linux-kernel - Re: [PATCH v2] dt-bindings: mips: lantiq: Document lantiq dcdc binding

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: <20250815-crawling-edge-2f0f47f5bc53@spud>
Date: Fri, 15 Aug 2025 17:48:55 +0100
From: Conor Dooley <conor@...nel.org>
To: Aleksander Jan Bajkowski <olek2@...pl>
Cc: y@...d.smtp.subspace.kernel.org, tsbogend@...ha.franken.de,
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: mips: lantiq: Document lantiq dcdc
 binding

On Fri, Aug 15, 2025 at 06:46:21PM +0200, Aleksander Jan Bajkowski wrote:
> 
> On 8/15/25 17:48, Conor Dooley wrote:
> > On Fri, Aug 15, 2025 at 12:13:41PM +0200, Aleksander Jan Bajkowski wrote:
> > > Hi Conor,
> > > 
> > > On 8/14/25 22:48, Conor Dooley wrote:
> > > > On Thu, Aug 14, 2025 at 10:26:56AM +0200, Aleksander Jan Bajkowski wrote:
> > > > > Lantiq DCDC is a voltage converter with a voltage sensor.
> > > > > 
> > > > > Signed-off-by: Aleksander Jan Bajkowski <olek2@...pl>
> > > > > ---
> > > > >    .../mips/lantiq/lantiq,dcdc-xrx200.yaml       | 32 +++++++++++++++++++
> > > > >    1 file changed, 32 insertions(+)
> > > > >    create mode 100644 Documentation/devicetree/bindings/mips/lantiq/lantiq,dcdc-xrx200.yaml
> > > > > 
> > > > > diff --git a/Documentation/devicetree/bindings/mips/lantiq/lantiq,dcdc-xrx200.yaml b/Documentation/devicetree/bindings/mips/lantiq/lantiq,dcdc-xrx200.yaml
> > > > > new file mode 100644
> > > > > index 000000000000..5648b9676b3c
> > > > > --- /dev/null
> > > > > +++ b/Documentation/devicetree/bindings/mips/lantiq/lantiq,dcdc-xrx200.yaml
> > > > > @@ -0,0 +1,32 @@
> > > > > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > > > > +%YAML 1.2
> > > > > +---
> > > > > +$id: http://devicetree.org/schemas/mips/lantiq/lantiq,dcdc-xrx200.yaml#
> > > > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > > > +
> > > > > +title: Lantiq DCDC (DC-DC converter with voltage sensor)
> > > > > +
> > > > > +maintainers:
> > > > > +  - Aleksander Jan Bajkowski <olek2@...pl>
> > > > > +
> > > > > +properties:
> > > > > +  compatible:
> > > > > +    items:
> > > > > +      - enum:
> > > > > +          - lantiq,dcdc-xrx200
> > > > What is "xrx2000" in this context?
> > > 
> > > “xrx200” is one of the generations of Lantiq SoCs. It includes four part
> > > numbers
> > > with the same memory map. The other generations are amazon-se, danube,
> > > ARX100,
> > > GRX100, xRX200, xRX300, xRX330. These correspond to the internal code names:
> > > ase,
> > > danube, ar9, gr9, vr9, ar10, grx390.
> > And the dc-dc converter is part of the SoC?
> > Either way, you've got this file in the wrong location probably, dc-dc
> > converters are usually under the regulator directory.
> 
> 
> The converter is inside the SoC. This driver only reads the voltage and
> prints it at startup. The voltage supplied by this converter powers one
> of the power domains. It powers the CPU core and probably other
> peripherals as well. The voltage is programmed by the bootloader and
> Linux never touches it.

Okay cool, compatible is fine then :) The location change and more
information (like what you've given here) in the description are still
needed though unfortunately for you.

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)