linux-kernel - Re: [PATCH v2 3/5] dt-bindings: iio: adc: rockchip-saradc: Allow use of a power-domain

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Message-ID: <20250723165021.4e2dd324@jic23-huawei>
Date: Wed, 23 Jul 2025 16:50:21 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Jonas Karlman <jonas@...boo.se>
Cc: Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, David Lechner <dlechner@...libre.com>, Nuno
 Sá <nuno.sa@...log.com>, Andy Shevchenko <andy@...nel.org>,
 Yao Zi <ziyao@...root.org>, Chukun Pan <amadeus@....edu.cn>,
 devicetree@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-iio@...r.kernel.org
Subject: Re: [PATCH v2 3/5] dt-bindings: iio: adc: rockchip-saradc: Allow
 use of a power-domain

On Wed, 23 Jul 2025 08:56:45 +0000
Jonas Karlman <jonas@...boo.se> wrote:

> The SARADC controller in most Rockchip SoCs are part of power domains
> that are always powered on, i.e. PD_BUS or PD_PERI. 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 power domain of the
> SARADC controller.
> 
> On RK3528 the SARADC controller is part of the PD_VPU power domain.
> 
> Add support to describe an optional power-domains for the SARADC
> controller in Rockchip SoCs.
> 
> Signed-off-by: Jonas Karlman <jonas@...boo.se>
Applied to the testing branch of iio.git.

I'll be rebasing on rc1 once available.

Thanks,

Jonathan

> ---
> v2: Update commit message
> ---
>  Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
> index 41e0c56ef8e3..f776041fd08f 100644
> --- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
> @@ -47,6 +47,9 @@ properties:
>        - const: saradc
>        - const: apb_pclk
>  
> +  power-domains:
> +    maxItems: 1
> +
>    resets:
>      maxItems: 1
>