linux-kernel - Re: [PATCH 1/1] dt-bindings: media: convert imx.txt to yaml format

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Message-ID: <Z//KCLUWlTMdsyd3@lizhi-Precision-Tower-5810>
Date: Wed, 16 Apr 2025 11:17:28 -0400
From: Frank Li <Frank.li@....com>
To: Rob Herring <robh@...nel.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Steve Longerbeam <slongerbeam@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	"open list:MEDIA INPUT INFRASTRUCTURE (V4L/DVB)" <linux-media@...r.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <imx@...ts.linux.dev>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] dt-bindings: media: convert imx.txt to yaml format

On Wed, Apr 16, 2025 at 07:42:26AM -0500, Rob Herring wrote:
> On Mon, Apr 14, 2025 at 05:07:18PM -0400, Frank Li wrote:
> > Convert binding doc imx.txt to yaml format. Create two yaml files:
> > fsl,imx6-mipi-csi2.yaml and fsl,imx-capture-subsystem.yaml.
> >
> > Additional changes:
> > - add example for fsl,imx6-mipi-csi2
> >
> > Signed-off-by: Frank Li <Frank.Li@....com>
> > ---
> >  .../media/fsl,imx-capture-subsystem.yaml      |  38 ++++++
> >  .../bindings/media/fsl,imx6-mipi-csi2.yaml    | 126 ++++++++++++++++++
> >  .../devicetree/bindings/media/imx.txt         |  53 --------
> >  3 files changed, 164 insertions(+), 53 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/media/fsl,imx-capture-subsystem.yaml
> >  create mode 100644 Documentation/devicetree/bindings/media/fsl,imx6-mipi-csi2.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/media/imx.txt
> >
> > diff --git a/Documentation/devicetree/bindings/media/fsl,imx-capture-subsystem.yaml b/Documentation/devicetree/bindings/media/fsl,imx-capture-subsystem.yaml
> > new file mode 100644
> > index 0000000000000..77be3c1f37c5b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/fsl,imx-capture-subsystem.yaml
> > @@ -0,0 +1,38 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/fsl,imx-capture-subsystem.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Freescale i.MX Media Video Device
> > +
...
> > +        reg = <0x021dc000 0x4000>;
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +        clocks = <&clks IMX6QDL_CLK_HSI_TX>,
> > +                 <&clks IMX6QDL_CLK_VIDEO_27M>,
> > +                 <&clks IMX6QDL_CLK_EIM_PODF>;
> > +        clock-names = "dphy", "ref", "pix";
> > +
> > +        port@0 {
> > +            reg = <0>;
> > +
> > +            endpoint {
> > +                remote-endpoint = <&ov5640_to_mipi_csi2>;
> > +                clock-lanes = <0>;
> > +                data-lanes = <1 2>;
> > +            };
> > +        };
>
> I would think at least 1 output port is required?

I checked dts file, only input port. I think old csi2 only need get data
from camera. csi's dma should save to memory.

Frank

>
>
> > +    };
> > +