linux-kernel - Re: [PATCH v4 1/2] dt-bindings: dma: add schema for altr,msgdma

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Date:   Tue, 4 May 2021 15:50:44 +0200
From:   Olivier Dautricourt <olivier.dautricourt@...lia.com>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Vinod Koul <vkoul@...nel.org>, Stefan Roese <sr@...x.de>,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: dma: add schema for altr,msgdma

Hello Rob,

The 05/03/2021 17:06, Rob Herring wrote:
> On Thu, Apr 29, 2021 at 9:16 AM Olivier Dautricourt
> <olivier.dautricourt@...lia.com> wrote:
> >
> > - add schema for Altera mSGDMA bindings in devicetree.
> > - add myself as 'Odd fixes' maintainer for this driver
>
> While I guess valid, the tools (b4) don't like the '/' in your
> message-id. Lore will escape it fine, but then you have to escape the
> url. Would be nice to avoid all that, but maybe this is Exchange's
> doing?

Yes it must be Exchange's doing, i'm not sure if i can
configure this but i'll check.. Thanks for noticing.

> > Signed-off-by: Olivier Dautricourt <olivier.dautricourt@...lia.com>
> > ---
> >
> > Notes:
> >     Changes in v2:
> >      - fix reg size in dt example
> >      - fix dt_binding check warning
> >      - add list in MAINTAINERS entry
> >
> >     Changes from v2 to v3:
> >      none
> >
> >     Changes from v3 to v4:
> >      none
> >
> >  .../devicetree/bindings/dma/altr,msgdma.yaml  | 62 +++++++++++++++++++
> >  MAINTAINERS                                   |  7 +++
> >  2 files changed, 69 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/dma/altr,msgdma.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/dma/altr,msgdma.yaml b/Documentation/devicetree/bindings/dma/altr,msgdma.yaml
> > new file mode 100644
> > index 000000000000..295e46c84bf9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/dma/altr,msgdma.yaml
> > @@ -0,0 +1,62 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/dma/altr,msgdma.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Altera mSGDMA IP core
> > +
> > +maintainers:
> > +  - Olivier Dautricourt <olivier.dautricourt@...lia.com>
> > +
> > +description: |
> > +  Altera / Intel modular Scatter-Gather Direct Memory Access (mSGDMA)
> > +  intellectual property (IP)
> > +
> > +allOf:
> > +  - $ref: "dma-controller.yaml#"
> > +
> > +properties:
> > +  compatible:
> > +    const: altr,msgdma
>
> Needs an SoC specific compatible.
>

It should be compatible with altera's socfpga family.
Should i leave a general compatible field such as "altr,msgdma" ?

example:
  compatible:
    enum:
      - altr,socfpga-msgdma
      - altr,msgdma


Thanks,

Olivier