linux-kernel - Re: [PATCH v2 1/3] dt-bindings: pinctrl: spacemit: add syscon property

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Message-ID: <176849295668.693144.16118634517088023109.robh@kernel.org>
Date: Thu, 15 Jan 2026 10:02:37 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-riscv@...ts.infradead.org,
	Linus Walleij <linusw@...nel.org>, Yixun Lan <dlan@...too.org>,
	devicetree@...r.kernel.org, Albert Ou <aou@...s.berkeley.edu>,
	Palmer Dabbelt <palmer@...belt.com>,
	Alexandre Ghiti <alex@...ti.fr>, Paul Walmsley <pjw@...nel.org>,
	spacemit@...ts.linux.dev
Subject: Re: [PATCH v2 1/3] dt-bindings: pinctrl: spacemit: add syscon
 property


On Thu, 08 Jan 2026 14:42:38 +0800, Troy Mitchell wrote:
> In order to access the protected IO power domain registers, a valid
> unlock sequence must be performed by writing the required keys to the
> AIB Secure Access Register (ASAR).
> 
> The ASAR register resides within the APBC register address space.
> A corresponding syscon property is added to allow the pinctrl driver
> to access this register.
> 
> Signed-off-by: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
> ---
> Changelog in v2:
> - add `spacemmit` prefix in the subject
> - remove offset in syscon property
> - remove `spacemit,apbc` property in required
> - Link to v1: https://lore.kernel.org/spacemit/20260108042753-GYA2796@gentoo.org/T/#m2ab46cd63cbb1b110eb317ee5b9d540d39cbd82b
> ---
>  Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>