[PATCH v4 2/2] arm64: dts: broadcom: bcm2712-d-rpi-5-b: add compatible

[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 <gregor.herburger at linutronix.de>
---
 arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
index 127be0fc27c22..ae4b7c587dbc5 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-d-rpi-5-b.dts
@@ -3,6 +3,11 @@
 
 #include "bcm2712-rpi-5-b.dts"
 
+/ {
+	compatible = "raspberrypi,5-model-b-d0", "brcm,bcm2712-d0";
+	model = "Raspberry Pi 5 d0 Stepping";
+};
+
 &gio_aon {
 	brcm,gpio-bank-widths = <15 6>;
 

-- 
2.47.3