Re: [PATCH net-next 1/6] dt-bindings: net: Brcm ASP 2.0 Ethernet controller

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On 4/24/23 11:14, Justin Chen wrote:
On Fri, Apr 21, 2023 at 12:29 AM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:

On 19/04/2023 02:10, Justin Chen wrote:
From: Florian Fainelli <f.fainelli@xxxxxxxxx>

Add a binding document for the Broadcom ASP 2.0 Ethernet
controller.

Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Justin Chen <justinpopo6@xxxxxxxxx>
---
  .../devicetree/bindings/net/brcm,asp-v2.0.yaml     | 146 +++++++++++++++++++++
  1 file changed, 146 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml

diff --git a/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml b/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml
new file mode 100644
index 000000000000..3817d722244f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml
@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/net/brcm,asp-v2.0.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";

Drop quotes.

+
+title: Broadcom ASP 2.0 Ethernet controller
+
+maintainers:
+  - Justin Chen <justinpopo6@xxxxxxxxx>
+  - Florian Fainelli <f.fainelli@xxxxxxxxx>
+
+description: Broadcom Ethernet controller first introduced with 72165
+
+properties:
+  '#address-cells':
+    const: 1
+  '#size-cells':
+    const: 1
+
+  compatible:
+    enum:
+      - brcm,bcm72165-asp-v2.0
+      - brcm,asp-v2.0
+      - brcm,asp-v2.1

Is this part of SoC? If so, then SoC compatibles are preferred, not IP
block versions.
We have the same IP on different chips. So no, it isn't tied to a specific SoC.


+
+  reg:
+    maxItems: 1
+    description: ASP registers

Drop description.

+
+  ranges: true
+
+  interrupts:
+    minItems: 1
+    items:
+      - description: RX/TX interrupt
+      - description: Port 0 Wake-on-LAN
+      - description: Port 1 Wake-on-LAN
+
+  clocks:
+    $ref: /schemas/types.yaml#/definitions/phandle-array

Drop.

+    description: Phandle to clock controller

Drop.

Instead maxItems.

+
+  clock-names:
+    const: sw_asp

Drop entire property.

+
+  ethernet-ports:
+    type: object
+    properties:
+      '#address-cells':
+        const: 1
+      '#size-cells':
+        const: 0

Missing additionalProperties:false. Look at existing bindings how it is
done.

+
+    patternProperties:
+      "^port@[0-9]+$":
+        type: object
+
+        $ref: ethernet-controller.yaml#
+
+        properties:
+          reg:
+            maxItems: 1
+            description: Port number
+
+          channel:
+            maxItems: 1
+            description: ASP channel number
+
+        required:
+          - reg
+          - channel
+
+patternProperties:
+  "^mdio@[0-9a-f]+$":
+    type: object
+    $ref: "brcm,unimac-mdio.yaml"
+
+    description:
+      ASP internal UniMAC MDIO bus
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    asp@9c00000 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

+        compatible = "brcm,asp-v2.0";
+        reg = <0x9c00000 0x1fff14>;
+        interrupts = <0x0 0x33 0x4>;

Use proper defines for flags.
Not understanding this comment. Can you elaborate?

I believe Krzysztof would prefer that you use:

	interrupts = <GIC_SPI 0x33 IRQ_TYPE_LEVEL_HIGH>

here, which would require using defined from include/dt-bindings/interrupt-controller/{arm-gic.h,irq.h}
--
Florian




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