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Date: Wed, 14 Jul 2021 10:01:29 +0000
From: Stefan Riedmüller <S.Riedmueller@...tec.de>
To: "robh@...nel.org" <robh@...nel.org>
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>,
"sakari.ailus@...ux.intel.com" <sakari.ailus@...ux.intel.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 5/6] media: dt-bindings: mt9p031: Convert bindings to
yaml
Hi Rob,
On Tue, 2021-07-13 at 20:19 -0600, Rob Herring wrote:
> On Mon, Jul 12, 2021 at 10:55:34AM +0200, Stefan Riedmueller wrote:
> > Convert mt9p031 sensor bindings to yaml schema. Also update the
> > MAINTAINERS entry.
> >
> > Although input-clock-frequency and pixel-clock-frequency have not been
> > definded as endpoint propierties in the textual bindings, the sensor
> > does parse them from the endpoint. Thus move these properties to the
> > endpoint in the new yaml bindings.
> >
> > 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..ad9a2db73d86
> > --- /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
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/aptina,mt9p031.yaml#
> > +$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:
> > + $ref: /schemas/graph.yaml#/$defs/port-base
> > + additionalProperties: false
> > +
> > + properties:
> > + endpoint:
> > + $ref: /schemas/media/video-interfaces.yaml#
>
> Doesn't look like you use any properties from video-interfaces.yaml. You
> should just reference graph.yaml#/$defs/endpoint-base instead.
Thanks for your comment. It made me realize, that I have something wrong. The
driver does use properties from the video interface as it parses the bus
configuration from the endpoint. But I thought these properties were
implicitly used by referencing the video-interfaces schema. Now I assume that
I have to mention them here explicitly. Correct?
>
> > + unevaluatedProperties: false
> > +
> > + properties:
> > + input-clock-frequency: true
> > + pixel-clock-frequency: true
>
> These are custom properties, so they need a type, description, and any
> constraints.
I'll add that.
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 a61f4f3b78a9..33dd81237a91 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -12635,6 +12635,7 @@ 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
> >
> > --
> > 2.25.1
> >
> >
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