [PATCH v5 4/5] ARM: dts: microchip: sam9x7: Add GFX2D GPU

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Message-ID: <d4d76895-9029-4913-8873-e9a41852f677@microchip.com>
Date: Tue, 13 Jan 2026 15:59:47 +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>
Subject: Re: [PATCH v5 4/5] ARM: dts: microchip: sam9x7: Add GFX2D GPU

Hi,

On 13/01/2026 at 14:10, Cyrille Pitchen wrote:
> Add support for the GFX2D GPU.
> 
> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...rochip.com>
> ---
>   arch/arm/boot/dts/microchip/sam9x7.dtsi | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/microchip/sam9x7.dtsi b/arch/arm/boot/dts/microchip/sam9x7.dtsi
> index 46dacbbd201ddb68a7456d6fe1afafa59db90ec8..79a82962264f51c4c243530b9dad9010f8cf1347 100644
> --- a/arch/arm/boot/dts/microchip/sam9x7.dtsi
> +++ b/arch/arm/boot/dts/microchip/sam9x7.dtsi
> @@ -292,6 +292,14 @@ AT91_XDMAC_DT_PERID(26))>,
>   			status = "disabled";
>   		};
>   
> +		gpu: gpu@...18000 {
> +			compatible = "microchip,sam9x7-gfx2d";
> +			reg = <0xf0018000 0x4000>;

I see that the register map is much smaller that this 0x4000 size required.

> +			interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
> +			clocks = <&pmc PMC_TYPE_PERIPHERAL 36>;
> +			status = "disabled";
> +		};
> +
>   		i2s: i2s@...1c000 {
>   			compatible = "microchip,sam9x7-i2smcc", "microchip,sam9x60-i2smcc";
>   			reg = <0xf001c000 0x100>;
> 

Best regards,
   Nicolas