linux-kernel - [PATCH v2 02/13] dt-bindings: soc: mediatek: dvfsrc: Document clock

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Message-Id: <20251124-mt8196-dvfsrc-v2-2-d9c1334db9f3@collabora.com>
Date: Mon, 24 Nov 2025 12:06:51 +0100
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Henry Chen <henryc.chen@...iatek.com>, Georgi Djakov <djakov@...nel.org>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, linux-pm@...r.kernel.org, 
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: [PATCH v2 02/13] dt-bindings: soc: mediatek: dvfsrc: Document
 clock

The DVFSRC hardware has a clock on all platforms.

Instead or proliferating the culture of omitting clock descriptions in
the clock controller drivers or marking them critical instead of
declaring these types of relationships, add this one to the binding.

Any device that wishes to use this binding should figure out their
incomplete or incorrect clock situation first before piling more
features on top.

Acked-by: Rob Herring (Arm) <robh@...nel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
---
 .../devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
index 5673d242afcb..d5c42f992a21 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
@@ -35,6 +35,10 @@ properties:
     maxItems: 1
     description: DVFSRC common register address and length.
 
+  clocks:
+    items:
+      - description: Clock that drives the DVFSRC MCU
+
   regulators:
     type: object
     $ref: /schemas/regulator/mediatek,mt6873-dvfsrc-regulator.yaml#
@@ -51,6 +55,7 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/clock/mt8195-clk.h>
     soc {
         #address-cells = <2>;
         #size-cells = <2>;
@@ -58,6 +63,7 @@ examples:
         system-controller@...12000 {
             compatible = "mediatek,mt8195-dvfsrc";
             reg = <0 0x10012000 0 0x1000>;
+            clocks = <&topckgen CLK_TOP_DVFSRC>;
 
             regulators {
                 compatible = "mediatek,mt8195-dvfsrc-regulator";

-- 
2.52.0