linux-kernel - Re: [PATCH v2] dt-bindings: firmware: fsl,scu: Mark multi-channel MU layouts as deprecated

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Message-ID: <176971067833.1454686.17086963865281930203.robh@kernel.org>
Date: Thu, 29 Jan 2026 12:17:59 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc: devicetree@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
	Peng Fan <peng.fan@....com>, Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Dong Aisheng <aisheng.dong@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Shawn Guo <shawnguo@...nel.org>, linux-kernel@...r.kernel.org,
	Fabio Estevam <festevam@...il.com>, imx@...ts.linux.dev,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Frank Li <frank.li@....com>
Subject: Re: [PATCH v2] dt-bindings: firmware: fsl,scu: Mark multi-channel MU
 layouts as deprecated


On Tue, 27 Jan 2026 07:06:00 +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> The SCU MU driver has already supported the simple and efficient single-TX
> and single-RX channel layout since 2021. The older multi-channel MU
> configurations (tx0..tx3 and rx0..rx3) are less efficient in practice and
> not needed.
> 
> Mark these legacy mbox-names and mboxes tuple layouts as deprecated in the
> binding schema. The driver continues to support them for backward
> compatibility in case firmware publishes the legacy properties.
> 
> The example section is updated accordingly to demonstrate the recommended
> layout.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
> Changes in v2:
> - A minor grammer update in commit log
> - Link to v1: https://lore.kernel.org/r/20260126-scu-v1-1-b9d31da12860@nxp.com
> ---
>  .../devicetree/bindings/firmware/fsl,scu.yaml        | 20 +++++++++++---------
>  1 file changed, 11 insertions(+), 9 deletions(-)
> 

Applied, thanks!