linux-kernel - Re: [PATCH RFC 1/3] dt-bindings: pinctrl: spacemit: add K3 SoC support

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Message-ID: <8840B91CE3D9278B+aUtWX6fizXnheGMl@kernel.org>
Date: Wed, 24 Dec 2025 10:56:31 +0800
From: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
To: Yixun Lan <dlan@...too.org>, Linus Walleij <linusw@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Troy Mitchell <troy.mitchell@...ux.spacemit.com>,
	linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 1/3] dt-bindings: pinctrl: spacemit: add K3 SoC
 support

Hi Yixun,

On Sat, Dec 20, 2025 at 06:14:53PM +0800, Yixun Lan wrote:
> Add new compatible string for SpacemiT K3 SoC, the pinctrl IP shares
> almost same logic with previous K1 generation, but has different register
> offset and pin configuration, for example the drive strength and
> schmitter trigger settings has been changed.
> 
> Signed-off-by: Yixun Lan <dlan@...too.org>
> ---
>  Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
> index d80e88aa07b4..c5b0218ad625 100644
> --- a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml
> @@ -11,7 +11,9 @@ maintainers:
>  
>  properties:
>    compatible:
> -    const: spacemit,k1-pinctrl
> +    enum:
> +      - spacemit,k1-pinctrl
> +      - spacemit,k3-pinctrl
The drive-strength description should be updated. The driver uses a
different current table between K1 and K3, but the binding description does not
mention K3.

                              - Troy
>  
>    reg:
>      items:
> 
> -- 
> 2.52.0
> 
>