netdev - Re: [PATCH net-next v2 1/4] dt-bindings: net: snps,dwmac: per channel irq

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Date: Sun, 7 Jan 2024 23:10:37 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Leong Ching Swee <leong.ching.swee@...el.com>, 
	Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>, 
	Alexandre Torgue <alexandre.torgue@...s.st.com>, Jose Abreu <joabreu@...opsys.com>, 
	"David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Giuseppe Cavallaro <peppe.cavallaro@...com>, linux-stm32@...md-mailman.stormreply.com, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
	devicetree@...r.kernel.org, Rohan G Thomas <rohan.g.thomas@...el.com>
Subject: Re: [PATCH net-next v2 1/4] dt-bindings: net: snps,dwmac: per
 channel irq

On Fri, Jan 05, 2024 at 03:09:22PM +0800, Leong Ching Swee wrote:
> From: Swee Leong Ching <leong.ching.swee@...el.com>
> 
> Add dt-bindings for per channel irq.
> 
> Signed-off-by: Rohan G Thomas <rohan.g.thomas@...el.com>
> Signed-off-by: Swee Leong Ching <leong.ching.swee@...el.com>
> ---
>  .../devicetree/bindings/net/snps,dwmac.yaml   | 24 +++++++++++++------
>  1 file changed, 17 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> index 5c2769dc689a..e72dded824f4 100644
> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> @@ -103,17 +103,27 @@ properties:
>  
>    interrupts:
>      minItems: 1
> -    items:
> -      - description: Combined signal for various interrupt events
> -      - description: The interrupt to manage the remote wake-up packet detection
> -      - description: The interrupt that occurs when Rx exits the LPI state
> +    maxItems: 19
>  
>    interrupt-names:
>      minItems: 1
> +    maxItems: 19
>      items:
> -      - const: macirq
> -      - enum: [eth_wake_irq, eth_lpi]
> -      - const: eth_lpi
> +      oneOf:
> +        - description: Combined signal for various interrupt events
> +          const: macirq
> +        - description: The interrupt to manage the remote wake-up packet detection
> +          const: eth_wake_irq
> +        - description: The interrupt that occurs when Rx exits the LPI state
> +          const: eth_lpi
> +        - description: DMA Tx per-channel interrupt
> +          pattern: '^dma_tx[0-7]?$'
> +        - description: DMA Rx per-channel interrupt
> +          pattern: '^dma_rx[0-7]?$'
> +
> +    allOf:
> +      - contains:
> +          const: macirq

In order to restore the v1 discussion around this change, here is my
comment copied from there:

> As Rob correctly noted it's also better to make sure that 'macirq' is placed first
> in the array. So instead of the constraint above I guess the next one would
> make sure both the array has 'macirq' name and it's the first item:
>
> allOf:
>   - maxItems: 34
>     items:
>       - const: macirq

Leong said it didn't work:
https://lore.kernel.org/netdev/CH0PR11MB54904615B45E521DE6B1A7B3CF61A@CH0PR11MB5490.namprd11.prod.outlook.com/

Rob, Krzysztof, Conor could you please clarify whether this change is ok the
way it is or it would be better to preserve the stricter constraint
and fix the DT-schema validation tool somehow?

-Serge(y)

>  
>    clocks:
>      minItems: 1
> -- 
> 2.34.1
> 
>