| Message ID | 20230714015059.18775-2-yuji2.ishikawa@toshiba.co.jp (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add Toshiba Visconti Video Input Interface driver | expand |
On 14/07/2023 03:50, Yuji Ishikawa wrote: > Adds the Device Tree binding documentation that allows to describe > the Video Input Interface found in Toshiba Visconti SoCs. > > Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp> > Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> > --- > Changelog v2: Thank you for your patch. There is something to discuss/improve. > - no change > > Changelog v3: > - no change > > Changelog v4: > - fix style problems at the v3 patch > - remove "index" member > - update example > > Changelog v5: > - no change > > Changelog v6: > - add register definition of BUS-IF and MPU > > Changelog v7: > - remove trailing "bindings" from commit header message > - remove trailing "Device Tree Bindings" from title > - fix text wrapping of description > - change compatible to visconti5-viif Then the filename should be updated to match it: toshiba,visconti5-viif.yaml > - explicitly define allowed properties for port::endpoint > > .../bindings/media/toshiba,visconti-viif.yaml | 108 ++++++++++++++++++ > 1 file changed, 108 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml > ... > + port: > + $ref: /schemas/graph.yaml#/$defs/port-base > + unevaluatedProperties: false > + description: Input port, single endpoint describing the CSI-2 transmitter. > + > + properties: > + endpoint: > + $ref: video-interfaces.yaml# > + additionalProperties: false This should be rather: unevaluatedProperties: false > + > + required: ["bus-type", "clock-noncontinuous", "link-frequencies", "remote-endpoint"] That's not the syntax we try to keep in the bindings. See renesas,rzg2l-csi2.yaml. > + > + properties: > + data-lanes: > + description: VIIF supports 2 or 4 data lanes > + $ref: /schemas/types.yaml#/definitions/uint32-array > + minItems: 1 > + maxItems: 4 > + items: > + minimum: 1 > + maximum: 4 > + > + clock-lanes: > + description: VIIF supports 1 clock lane > + const: 0 Are you sure it must be on position 0? > + > + bus-type: true > + clock-noncontinuous: true > + link-frequencies: true > + remote-endpoint: true Drop all of these "xxx: true", should not be needed after converting to unevaluatedProperties: false > + > +required: > + - compatible > + - reg > + - interrupts > + - port > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + soc { > + #address-cells = <2>; > + #size-cells = <2>; > + > + viif@1c000000 { isp@ (or video or something else matching this type of the device, but this should be a generic name) > + compatible = "toshiba,visconti5-viif"; > + reg = <0 0x1c000000 0 0x6000>, > + <0 0x1c008000 0 0x400>, > + <0 0x1c00E000 0 0x1000>, > + <0 0x2417A000 0 0x1000>; Lowercase hex, please. Best regards, Krzysztof
Hello Krzysztof Thank you for your review comments. > -----Original Message----- > From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > Sent: Friday, July 14, 2023 4:50 PM > To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開) > <yuji2.ishikawa@toshiba.co.jp>; Hans Verkuil <hverkuil@xs4all.nl>; Sakari > Ailus <sakari.ailus@iki.fi>; Laurent Pinchart > <laurent.pinchart@ideasonboard.com>; Mauro Carvalho Chehab > <mchehab@kernel.org>; Rob Herring <robh+dt@kernel.org>; Krzysztof > Kozlowski <krzysztof.kozlowski+dt@linaro.org>; Conor Dooley > <conor+dt@kernel.org>; iwamatsu nobuhiro(岩松 信洋 ○ＤＩＴＣ□ＤＩＴ○ > ＯＳＴ) <nobuhiro1.iwamatsu@toshiba.co.jp>; Mark Brown > <broonie@kernel.org> > Cc: linux-media@vger.kernel.org; devicetree@vger.kernel.org; > linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org > Subject: Re: [PATCH v7 1/5] dt-bindings: media: platform: visconti: Add Toshiba > Visconti Video Input Interface > > On 14/07/2023 03:50, Yuji Ishikawa wrote: > > Adds the Device Tree binding documentation that allows to describe the > > Video Input Interface found in Toshiba Visconti SoCs. > > > > Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp> > > Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> > > --- > > Changelog v2: > > Thank you for your patch. There is something to discuss/improve. > > > - no change > > > > Changelog v3: > > - no change > > > > Changelog v4: > > - fix style problems at the v3 patch > > - remove "index" member > > - update example > > > > Changelog v5: > > - no change > > > > Changelog v6: > > - add register definition of BUS-IF and MPU > > > > Changelog v7: > > - remove trailing "bindings" from commit header message > > - remove trailing "Device Tree Bindings" from title > > - fix text wrapping of description > > - change compatible to visconti5-viif > > Then the filename should be updated to match it: > toshiba,visconti5-viif.yaml > I'll change the filename to toshiba,visconti5-viif.yaml > > - explicitly define allowed properties for port::endpoint > > > > .../bindings/media/toshiba,visconti-viif.yaml | 108 > > ++++++++++++++++++ > > 1 file changed, 108 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml > > > > ... > > > + port: > > + $ref: /schemas/graph.yaml#/$defs/port-base > > + unevaluatedProperties: false > > + description: Input port, single endpoint describing the CSI-2 transmitter. > > + > > + properties: > > + endpoint: > > + $ref: video-interfaces.yaml# > > + additionalProperties: false > > This should be rather: > unevaluatedProperties: false In the previous discussion with Laurent, I believe additionalProperties was preferred