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Thunderbird Subject: Re: [PATCH v4 2/2] arm64: dts: broadcom: bcm2712-d-rpi-5-b: add compatible To: Gregor Herburger , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Broadcom internal kernel review list , Ray Jui , Scott Branden , Eric Anholt , Dave Stevenson Cc: devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260810-bcm2712-d-stepping-compatible-v4-0-73f74479539c@linutronix.de> <20260810-bcm2712-d-stepping-compatible-v4-2-73f74479539c@linutronix.de> Content-Language: en-US From: Stefan Wahren Autocrypt: addr=wahrenst@gmx.net; keydata= xjMEZ1dOJBYJKwYBBAHaRw8BAQdA7H2MMG3q8FV7kAPko5vOAeaa4UA1I0hMgga1j5iYTTvN IFN0ZWZhbiBXYWhyZW4gPHdhaHJlbnN0QGdteC5uZXQ+wo8EExYIADcWIQT3FXg+ApsOhPDN NNFuwvLLwiAwigUCZ1dOJAUJB4TOAAIbAwQLCQgHBRUICQoLBRYCAwEAAAoJEG7C8svCIDCK JQ4BAP4Y9uuHAxbAhHSQf6UZ+hl5BDznsZVBJvH8cZe2dSZ6AQCNgoc1Lxw1tvPscuC1Jd1C 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oovjOaNcRFWv5FJYRNRn8kxrdD4+i90+3flXlHik6Wsyq9wBNa4FAk0Uo0QSpt95NdpBa2fnx xE6jd6cG75JpJ8a7+QuIlCnwPKU1X3/h9e2U6x2VOvGgKYwPqANnz3pL0HuLag5gQqD6aqrUQ hvTXluEvjx15PJEM/BzlYJOXUAn68EnOWN2Hv30zkd2DQwPdefINFjcGgOWlOxl1lbKIqKXBp m0IFMqLPGabIcTiOy8RPKV5HKHxymm3e1/pCwiIkqyGuSPWg4q4+soHu/KZutf/JUmmY3dfNm EVuLL2WdKxeo68JN+myHXNVbweiHDPygmb4/7tx8t8xvOim1N Am 10.08.26 um 13:46 schrieb Gregor Herburger: > 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 > --- Reviewed-by: Stefan Wahren