Re: [RFC PATCH 1/3] dt-bindings: arm64: bcmbca: Merge BCM4908 into BCMBCA

On 7/12/22 00:45, Krzysztof Kozlowski wrote:

On 12/07/2022 04:11, William Zhang wrote:

quoted

Merge BCM4908 SoC device tree description into BCMBCA and combined
all BCM4908 chip variants into the same BCM4908 chip family item.

Merge means you combine some entries, so I would expect to see the
removal here as well.

Will combine with the removal patch as you pointed out

quoted

Each compatible string represent the whole chip family. The board
variants and chip varints go into the first and second enum in the
compatible string item list.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
---

  .../bindings/arm/bcm/brcm,bcmbca.yaml           | 17 +++++++++++++++++
  1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml b/Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml
index d9dc4f22f4a5..906c3e1de372 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml

@@ -28,6 +28,23 @@ properties:
            - const: brcm,bcm47622
            - const: brcm,bcmbca
  
+      - description: BCM4908 Family based boards
+        items:
+          - enum:
+              # BCM4908 SoC based boards
+              - brcm,bcm94908
+              - asus,gt-ac5300
+              - netgear,raxe500
+              # BCM4906 SoC based boards
+              - brcm,bcm94906
+              - netgear,r8000p
+              - tplink,archer-c2300-v1
+          - enum:
+              - brcm,bcm4908
+              - brcm,bcm4906
+              - brcm,bcm49408

This is wrong.  brcm,bcm94908 followed by brcm,bcm4906 does not look
like valid list of compatibles.

For 4908 board variant, it will need to be followed by 4908 chip. Sorry 
for the basic question but is there any requirement to enforce this kind 
of rule?  I would assume dts writer know what he/she is doing and select 
the right combination.

quoted

+          - const: brcm,bcmbca
+
        - description: BCM4912 based boards
          items:
            - enum:

Best regards,
Krzysztof