linux-kernel - [PATCH v3 02/11] dt-bindings: i2c: apple,i2c: Add power-domains property

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Date:   Wed, 24 Nov 2021 16:34:12 +0900
From:   Hector Martin <marcan@...can.st>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     Hector Martin <marcan@...can.st>, Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Arnd Bergmann <arnd@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Kettenis <mark.kettenis@...all.nl>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Johan Hovold <johan@...nel.org>, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-serial@...r.kernel.org
Subject: [PATCH v3 02/11] dt-bindings: i2c: apple,i2c: Add power-domains property

This will bind to the PMGR pwrstate nodes that control power/clock
gating to SoC blocks. The i2c driver doesn't do runtime-pm yet, so
initially this will just keep the domain on permanently.

Signed-off-by: Hector Martin <marcan@...can.st>
---
 Documentation/devicetree/bindings/i2c/apple,i2c.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
index 22fc8483256f..be2bfbddfa36 100644
--- a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml
@@ -40,6 +40,9 @@ properties:
       used. This frequency is generated by dividing the reference clock.
       Allowed values are between ref_clk/(16*4) and ref_clk/(16*255).
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.33.0