From: Rob Herring <robh@kernel.org>
To: Dongchun Zhu <dongchun.zhu@mediatek.com>
Cc: "Linus Walleij" <linus.walleij@linaro.org>,
"Bartosz Golaszewski" <bgolaszewski@baylibre.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Sakari Ailus" <sakari.ailus@linux.intel.com>,
"Nicolas Boichat" <drinkcat@chromium.org>,
"Tomasz Figa" <tfiga@chromium.org>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"Cao Bing Bu" <bingbu.cao@intel.com>,
srv_heupstream <srv_heupstream@mediatek.com>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
"Sj Huang" <sj.huang@mediatek.com>,
"Linux Media Mailing List" <linux-media@vger.kernel.org>,
devicetree@vger.kernel.org, "Louis Kuo" <louis.kuo@mediatek.com>,
"Shengnan Wang (王圣男)" <shengnan.wang@mediatek.com>
Subject: Re: [V9, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings
Date: Wed, 27 May 2020 09:27:22 -0600 [thread overview]
Message-ID: <CAL_Jsq+sN0SVidTrY0ODXEkzkxYFvG1FTnL0oRQBSKf=ynLdyQ@mail.gmail.com> (raw)
In-Reply-To: <1590569355.8804.448.camel@mhfsdcap03>
On Wed, May 27, 2020 at 2:51 AM Dongchun Zhu <dongchun.zhu@mediatek.com> wrote:
>
> Hi Rob,
>
> Thanks for the review. Please see my replies below.
>
> On Tue, 2020-05-26 at 12:28 -0600, Rob Herring wrote:
> > On Sat, May 23, 2020 at 04:41:02PM +0800, Dongchun Zhu wrote:
> > > Add DT bindings documentation for Omnivision OV02A10 image sensor.
> > >
> > > Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
> > > ---
> > > .../bindings/media/i2c/ovti,ov02a10.yaml | 172 +++++++++++++++++++++
> > > MAINTAINERS | 7 +
> > > 2 files changed, 179 insertions(+)
> > > create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
> > > new file mode 100644
> > > index 0000000..56f31b5
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
> > > @@ -0,0 +1,172 @@
> > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > > +# Copyright (c) 2020 MediaTek Inc.
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/media/i2c/ovti,ov02a10.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Omnivision OV02A10 CMOS Sensor Device Tree Bindings
> > > +
> > > +maintainers:
> > > + - Dongchun Zhu <dongchun.zhu@mediatek.com>
> > > +
> > > +description: |-
> > > + The Omnivision OV02A10 is a low-cost, high performance, 1/5-inch, 2 megapixel
> > > + image sensor, which is the latest production derived from Omnivision's CMOS
> > > + image sensor technology. Ihis chip supports high frame rate speeds up to 30fps
> > > + @ 1600x1200 (UXGA) resolution transferred over a 1-lane MIPI interface. The
> > > + sensor output is available via CSI-2 serial data output.
> > > +
> > > +properties:
> > > + compatible:
> > > + const: ovti,ov02a10
> > > +
> > > + reg:
> > > + maxItems: 1
> > > +
> > > + clocks:
> > > + items:
> > > + - description: top mux camtg clock
> > > + - description: divider clock
> > > +
> > > + clock-names:
> > > + items:
> > > + - const: eclk
> > > + - const: freq_mux
> > > +
> > > + clock-frequency:
> > > + description:
> > > + Frequency of the eclk clock in Hertz.
> > > +
>
> Rob, shall we use 'maxItems: 1' to constrain property: clock-frequency?
No, because it is a scalar, not an array.
> Or could we adopt 'clock-frequency: true' directly here?
As-is is fine.
> > > + dovdd-supply:
> > > + description:
> > > + Definition of the regulator used as Digital I/O voltage supply.
> > > +
>
> Shall we add 'maxItems: 1' here?
No, supplies are always singular.
>
> > > + avdd-supply:
> > > + description:
> > > + Definition of the regulator used as Analog voltage supply.
> > > +
>
> Ditto.
>
> > > + dvdd-supply:
> > > + description:
> > > + Definition of the regulator used as Digital core voltage supply.
> > > +
>
> Ditto.
>
> > > + powerdown-gpios:
> > > + description:
> > > + Must be the device tree identifier of the GPIO connected to the
> > > + PD_PAD pin. This pin is used to place the OV02A10 into Standby mode
> > > + or Shutdown mode. As the line is active low, it should be
> > > + marked GPIO_ACTIVE_LOW.
