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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Gregor Herburger <gregor.herburger@linutronix.de>
Cc: Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	 Florian Fainelli <florian.fainelli@broadcom.com>,
	 Broadcom internal kernel review list
	<bcm-kernel-feedback-list@broadcom.com>,
	Ray Jui <rjui@broadcom.com>,
	 Scott Branden <sbranden@broadcom.com>,
	Eric Anholt <eric@anholt.net>, Stefan Wahren <wahrenst@gmx.net>,
	 Dave Stevenson <dave.stevenson@raspberrypi.com>,
	devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 2/2] arm64: dts: broadcom: bcm2712-d-rpi-5-b: add compatible
Date: Tue, 11 Aug 2026 09:58:03 +0200	[thread overview]
Message-ID: <20260811-celestial-discerning-scallop-beeba3@quoll> (raw)
In-Reply-To: <20260810-bcm2712-d-stepping-compatible-v4-2-73f74479539c@linutronix.de>

On Mon, Aug 10, 2026 at 01:46:34PM +0200, Gregor Herburger wrote:
> The bcm2712 found on the Raspberry Pi 5 is available in the d Stepping
> and in a c Stepping. There are two separate dts files. The
> bcm2712-rpi-5-b.dts for the c Stepping and the bcm2712-d-rpi-5-b.dts for
> the d Stepping. The d stepping does not set its own compatible/model
> string but uses "raspberrypi,5-model-b" through its include.
> 
> These two steppings are not compatible. Booting with the wrong dtb file
> causes a crash at boot.
> 
> Add a compatibles string "raspberrypi,5-model-b-d0" together with a
> "bcm2712-d0" string to allow us to distinguish between those two
> steppings.
> 
> Fixes: 44839e2ac8ec ("arm64: dts: broadcom: Add DT for D-step version of BCM2712")
> Signed-off-by: Gregor Herburger <gregor.herburger@linutronix.de>
> ---
>  arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts | 5 +++++
>  1 file changed, 5 insertions(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof


      parent reply	other threads:[~2026-08-11  7:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-10 11:46 [PATCH v4 0/2] arm64: dts: broadcom: bcm2712-d-rpi-5-b: add compatible Gregor Herburger
2026-08-10 11:46 ` [PATCH v4 1/2] dt-bindings: arm: bcm2835: Add 2712-d0 Stepping Gregor Herburger
2026-08-10 16:03   ` Stefan Wahren
2026-08-11  7:57   ` Krzysztof Kozlowski
2026-08-10 11:46 ` [PATCH v4 2/2] arm64: dts: broadcom: bcm2712-d-rpi-5-b: add compatible Gregor Herburger
2026-08-10 16:04   ` Stefan Wahren
2026-08-11  7:58   ` Krzysztof Kozlowski [this message]

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