linux-kernel - [PATCH 7/9] dt-bindings: i2c: i2c-rk3x: Allow use of a power-domain

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Message-ID: <20250518220707.669515-8-jonas@kwiboo.se>
Date: Sun, 18 May 2025 22:06:54 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Heiko Stuebner <heiko@...ech.de>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Andi Shyti <andi.shyti@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Yao Zi <ziyao@...root.org>,
	Chukun Pan <amadeus@....edu.cn>,
	linux-rockchip@...ts.infradead.org,
	linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Jonas Karlman <jonas@...boo.se>,
	linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 7/9] dt-bindings: i2c: i2c-rk3x: Allow use of a power-domain

The I2C controllers in most Rockchip SoCs are part or power domains that
are always powered on, i.e. PD_BUS or PD_PMU.

On RK3528 the I2C controllers are spread out among the PD_RKVENC, PD_VO
and PD_VPU power domains.

Add support to describe power-domains for the I2C controllers.

Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
 Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml b/Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml
index 2f1e97969c3f..4ac5a40a3886 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-rk3x.yaml
@@ -105,6 +105,9 @@ properties:
       (t(f) in the I2C specification). If not specified we will use the SCL
       value since they are the same in nearly all cases.
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.49.0