From f8fd855d5b2b4eb16ddaa67443f47e7931ba47d5 Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Wed, 23 Jul 2025 08:56:44 +0000 Subject: [PATCH] dt-bindings: i2c: i2c-rk3x: Allow use of a power-domain The I2C controllers in most Rockchip SoCs are part of power domains that are always powered on, i.e. PD_BUS or PD_PMU. These always powered on power domains have typically not been described in the device tree. Because these power domains have been left out of the device tree there has not been any real need to properly describe the I2C controllers power domain. On RK3528 the I2C controllers are spread out among the described PD_RKVENC, PD_VO and PD_VPU power domains. However, one I2C controller belong to an undescribed always powered on power domain. Add support to describe an optional power-domains for the I2C controllers in Rockchip SoCs. Signed-off-by: Jonas Karlman Reviewed-by: Rob Herring (Arm) Signed-off-by: Andi Shyti Link: https://lore.kernel.org/r/20250723085654.2273324-3-jonas@kwiboo.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 -- 2.47.2