linux-kernel - Re: [PATCH v3 0/7] dt-bindings: mfd: syscon: Document more compatibles and require simpe-mfd description

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Date: Thu, 27 Jun 2024 09:18:53 +0100
From: Lee Jones <lee@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Orson Zhai <orsonzhai@...il.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@...il.com>,
	Jacky Huang <ychuang3@...oton.com>,
	Shan-Chun Hung <schung@...oton.com>,
	Khuong Dinh <khuong@...amperecomputing.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chuanhua Lei <lchuanhua@...linear.com>,
	Rahul Tanwar <rtanwar@...linear.com>,
	Lars Povlsen <lars.povlsen@...rochip.com>,
	Steen Hegelund <Steen.Hegelund@...rochip.com>,
	Daniel Machon <daniel.machon@...rochip.com>,
	UNGLinuxDriver@...rochip.com, Nishanth Menon <nm@...com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Jiaxun Yang <jiaxun.yang@...goat.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Rahul Tanwar <rahul.tanwar@...ux.intel.com>,
	Amireddy Mallikarjuna reddy <mallikarjunax.reddy@...el.com>,
	"Zhu, Yi Xin" <Yixin.zhu@...el.com>,
	Maxime Ripard <mripard@...nel.org>
Subject: Re: [PATCH v3 0/7] dt-bindings: mfd: syscon: Document more
 compatibles and require simpe-mfd description

On Wed, 26 Jun 2024, Krzysztof Kozlowski wrote:

> Hi,
> 
> Dependency
> ==========
> Rebased on Lee's MFD tree, because dependency is there already:
> https://lore.kernel.org/all/171828959006.2643902.8308227314531523435.b4-ty@kernel.org/
> 
> Merging
> =======
> Preferrably everything via MFD tree (file/context dependencies).
> 
> Changes in v3
> =============
> - Add tags
> - intel,lgm-syscon: change maintainers (email bounce)
> - syscon/Split: drop unneeded |, use const instead of enum in select:
> - Link to v2: https://lore.kernel.org/r/20240616-dt-bindings-mfd-syscon-split-v2-0-571b5850174a@linaro.org
> 
> Changes in v2
> =============
> - Add acks
> - lgm-syscon: add ranges to binding and example
> - syscon.yaml: add big select with all compatibles for older dtschema
> - Link to v1: https://lore.kernel.org/r/20240519-dt-bindings-mfd-syscon-split-v1-0-aaf996e2313a@linaro.org
> 
> Description/problem
> ===================
> Simple syscon nodes can be documented in common syscon.yaml, however
> devices with simple-mfd compatible, thus 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.
> 
> Solution
> ========
> 1. Split the syscon.yaml binding into common syscon properties, used
>    potentially by many bindings, and only simple syscon devices (NO
>    simple-mfd!).
> 2. Move some known simple-mfd bindings from syscon.yaml to dedicated
>    files.
> 
> This patchset might introduce new dtbs_check warnings for devices having
> simple-mfd and being part of syscon.yaml previously. I fixed some of
> them, but probably not all.
> 
> Best regards,
> Krzysztof
> 
> To: Lee Jones <lee@...nel.org>
> To: Rob Herring <robh@...nel.org>
> To: Krzysztof Kozlowski <krzk+dt@...nel.org>
> To: Conor Dooley <conor+dt@...nel.org>
> To: Lars Povlsen <lars.povlsen@...rochip.com>
> To: Steen Hegelund <Steen.Hegelund@...rochip.com>
> To: Daniel Machon <daniel.machon@...rochip.com>
> To: UNGLinuxDriver@...rochip.com
> To: Nishanth Menon <nm@...com>
> To: Matthias Brugger <matthias.bgg@...il.com>
> To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-mediatek@...ts.infradead.org
> 
> ---
> Krzysztof Kozlowski (7):
>       dt-bindings: mfd: syscon: Drop hwlocks
>       dt-bindings: soc: sprd: sc9863a-glbregs: Document SC9863A syscon
>       dt-bindings: soc: intel: lgm-syscon: Move to dedicated schema
>       dt-bindings: soc: microchip: sparx5-cpu-syscon: Move to dedicated schema
>       dt-bindings: soc: ti: am654-serdes-ctrl: Move to dedicated schema
>       dt-bindings: mfd: syscon: Split and enforce documenting MFD children
>       dt-bindings: mfd: syscon: Add APM poweroff mailbox
> 
>  .../devicetree/bindings/mfd/syscon-common.yaml     |  71 +++++
>  Documentation/devicetree/bindings/mfd/syscon.yaml  | 306 ++++++++++++---------
>  .../bindings/soc/intel/intel,lgm-syscon.yaml       |  57 ++++
>  .../soc/microchip/microchip,sparx5-cpu-syscon.yaml |  49 ++++
>  .../bindings/soc/sprd/sprd,sc9863a-glbregs.yaml    |  55 ++++
>  .../bindings/soc/ti/ti,am654-serdes-ctrl.yaml      |  42 +++
>  6 files changed, 457 insertions(+), 123 deletions(-)
> ---
> base-commit: 8dc7c29f608649f3d9eca826e9d4fe4b8a32c472
> change-id: 20240517-dt-bindings-mfd-syscon-split-37e23996523d

Okay, I tried to apply these whilst fixing up all the conflicts, but
lost the will to live.  Please rebase and [RESEND].

-- 
Lee Jones [李琼斯]