> >
> > Need to define how many GPIOs ('maxItems: 1')
> >
>
> It would be fixed like this in next release.
> powerdown-gpios:
> maxItems: 1
> description:
> Must be the device tree identifier of the GPIO connected to the
> PD_PAD pin. This pin is used to place the OV02A10 into Standby mode
> or Shutdown mode. As the line is active low, it should be
> marked GPIO_ACTIVE_LOW.
>
> > > +
> > > + reset-gpios:
> > > + description:
> > > + Must be the device tree identifier of the GPIO connected to the
> > > + RST_PD pin. If specified, it will be asserted during driver probe.
> > > + As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
> >
> > Here too.
> >
>
> Similar as 'powerdown-gpios'.
> Fixed in next release.
>
> > > +
> > > + rotation:
> > > + description:
> > > + Definition of the sensor's placement.
> > > + allOf:
> > > + - $ref: "/schemas/types.yaml#/definitions/uint32"
> > > + - enum:
> > > + - 0 # Sensor Mounted Upright
> > > + - 180 # Sensor Mounted Upside Down
> > > + default: 0
> > > +
> > > + ovti,mipi-tx-speed:
> > > + description:
> > > + Indication of MIPI transmission speed select, which is to control D-PHY
> > > + timing setting by adjusting MIPI clock voltage to improve the clock
> > > + driver capability.
> > > + allOf:
> > > + - $ref: "/schemas/types.yaml#/definitions/uint32"
> > > + - enum:
> > > + - 0 # 20MHz - 30MHz
> > > + - 1 # 30MHz - 50MHz
> > > + - 2 # 50MHz - 75MHz
> > > + - 3 # 75MHz - 100MHz
> > > + - 4 # 100MHz - 130MHz
> > > + default: 3
> > > +
> > > + # See ../video-interfaces.txt for details
> > > + port:
> > > + type: object
> > > + additionalProperties: false
> >
> > Should have a description of what data the port has.
> >
>
> It would be updated as below in next release.
> port:
> type: object
> additionalProperties: false
> description:
> Input port node, single endpoint describing the CSI-2 transmitter.
Output?
>
> > > +
> > > + properties:
> > > + endpoint:
> > > + type: object
> > > + additionalProperties: false
> > > +
> > > + properties:
>
> Actually I wonder whether we need to declare 'clock-lanes' here?
Yes, if you are using it.
Rob
next prev parent reply other threads:[~2020-05-27 15:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 8:41 [V9, 0/2] media: i2c: Add support for OV02A10 sensor Dongchun Zhu
2020-05-23 8:41 ` [V9, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings Dongchun Zhu
2020-05-26 18:28 ` Rob Herring
2020-05-27 8:49 ` Dongchun Zhu
2020-05-27 15:27 ` Rob Herring [this message]
2020-05-27 21:16 ` Sakari Ailus
2020-05-28 3:34 ` Dongchun Zhu
2020-05-28 7:23 ` Sakari Ailus
2020-05-28 8:04 ` Dongchun Zhu
2020-05-29 13:43 ` Tomasz Figa
2020-06-01 2:33 ` Dongchun Zhu
2020-06-01 18:18 ` Tomasz Figa
2020-06-02 6:15 ` Dongchun Zhu
2020-06-02 9:56 ` Sakari Ailus
2020-06-04 2:20 ` Dongchun Zhu
2020-06-02 9:53 ` Sakari Ailus
2020-05-28 5:53 ` Dongchun Zhu
2020-05-23 8:41 ` [V9, 2/2] media: i2c: ov02a10: Add OV02A10 image sensor driver Dongchun Zhu
2020-06-04 2:14 ` Dongchun Zhu
2020-06-04 9:26 ` Sakari Ailus
2020-06-04 18:05 ` Tomasz Figa
2020-06-05 3:19 ` Dongchun Zhu
2020-06-10 19:44 ` Tomasz Figa
2020-06-11 9:53 ` Sakari Ailus
2020-06-11 9:57 ` Tomasz Figa
2020-06-11 10:03 ` Sakari Ailus
2020-06-12 11:01 ` Dongchun Zhu
2020-06-12 10:46 ` Dongchun Zhu
2020-06-12 18:39 ` Tomasz Figa
2020-06-15 5:54 ` Dongchun Zhu
2020-06-15 12:44 ` Tomasz Figa
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