Re: [PATCH 04/10] dt-bindings: treewide: add feature-domains description in binding files

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Gatien Chevallier <gatien.chevallier@xxxxxxxxxxx> writes:

> feature-domains is an optional property that allows a peripheral to
> refer to one or more feature domain controller(s).
>
> Description of this property is added to all peripheral binding files of
> the peripheral under the STM32 firewall controllers. It allows an accurate
> representation of the hardware, where various peripherals are connected
> to this firewall bus. The firewall can then check the peripheral accesses
> before allowing it to probe.
>
> Signed-off-by: Gatien Chevallier <gatien.chevallier@xxxxxxxxxxx>
> ---
>
> Disclaimer: Some error with dtbs_check will be observed as I've
> considered the property to be generic, as Rob asked
>
>  Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml  | 4 ++++
>  Documentation/devicetree/bindings/dma/st,stm32-dma.yaml      | 4 ++++
>  Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml   | 4 ++++
>  Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml      | 4 ++++
>  Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml  | 4 ++++
>  .../devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml      | 4 ++++
>  Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml  | 4 ++++
>  .../devicetree/bindings/media/cec/st,stm32-cec.yaml          | 4 ++++
>  Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml   | 4 ++++
>  .../bindings/memory-controllers/st,stm32-fmc2-ebi.yaml       | 4 ++++
>  Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml  | 4 ++++
>  Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml   | 5 +++++
>  Documentation/devicetree/bindings/mmc/arm,pl18x.yaml         | 4 ++++
>  Documentation/devicetree/bindings/net/stm32-dwmac.yaml       | 4 ++++
>  Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml | 4 ++++
>  .../devicetree/bindings/regulator/st,stm32-vrefbuf.yaml      | 4 ++++
>  Documentation/devicetree/bindings/rng/st,stm32-rng.yaml      | 4 ++++
>  Documentation/devicetree/bindings/serial/st,stm32-uart.yaml  | 4 ++++
>  Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml    | 4 ++++
>  Documentation/devicetree/bindings/sound/st,stm32-sai.yaml    | 4 ++++
>  .../devicetree/bindings/sound/st,stm32-spdifrx.yaml          | 4 ++++
>  Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml     | 4 ++++
>  Documentation/devicetree/bindings/spi/st,stm32-spi.yaml      | 4 ++++
>  Documentation/devicetree/bindings/usb/dwc2.yaml              | 4 ++++
>  24 files changed, 97 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml b/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> index b767ec72a999..daf8dcaef627 100644
> --- a/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> +++ b/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> @@ -50,6 +50,10 @@ properties:
>    power-domains:
>      maxItems: 1
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +

I beliewe feature-domains is generic binding. This means that maxItems
can be implementation dependend. I would rather drop maxItems so the
following format will be possible:

          feature-domains = <&etzpc 1>, <&etzpc 2>, <&some_other_domain 1 2 3 4>
          feature-domain-names = "firewall 1", "firewall 2", "other_domain"

Also I beliewe driver will handle feature-domain-names property so it
will parse feature-domains only related to the firewall.

