| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <a3857c78-c221-176f-b862-a0435b301c67@ideasonboard.com>
Date: Mon, 9 Jan 2023 10:30:13 +0200
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Wolfram Sang <wsa@...nel.org>,
Luca Ceresoli <luca.ceresoli@...tlin.com>,
Andy Shevchenko <andriy.shevchenko@...el.com>,
Matti Vaittinen <Matti.Vaittinen@...rohmeurope.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Peter Rosin <peda@...ntia.se>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Michael Tretter <m.tretter@...gutronix.de>,
Shawn Tu <shawnx.tu@...el.com>,
Hans Verkuil <hverkuil@...all.nl>,
Mike Pagano <mpagano@...too.org>,
Krzysztof Hałasa <khalasa@...p.pl>,
Marek Vasut <marex@...x.de>, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v6 5/8] dt-bindings: media: add TI DS90UB960 FPD-Link III
Deserializer
On 08/01/2023 05:23, Laurent Pinchart wrote:
> Hi Tomi,
>
> Thank you for the patch.
>
> On Thu, Jan 05, 2023 at 04:03:04PM +0200, Tomi Valkeinen wrote:
>> Add DT bindings for TI DS90UB960 FPD-Link III Deserializer.
>>
>> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
>> Reviewed-by: Rob Herring <robh@...nel.org>
>> ---
>> .../bindings/media/i2c/ti,ds90ub960.yaml | 402 ++++++++++++++++++
>> 1 file changed, 402 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
>> new file mode 100644
>> index 000000000000..664799ae55be
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub960.yaml
>> @@ -0,0 +1,402 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub960.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Texas Instruments DS90UB9XX Family FPD-Link Deserializer Hubs
>> +
>> +maintainers:
>> + - Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
>> +
>> +description:
>> + The TI DS90UB9XX devices are FPD-Link video deserializers with I2C and GPIO
>> + forwarding.
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - ti,ds90ub960-q1
>> + - ti,ds90ub9702-q1
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 1
>> + description:
>> + Reference clock connected to the REFCLK pin.
>> +
>> + clock-names:
>> + items:
>> + - const: refclk
>> +
>> + powerdown-gpios:
>> + maxItems: 1
>> + description:
>> + Specifier for the GPIO connected to the PDB pin.
>> +
>> + i2c-alias-pool:
>> + $ref: /schemas/types.yaml#/definitions/uint16-array
>> + description:
>> + I2C alias pool is a pool of I2C addresses on the main I2C bus that can be
>> + used to access the remote peripherals on the serializer's I2C bus. The
>> + addresses must be available, not used by any other peripheral. Each
>> + remote peripheral is assigned an alias from the pool, and transactions to
>> + that address will be forwarded to the remote peripheral, with the address
>> + translated to the remote peripheral's real address. This property is not
>> + needed if there are no I2C addressable remote peripherals.
>> +
>> + links:
>> + type: object
>> + additionalProperties: false
>> +
>> + properties:
>> + '#address-cells':
>> + const: 1
>> +
>> + '#size-cells':
>> + const: 0
>> +
>> + ti,manual-strobe:
>> + type: boolean
>> + description:
>> + Enable manual strobe position and EQ level
>> +
>> + patternProperties:
>> + '^link@[0-3]$':
>> + type: object
>> + additionalProperties: false
>> + properties:
>> + reg:
>> + description: The link number
>> + maxItems: 1
>> +
>> + i2c-alias:
>> + description:
>> + The I2C address used for the serializer. Transactions to this
>> + address on the I2C bus where the deserializer resides are
>> + forwarded to the serializer.
>> +
>> + ti,rx-mode:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum:
>> + - 0 # RAW10
>> + - 1 # RAW12 HF
>> + - 2 # RAW12 LF
>> + - 3 # CSI2 SYNC
>> + - 4 # CSI2 NON-SYNC
>> + description:
>> + FPD-Link Input Mode. This should reflect the hardware and the
>> + default mode of the connected camera module.
>
> As the remote device may not be a camera, I'd write "of the connected
> device" or "of the connected serializer".
I was trying to include the sensor also in the "camera module", as the
sensor's "normal" pixel cloud would affect RAW modes (HF/LF). Perhaps
"connected device" covers this.
>> +
>> + ti,cdr-mode:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum:
>> + - 0 # FPD-Link III
>> + - 1 # FPD-Link IV
>> + description:
>> + FPD-Link CDR Mode. This should reflect the hardware and the
>> + default mode of the connected camera module.
>> +
>> + ti,strobe-pos:
>> + $ref: /schemas/types.yaml#/definitions/int32
>> + minimum: -13
>> + maximum: 13
>> + description: Manual strobe position
>> +
>> + ti,eq-level:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + maximum: 14
>> + description: Manual EQ level
>> +
>> + serializer:
>> + type: object
>> + description: FPD-Link Serializer node
>> +
>> + required:
>> + - reg
>> + - i2c-alias
>> + - ti,rx-mode
>> + - serializer
>> +
>> + ports:
>> + $ref: /schemas/graph.yaml#/properties/ports
>> +
>> + properties:
>> + port@0:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: FPD-Link input 0
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> + description:
>> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
>> + hsync-active and vsync-active must be defined.
>> +
>> + port@1:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: FPD-Link input 1
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> + description:
>> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
>> + hsync-active and vsync-active must be defined.
>> +
>> + port@2:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: FPD-Link input 2
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> + description:
>> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
>> + hsync-active and vsync-active must be defined.
>> +
>> + port@3:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: FPD-Link input 3
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> + description:
>> + Endpoint for FPD-Link port. If the RX mode for this port is RAW,
>> + hsync-active and vsync-active must be defined.
>> +
>> + port@4:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: CSI-2 Output 0
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> +
>> + properties:
>> + data-lanes:
>> + minItems: 1
>> + maxItems: 4
>> +
>> + required:
>> + - data-lanes
>> +
>> + port@5:
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + unevaluatedProperties: false
>> + description: CSI-2 Output 1
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> +
>> + properties:
>> + data-lanes:
>> + minItems: 1
>> + maxItems: 4
>> +
>> + required:
>> + - data-lanes
>
> I think you need
>
> required:
> - port@0
> - port@1
> - port@2
> - port@3
> - port@4
> - port@5
Is that needed? I think often some of the ports are unused (e.g. the
example in this yaml file). Is it customary to still require empty port
nodes in the DT?
Tomi
Powered by blists - more mailing lists