linux-kernel - Re: [PATCH v2 6/7] dt-bindings: mfd: syscon: Split and enforce documenting MFD children

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Date: Mon, 24 Jun 2024 14:28:25 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: linux-mediatek@...ts.infradead.org, Conor Dooley <conor+dt@...nel.org>,
	linux-kernel@...r.kernel.org,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Shan-Chun Hung <schung@...oton.com>,
	Orson Zhai <orsonzhai@...il.com>,
	Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	UNGLinuxDriver@...rochip.com,
	Steen Hegelund <Steen.Hegelund@...rochip.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@...il.com>,
	Khuong Dinh <khuong@...amperecomputing.com>,
	linux-arm-kernel@...ts.infradead.org,
	Lars Povlsen <lars.povlsen@...rochip.com>,
	Jiaxun Yang <jiaxun.yang@...goat.com>, Lee Jones <lee@...nel.org>,
	Daniel Machon <daniel.machon@...rochip.com>,
	Nishanth Menon <nm@...com>, Jacky Huang <ychuang3@...oton.com>,
	devicetree@...r.kernel.org,
	Matthias Brugger <matthias.bgg@...il.com>
Subject: Re: [PATCH v2 6/7] dt-bindings: mfd: syscon: Split and enforce
 documenting MFD children


On Sun, 16 Jun 2024 15:19:26 +0200, Krzysztof Kozlowski wrote:
> Simple syscon nodes can be documented in common syscon.yaml, however
> devices with simple-mfd compatible, thus with some children, should have
> their own schema listing these children.  Such listing makes the binding
> specific, allows better validation (so the incorrect child would not
> appear in the simple-mfd node) and actually enforces repeated rule for
> simple-mfd devices:
> 
>   "simple-mfd" is only for simple devices, where the children do not
>   depend on the parent.
> 
> Currently the syscon+simple-mfd binding is quite broad and allows
> any child or property, thus above rule cannot be enforced.
> 
> Split the syscon.yaml binding into:
> 1. Common syscon properties, used potentially by many bindings.
> 2. Simple syscon devices (NO simple-mfd!).
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
> 
> Depends on:
> 1. Patch in MFD: https://lore.kernel.org/all/171828959006.2643902.8308227314531523435.b4-ty@kernel.org/
> 2. Previous patches in the series.
> ---
>  .../devicetree/bindings/mfd/syscon-common.yaml     |  72 +++++
>  Documentation/devicetree/bindings/mfd/syscon.yaml  | 294 +++++++++++++--------
>  2 files changed, 251 insertions(+), 115 deletions(-)
> 

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