linux-kernel - Re: [PATCH v2 06/10] dt-bindings: clock: airoha: Document new property airoha,chip-scu

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Message-ID: <8582dbad-c773-4f46-827a-83b00eed0882@kernel.org>
Date: Wed, 16 Jul 2025 16:29:12 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Michael Turquette <mturquette@...libre.com>,
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
 Felix Fietkau <nbd@....name>, linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 06/10] dt-bindings: clock: airoha: Document new
 property airoha,chip-scu

On 27/06/2025 10:20, Christian Marangi wrote:
> 
> Here the current DTS [1]. Nothing is stable for this and we can change
> it but I want to stress that the current HW block are VERY CONFUSING and
> SCRAMBELED. So it's really a matter of finding the least bad solution.
> 
> In SCU there are:
> - PART fot the clock register
> - 2 MDIO controller register
> 
> In chip SCU:
> - Other part of the clock register
> - Thermal driver register
> - PART of the pinctrl register
> 
> [1] https://github.com/Ansuel/openwrt/blob/openwrt-24.10-airoha-an7581-stable/target/linux/airoha/dts/an7583.dtsi#L361


Thanks and it proves: that's a no. You cannot have two devices with same
unit address. It means that chip-scu and scu ARE THE SAME devices.

> 


Best regards,
Krzysztof