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Message-ID: <20230526-mural-expletive-76b9dd5db83b@spud>
Date: Fri, 26 May 2023 20:00:05 +0100
From: Conor Dooley <conor@...nel.org>
To: Tommaso Merciai <tomm.merciai@...il.com>
Cc: jacopo.mondi@...asonboard.com, laurent.pinchart@...asonboard.com,
martin.hecht@...et.eu, linuxfancy@...glegroups.com,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Hans Verkuil <hverkuil@...all.nl>,
Marco Felsch <m.felsch@...gutronix.de>,
Gerald Loacker <gerald.loacker@...fvision.net>,
Krzysztof Hałasa <khalasa@...p.pl>,
Shawn Tu <shawnx.tu@...el.com>,
Linus Walleij <linus.walleij@...aro.org>,
Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
Mikhail Rudenko <mike.rudenko@...il.com>,
Nicholas Roth <nicholas@...hemail.net>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] media: dt-bindings: alvium: add document YAML
binding
Hey Tommaso,
On Fri, May 26, 2023 at 07:39:43PM +0200, Tommaso Merciai wrote:
> Add documentation of device tree in YAML schema for the ALVIUM
> Camera from Allied Vision Inc.
>
> References:
> - https://www.alliedvision.com/en/products/embedded-vision-solutions
>
> Signed-off-by: Tommaso Merciai <tomm.merciai@...il.com>
> ---
> Changes since v1:
> - Fixed build error as suggested by RHerring bot
>
> .../media/i2c/alliedvision,alvium.yaml | 115 ++++++++++++++++++
> 1 file changed, 115 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/alliedvision,alvium.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium.yaml b/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium.yaml
> new file mode 100644
> index 000000000000..81e9e560c99d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/alliedvision,alvium.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: GPL-2.0
No dual license?
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/alliedvision,alvium.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Alliedvision Alvium Camera
> +
> +maintainers:
> + - Tommaso Merciai <tomm.merciai@...il.com>
> + - Martin Hecht <martin.hecht@...et.eu>
> +
> +allOf:
> + - $ref: /schemas/media/video-interface-devices.yaml#
> +
> +properties:
> + compatible:
> + const: alliedvision,alvium
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + description: XCLK Input Clock
Description is a bit moot when you have the clock name and there's only
one. No harm done I suppose.
> +
> + clock-names:
> + const: xclk
> +
> + powerdown-gpios:
> + maxItems: 1
> + description: >
You don't have any newlines, so you don't need a >
> + Reference to the GPIO connected to the powerdown pin, if any.
> +
> + reset-gpios:
> + maxItems: 1
> + description: >
> + Reference to the GPIO connected to the reset pin, if any.
> +
> + streamon-delay:
> + maxItems: 1
> + description: >
> + Delay before camera start capturing frames in us.
> +
> + rotation:
> + enum:
> + - 0
> + - 180
Could style this as enum: [0, 180], but I don't mind which you do.
> + port:
> + description: Digital Output Port
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + additionalProperties: false
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + const: 0
> + data-lanes:
> + minItems: 1
> + maxItems: 4
> + link-frequencies: true
> +
> + required:
> + - data-lanes
> + - link-frequencies
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - port
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/clock/imx8mp-clock.h>
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + camera: alvium@3c {
Label does not seem to be used & the generic node name should probably
be "camera", no?
> + compatible = "alliedvision,alvium";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_csi0_pwn>, <&pinctrl_csi0_rst>, <&pinctrl_csi_mclk>;
> + reg = <0x3c>;
> + clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO2>;
> + clock-names = "xclk";
> + assigned-clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO2>;
> + assigned-clock-parents = <&clk IMX8MP_CLK_24M>;
> + assigned-clock-rates = <24000000>;
> + streamon-delay = <20>;
> + powerdown-gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
> + status = "okay";
> +
> + port {
> + alvium_out: endpoint {
Ditto here, drop the unused label?
Otherwise, looks grand to me.
Cheers,
Conor.
> + remote-endpoint = <&mipi_csi_0_in>;
> + data-lanes = <1 2 3 4>;
> + link-frequencies = /bits/ 64 <681250000>;
> + clock-lanes = <0>;
> + };
> + };
> + };
> + };
> +
> +...
> --
> 2.34.1
>
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