linux-kernel - Re: [PATCH v2 2/4] dt-bindings: mfd: spacemit,p1: Add individual regulator supply properties

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20260129181604.GA1398997-robh@kernel.org>
Date: Thu, 29 Jan 2026 12:16:04 -0600
From: Rob Herring <robh@...nel.org>
To: Guodong Xu <guodong@...cstar.com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
	Yixun Lan <dlan@...too.org>, Alex Elder <elder@...cstar.com>,
	Lee Jones <lee@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Troy Mitchell <troy.mitchell@...ux.spacemit.com>,
	Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: mfd: spacemit,p1: Add individual
 regulator supply properties

On Sat, Jan 24, 2026 at 08:20:17AM +0800, Guodong Xu wrote:
> Add supply properties that match the P1 PMIC's actual hardware topology
> where each buck converter has its own VIN pin and LDO groups share
> common input pins. Supply names are defined according to the pinout
> names in the P1 datasheet.
> 
> This allows different boards to describe their actual power tree
> connections in devicetree rather than hardcoding supply relationships
> in the driver.

You are breaking both forward and backwards compatibility changing both 
the dts and the driver. If that is fine to do, then explicitly say so. 

A secondary issue is the binding and dts go via differ trees and we end 
up with intermittent warnings.

> 
> Signed-off-by: Guodong Xu <guodong@...cstar.com>
> ---
> v2: Remove providers from the dts example.
>     Pass the 'make dt_binding_check' test.
> ---
>  .../devicetree/bindings/mfd/spacemit,p1.yaml       | 49 +++++++++++++++++++++-
>  1 file changed, 47 insertions(+), 2 deletions(-)