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dt-bindings: clock: fixed: Define a preferred node name

PATCH Applied Rob Herring (Arm) 3 participants 3 messages Apr 30, 2024 – May 4, 2024

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Rob Herring (Arm)

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#0 lore raw

PATCH v2 1/1 dt-bindings: clock: fixed: Define a preferred node name

Define "clock-<freq>" as the preferred node name for fixed-clock and fixed-factor-clock where <freq> is the output frequency of the clock. There isn't much of an existing pattern for names of these nodes. The most frequent patterns are a prefix or suffix of "clk", but there's a bunch that don't follow any sort of pattern. We could use "clock-controller-.*", but these nodes aren't really a controller in any way. So let's at least align with part of that and use 'clock-'.

For now this only serves as documentation as the schema still allows anything to avoid lots of additional warnings for something low priority to fix. Once a "no deprecated" mode is added to the tools, warnings can be enabled selectively.

---
 Documentation/devicetree/bindings/clock/fixed-clock.yaml | 9 +++++++++
 .../devicetree/bindings/clock/fixed-factor-clock.yaml    | 9 +++++++++
 2 files changed, 18 insertions(+)
Documentation/devicetree/bindings/clock/fixed-clock.yaml +9 -0
index b0a4fb8256e2..90fb10660684 100644
@@ -11,6 +11,15 @@ maintainers:
   - Stephen Boyd <[email protected]>
 
 properties:
+  $nodename:
+    anyOf:
+      - description:
+          Preferred name is 'clock-<freq>' with <freq> being the output
+          frequency as defined in the 'clock-frequency' property.
+        pattern: "^clock-([0-9]+|[a-z0-9-]+)$"
+      - description: Any name allowed
+        deprecated: true
+
   compatible:
     const: fixed-clock
 
Documentation/devicetree/bindings/clock/fixed-factor-clock.yaml +9 -0
index 8f71ab300470..4afdb1c98f5f 100644
@@ -11,6 +11,15 @@ maintainers:
   - Stephen Boyd <[email protected]>
 
 properties:
+  $nodename:
+    anyOf:
+      - description:
+          If the frequency is fixed, the preferred name is 'clock-<freq>' with
+          <freq> being the output frequency.
+        pattern: "^clock-([0-9]+|[0-9a-z-]+)$"
+      - description: Any name allowed
+        deprecated: true
+
   compatible:
     enum:
       - fixed-factor-clock
Signature · 1 line
2.43.0
Acked-by on v2 1/1
#1 lore raw
Quoted 8 lines · Rob Herring (Arm)

Define "clock-<freq>" as the preferred node name for fixed-clock and fixed-factor-clock where <freq> is the output frequency of the clock. There isn't much of an existing pattern for names of these nodes. The most frequent patterns are a prefix or suffix of "clk", but there's a bunch that don't follow any sort of pattern. We could use "clock-controller-.*", but these nodes aren't really a controller in any way. So let's at least align with part of that and use 'clock-'.

Quoted 6 lines

For now this only serves as documentation as the schema still allows anything to avoid lots of additional warnings for something low priority to fix. Once a "no deprecated" mode is added to the tools, warnings can be enabled selectively.

Cheers,
Conor.

maintainer Applied
#2 lore raw
In reply to Rob Herring (Arm)

Quoting Rob Herring (Arm) (2024-04-30 11:04:14)

Quoted 8 lines

Define "clock-<freq>" as the preferred node name for fixed-clock and fixed-factor-clock where <freq> is the output frequency of the clock. There isn't much of an existing pattern for names of these nodes. The most frequent patterns are a prefix or suffix of "clk", but there's a bunch that don't follow any sort of pattern. We could use "clock-controller-.*", but these nodes aren't really a controller in any way. So let's at least align with part of that and use 'clock-'.

Quoted 7 lines

For now this only serves as documentation as the schema still allows anything to avoid lots of additional warnings for something low priority to fix. Once a "no deprecated" mode is added to the tools, warnings can be enabled selectively.

---

Applied to clk-next