The RaspberryPi firmware binding uses two compatible, include simple-bus.
The select statement generated by default will thus select any node that
has simple-bus, not all of them being the raspberrypi firmware node.

This results in warnings being wrongfully reported. Let's add a custom
select statement to fix that.

Fixes: 5bc0b9be8544 ("dt-bindings: arm: bcm: Convert BCM2835 firmware binding to YAML")
Signed-off-by: Maxime Ripard <redacted>

---

The original binding has been merged through the clock tree, so it should
be merged there.

Even though the original binding (and the DT) are using the simple-bus
compatible, this creates some DTC warnings since the firmware really isn't
a bus, so the node name doesn't match what a bus should have, none of the
children have a reg property, #address-cells and #size-cells are missing,
etc.

I can only guess that simple-bus was used to make the sub-devices probe,
but maybe simple-mfd would be more appropriate here?
---
 .../bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml   | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
index b48ed875eb8e..17e4f20c8d39 100644
--- a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-firmware.yaml

@@ -10,6 +10,15 @@ maintainers:
   - Eric Anholt <eric@anholt.net>
   - Stefan Wahren <wahrenst@gmx.net>
 
+select:
+  properties:
+    compatible:
+      contains:
+        const: raspberrypi,bcm2835-firmware
+
+  required:
+    - compatible
+
 properties:
   compatible:
     items:

-- 
2.26.2