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Message-ID: <20210708140235.GB3@paasikivi.fi.intel.com>
Date: Thu, 8 Jul 2021 17:02:35 +0300
From: "sakari.ailus@...ux.intel.com" <sakari.ailus@...ux.intel.com>
To: Stefan Riedmüller <S.Riedmueller@...tec.de>
Cc: "mchehab@...nel.org" <mchehab@...nel.org>,
"laurent.pinchart@...asonboard.com"
<laurent.pinchart@...asonboard.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>
Subject: Re: [PATCH v4 5/6] media: dt-bindings: mt9p031: Convert bindings to
yaml
Hi Stefan,
On Thu, Jul 08, 2021 at 01:34:17PM +0000, Stefan Riedmüller wrote:
> Hi Sakari,
>
> On Thu, 2021-07-08 at 14:23 +0300, Sakari Ailus wrote:
> > Hi Stefan,
> >
> > Thanks for the patch.
>
> Thanks for your feedback!
You're welcome!
>
> >
> > On Thu, Jul 08, 2021 at 11:19:21AM +0200, Stefan Riedmueller wrote:
> > > Convert mt9p031 sensor bindings to yaml schema. Also update the
> > > MAINTAINERS entry.
> > >
> > > Signed-off-by: Stefan Riedmueller <s.riedmueller@...tec.de>
> > > ---
> > > .../bindings/media/i2c/aptina,mt9p031.yaml | 75 +++++++++++++++++++
> > > .../devicetree/bindings/media/i2c/mt9p031.txt | 40 ----------
> > > MAINTAINERS | 1 +
> > > 3 files changed, 76 insertions(+), 40 deletions(-)
> > > create mode 100644
> > > Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > delete mode 100644
> > > Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > >
> > > diff --git
> > > a/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > b/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > new file mode 100644
> > > index 000000000000..7de62e339895
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > @@ -0,0 +1,75 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/media/i2c/mt9p031.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> > > +
> > > +maintainers:
> > > + - Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > > +
> > > +description: |
> > > + The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image
> > > sensor
> > > + with an active array size of 2592H x 1944V. It is programmable through
> > > a
> > > + simple two-wire serial interface.
> > > +
> > > +properties:
> > > + compatible:
> > > + enum:
> > > + - aptina,mt9p031
> > > + - aptina,mt9p031m
> > > +
> > > + reg:
> > > + description: I2C device address
> > > + maxItems: 1
> > > +
> > > + reset-gpios:
> > > + maxItems: 1
> > > + description: Chip reset GPIO
> > > +
> > > + port:
> > > + $ref: /schemas/graph.yaml#/properties/port
> >
> > This should probably be:
> >
> > $ref: /schemas/graph.yaml#/$defs/port-base
>
> I actually was not sure which one of these to use because I found both in
> existing bindings. Also /schemas/graph.yaml#/properties/port has a reference
> to $defs/port-base. It would be nice if you or someone else could give me a
> hint why /schemas/graph.yaml#/$defs/port-base would be the correct one here.
I haven't dug into the details but:
<URL:https://lore.kernel.org/linux-media/20210623164344.2571043-1-robh@kernel.org/T/>
>
> >
> > > + addittionalProeprties: false
> >
> > Could you run
> >
> > make dt_binding_check
> > DT_SCHEMA_FILES=Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.y
> > aml
> >
> > please?
>
> Sorry, I totally forgot about this. I'll do so before sending the next
> version.
No worries.
>
> >
> > > +
> > > + properties:
> > > + endpoint:
> > > + $ref: /schemas/media/video-interfaces.yaml#
> > > + unevaluatedProperties: false
> > > +
> > > + properties:
> > > + input-clock-frequency: true
> > > + pixel-clock-frequency: true
> >
> > These two legacy properties were not in the endpoint previously.
>
> That's right, but they are being parsed from the endpoint so I figured they
> belong here. Should I mention this in the commit message?
Please do. I missed the driver did this.
Ideally the driver would use the common properties but it's old and
unlikely to be used in new boards anyway I guess.
>
> Thanks,
> Stefan
>
> >
> > > +
> > > + required:
> > > + - input-clock-frequency
> > > + - pixel-clock-frequency
> > > +
> > > +required:
> > > + - compatible
> > > + - reg
> > > + - port
> > > +
> > > +additionalProperties: false
> > > +
> > > +examples:
> > > + - |
> > > + i2c0 {
> > > + #address-cells = <1>;
> > > + #size-cells = <0>;
> > > +
> > > + mt9p031@5d {
> > > + compatible = "aptina,mt9p031";
> > > + reg = <0x5d>;
> > > + reset-gpios = <&gpio_sensor 0 0>;
> > > +
> > > + port {
> > > + mt9p031_1: endpoint {
> > > + input-clock-frequency = <6000000>;
> > > + pixel-clock-frequency = <96000000>;
> > > + };
> > > + };
> > > + }:
> > > + };
> > > +
> > > +...
> > > diff --git a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > > b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > > deleted file mode 100644
> > > index cb60443ff78f..000000000000
> > > --- a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> > > +++ /dev/null
> > > @@ -1,40 +0,0 @@
> > > -* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> > > -
> > > -The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image sensor
> > > with
> > > -an active array size of 2592H x 1944V. It is programmable through a
> > > simple
> > > -two-wire serial interface.
> > > -
> > > -Required Properties:
> > > -- compatible: value should be either one among the following
> > > - (a) "aptina,mt9p031" for mt9p031 sensor
> > > - (b) "aptina,mt9p031m" for mt9p031m sensor
> > > -
> > > -- input-clock-frequency: Input clock frequency.
> > > -
> > > -- pixel-clock-frequency: Pixel clock frequency.
> > > -
> > > -Optional Properties:
> > > -- reset-gpios: Chip reset GPIO
> > > -
> > > -For further reading on port node refer to
> > > -Documentation/devicetree/bindings/media/video-interfaces.txt.
> > > -
> > > -Example:
> > > -
> > > - i2c0@...2000 {
> > > - ...
> > > - ...
> > > - mt9p031@5d {
> > > - compatible = "aptina,mt9p031";
> > > - reg = <0x5d>;
> > > - reset-gpios = <&gpio3 30 0>;
> > > -
> > > - port {
> > > - mt9p031_1: endpoint {
> > > - input-clock-frequency = <6000000>;
> > > - pixel-clock-frequency = <96000000>;
> > > - };
> > > - };
> > > - };
> > > - ...
> > > - };
> > > diff --git a/MAINTAINERS b/MAINTAINERS
> > > index c7456776ace5..f2123226baae 100644
> > > --- a/MAINTAINERS
> > > +++ b/MAINTAINERS
> > > @@ -12610,6 +12610,7 @@ M: Laurent Pinchart <
> > > laurent.pinchart@...asonboard.com>
> > > L: linux-media@...r.kernel.org
> > > S: Maintained
> > > T: git git://linuxtv.org/media_tree.git
> > > +F: Documentation/devicetree/bindings/media/i2c/aptina,mt9p031.yaml
> > > F: drivers/media/i2c/mt9p031.c
> > > F: include/media/i2c/mt9p031.h
> > >
--
Regards,
Sakari Ailus
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