>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/dma/st,stm32-dma.yaml b/Documentation/devicetree/bindings/dma/st,stm32-dma.yaml
> index 329847ef096a..2236ac95574b 100644
> --- a/Documentation/devicetree/bindings/dma/st,stm32-dma.yaml
> +++ b/Documentation/devicetree/bindings/dma/st,stm32-dma.yaml
> @@ -82,6 +82,10 @@ properties:
>      description: if defined, it indicates that the controller
>        supports memory-to-memory transfer
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml b/Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml
> index e722fbcd8a5f..47ae890f5bd9 100644
> --- a/Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml
> +++ b/Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml
> @@ -28,6 +28,10 @@ properties:
>    resets:
>      maxItems: 1
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> index 94b75d9f66cd..326a96741f50 100644
> --- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> +++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> @@ -99,6 +99,10 @@ properties:
>  
>    wakeup-source: true
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
> index 995cbf8cefc6..3eb20d67f0fc 100644
> --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
> @@ -93,6 +93,10 @@ properties:
>    '#size-cells':
>      const: 0
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  allOf:
>    - if:
>        properties:
> diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml
> index 1970503389aa..bc34ae172417 100644
> --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml
> @@ -59,6 +59,10 @@ properties:
>        If not, SPI CLKOUT frequency will not be accurate.
>      maximum: 20000000
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml b/Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml
> index 04045b932bd2..90d35a2a6504 100644
> --- a/Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml
> +++ b/Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml
> @@ -45,6 +45,10 @@ properties:
>    '#size-cells':
>      const: 0
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  additionalProperties: false
>  
>  required:
> diff --git a/Documentation/devicetree/bindings/media/cec/st,stm32-cec.yaml b/Documentation/devicetree/bindings/media/cec/st,stm32-cec.yaml
> index 2314a9a14650..f88e3c0e6175 100644
> --- a/Documentation/devicetree/bindings/media/cec/st,stm32-cec.yaml
> +++ b/Documentation/devicetree/bindings/media/cec/st,stm32-cec.yaml
> @@ -29,6 +29,10 @@ properties:
>        - const: cec
>        - const: hdmi-cec
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> index 6b3e413cedb2..4fa1d14910df 100644
> --- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml
> @@ -36,6 +36,10 @@ properties:
>    resets:
>      maxItems: 1
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>    port:
>      $ref: /schemas/graph.yaml#/$defs/port-base
>      unevaluatedProperties: false
> diff --git a/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.yaml b/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.yaml
> index 14f1833d37c9..63b3d012147b 100644
> --- a/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.yaml
> +++ b/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.yaml
> @@ -45,6 +45,10 @@ properties:
>        Reflects the memory layout with four integer values per bank. Format:
>        <bank-number> 0 <address of the bank> <size>
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  patternProperties:
>    "^.*@[0-4],[a-f0-9]+$":
>      additionalProperties: true
> diff --git a/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
> index 27329c5dc38e..59d770544950 100644
> --- a/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
> +++ b/Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml
> @@ -44,6 +44,10 @@ properties:
>  
>    wakeup-source: true
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>    pwm:
>      type: object
>      additionalProperties: false
> diff --git a/Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml b/Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml
> index f84e09a5743b..d5ad097e94ec 100644
> --- a/Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml
> +++ b/Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml
> @@ -67,6 +67,11 @@ properties:
>    "#size-cells":
>      const: 0
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
> +
>    pwm:
>      type: object
>      additionalProperties: false
> diff --git a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> index 2459a55ed540..6ebedee65153 100644
> --- a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> +++ b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> @@ -79,6 +79,10 @@ properties:
>            - const: rx
>            - const: tx
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>    power-domains: true
>  
>    resets:
> diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> index fc8c96b08d7d..0e408dc85c13 100644
> --- a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
> @@ -93,6 +93,10 @@ properties:
>        select RCC clock instead of ETH_REF_CLK.
>      type: boolean
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - clocks
> diff --git a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml
> index 24a3dbde223b..b9ac20c8bf05 100644
> --- a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml
> +++ b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml
> @@ -55,6 +55,10 @@ properties:
>      description: number of clock cells for ck_usbo_48m consumer
>      const: 0
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  # Required child nodes:
>  
>  patternProperties:
> diff --git a/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml b/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml
> index 05f4ad2c7d3a..02cefe4ef42b 100644
> --- a/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml
> +++ b/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml
> @@ -30,6 +30,10 @@ properties:
>    vdda-supply:
>      description: phandle to the vdda input analog voltage.
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> index 187b172d0cca..79eb5f5bd252 100644
> --- a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> +++ b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
> @@ -30,6 +30,10 @@ properties:
>      type: boolean
>      description: If set enable the clock detection management
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> index 1df8ffe95fc6..893978e7170f 100644
> --- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> @@ -70,6 +70,10 @@ properties:
>      enum: [1, 2, 4, 8, 12, 14, 16]
>      default: 8
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  allOf:
>    - $ref: rs485.yaml#
>    - $ref: serial.yaml#
> diff --git a/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml b/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
> index b9111d375b93..64c5898e51f8 100644
> --- a/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
> +++ b/Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml
> @@ -65,6 +65,10 @@ properties:
>      $ref: audio-graph-port.yaml#
>      unevaluatedProperties: false
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - "#sound-dai-cells"
> diff --git a/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml b/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml
> index 56d206f97a96..9bc08b7645dc 100644
> --- a/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml
> +++ b/Documentation/devicetree/bindings/sound/st,stm32-sai.yaml
> @@ -48,6 +48,10 @@ properties:
>    clock-names:
>      maxItems: 3
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.yaml b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.yaml
> index bc48151b9adb..f00e5db9ee3b 100644
> --- a/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.yaml
> +++ b/Documentation/devicetree/bindings/sound/st,stm32-spdifrx.yaml
> @@ -50,6 +50,10 @@ properties:
>    resets:
>      maxItems: 1
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - "#sound-dai-cells"
> diff --git a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
> index 8bba965a9ae6..2ac136802467 100644
> --- a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
> +++ b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml
> @@ -46,6 +46,10 @@ properties:
>        - const: tx
>        - const: rx
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  required:
>    - compatible
>    - reg
> diff --git a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
> index 9ca1a843c820..725c26daabe4 100644
> --- a/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
> +++ b/Documentation/devicetree/bindings/spi/st,stm32-spi.yaml
> @@ -59,6 +59,10 @@ properties:
>        - const: rx
>        - const: tx
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  patternProperties:
>    "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$":
>      type: object
> diff --git a/Documentation/devicetree/bindings/usb/dwc2.yaml b/Documentation/devicetree/bindings/usb/dwc2.yaml
> index d3506090f8b1..c372caf154fc 100644
> --- a/Documentation/devicetree/bindings/usb/dwc2.yaml
> +++ b/Documentation/devicetree/bindings/usb/dwc2.yaml
> @@ -171,6 +171,10 @@ properties:
>  
>    tpl-support: true
>  
> +  feature-domains:
> +    minItems: 1
> +    maxItems: 3
> +
>  dependencies:
>    port: [ usb-role-switch ]
>    role-switch-default-mode: [ usb-role-switch ]


-- 
Thanks,
Oleksii



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