in terms of handling properties not explicitly mentioned. https://lore.kernel.org/all/Y82NtJCtr+CZgS9k@pendragon.ideasonboard.com/ Do you have concern about defaulting properties in video-interface.yaml to forbidden? If defaulting to optional (like most of other bindings) is better, I'll use unevaluatedProperties. > > + > > + required: ["bus-type", "clock-noncontinuous", > > + "link-frequencies", "remote-endpoint"] > > That's not the syntax we try to keep in the bindings. See renesas,rzg2l-csi2.yaml. > I'll use a line for every element. > > + > > + properties: > > + data-lanes: > > + description: VIIF supports 2 or 4 data lanes > > + $ref: /schemas/types.yaml#/definitions/uint32-array > > + minItems: 1 > > + maxItems: 4 > > + items: > > + minimum: 1 > > + maximum: 4 > > + > > + clock-lanes: > > + description: VIIF supports 1 clock lane > > + const: 0 > > Are you sure it must be on position 0? > Because a Visconti5 CSI2RX has only clock-lane0, there's no need to specify clock-lane with device tree. I'll drop "clock-lanes". > > + > > + bus-type: true > > + clock-noncontinuous: true > > + link-frequencies: true > > + remote-endpoint: true > > Drop all of these "xxx: true", should not be needed after converting to > unevaluatedProperties: false > I'll drop "xxx: true" if unevaluatedProperties is chosen instead of additionalProperties. > > + > > +required: > > + - compatible > > + - reg > > + - interrupts > > + - port > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + #include <dt-bindings/interrupt-controller/arm-gic.h> > > + #include <dt-bindings/interrupt-controller/irq.h> > > + > > + soc { > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + viif@1c000000 { > > isp@ > (or video or something else matching this type of the device, but this should be a > generic name) > I'll use video@1c000000. > > + compatible = "toshiba,visconti5-viif"; > > + reg = <0 0x1c000000 0 0x6000>, > > + <0 0x1c008000 0 0x400>, > > + <0 0x1c00E000 0 0x1000>, > > + <0 0x2417A000 0 0x1000>; > > Lowercase hex, please. > I'll fix them. > Best regards, > Krzysztof Best regards, Yuji
On 25/07/2023 08:08, yuji2.ishikawa@toshiba.co.jp wrote: >> unevaluatedProperties: false > > In the previous discussion with Laurent, I believe additionalProperties was preferred in terms of handling properties not explicitly mentioned. > > https://lore.kernel.org/all/Y82NtJCtr+CZgS9k@pendragon.ideasonboard.com/ OK. > > Do you have concern about defaulting properties in video-interface.yaml to forbidden? > If defaulting to optional (like most of other bindings) is better, I'll use unevaluatedProperties. > ... > there's no need to specify clock-lane with device tree. > > I'll drop "clock-lanes". > >>> + >>> + bus-type: true >>> + clock-noncontinuous: true >>> + link-frequencies: true >>> + remote-endpoint: true >> >> Drop all of these "xxx: true", should not be needed after converting to >> unevaluatedProperties: false >> > > I'll drop "xxx: true" if unevaluatedProperties is chosen instead of additionalProperties. Since we keep unevaluated, this should stay. Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml new file mode 100644 index 000000000..8377f75b3 --- /dev/null +++ b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml @@ -0,0 +1,108 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/toshiba,visconti-viif.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Toshiba Visconti5 SoC Video Input Interface + +maintainers: + - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> + +description: |- + Toshiba Visconti5 SoC Video Input Interface (VIIF) receives MIPI CSI2 video + stream, processes the stream with image signal processors (L1ISP, L2ISP), + then stores pictures to main memory. + +properties: + compatible: + const: toshiba,visconti5-viif + + reg: + items: + - description: registers for capture control + - description: registers for CSI2 receiver control + - description: registers for bus interface unit control + - description: registers for Memory Protection Unit + + interrupts: + items: + - description: Sync Interrupt + - description: Status (Error) Interrupt + - description: CSI2 Receiver Interrupt + - description: L1ISP Interrupt + + port: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Input port, single endpoint describing the CSI-2 transmitter. + + properties: + endpoint: + $ref: video-interfaces.yaml# + additionalProperties: false + + required: ["bus-type", "clock-noncontinuous", "link-frequencies", "remote-endpoint"] + + properties: + data-lanes: + description: VIIF supports 2 or 4 data lanes + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 4 + items: + minimum: 1 + maximum: 4 + + clock-lanes: + description: VIIF supports 1 clock lane + const: 0 + + bus-type: true + clock-noncontinuous: true + link-frequencies: true + remote-endpoint: true + +required: + - compatible + - reg + - interrupts + - port + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + soc { + #address-cells = <2>; + #size-cells = <2>; + + viif@1c000000 { + compatible = "toshiba,visconti5-viif"; + reg = <0 0x1c000000 0 0x6000>, + <0 0x1c008000 0 0x400>, + <0 0x1c00E000 0 0x1000>, + <0 0x2417A000 0 0x1000>; + interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>; + + port { + #address-cells = <1>; + #size-cells = <0>; + + csi_in0: endpoint { + remote-endpoint = <&imx219_out0>; + bus-type = <4>; + data-lanes = <1 2>; + clock-lanes = <0>; + clock-noncontinuous; + link-frequencies = /bits/ 64 <456000000>; + }; + }; + }; + };