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From: Krzysztof Kozlowski <krzk@kernel.org>
To: Arun Muthusamy <arun.muthusamy@gaisler.com>
Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	mkl@pengutronix.de, mailhol@kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-can@vger.kernel.org
Subject: Re: [PATCH 02/10] dt-bindings: net: can: grcan: Convert GRCAN CAN controllers binding from txt to YAML
Date: Thu, 18 Dec 2025 11:10:56 +0100	[thread overview]
Message-ID: <f57ccf4a-b43d-4de2-b745-3591cb18e730@kernel.org> (raw)
In-Reply-To: <0c4a38e1-29e9-4892-ad99-539dd889d4a8@gaisler.com>

On 24/11/2025 16:26, Arun Muthusamy wrote:
> Thank you for the review. I  wish to clarify a few details concerning 
> the DT binding and seek your guidance on the preferred approach
> 
> On 11/18/2025 12:01 PM, Krzysztof Kozlowski wrote:
>>>> +      Fallback on node name matching for systems that don't provide compatible.
>>>> +    enum:
>>>> +      - GAISLER_GRCAN
>>>> +      - 01_03d
>>>> +      - GAISLER_GRHCAN
>>>> +      - "01_034"
>>> This does not really work. Are you really defining here "name" property?
> 
> PROM-based LEON systems identify uses the "node name" property, while 
> DTS-based NOEL systems use proper "|compatible"| strings.
> 

No, either node name or name property. There is no such thing as node
name property.

> The updated schema now uses:
> properties:
>    $nodename:
>      pattern: "^(GAISLER_GRCAN|01_03d|GAISLER_GRHCAN|01_034)$"

So node name?

Anyway, names are wrong - they do not follow DTS coding style at all.
You need to come rationale why incorrect style has to be used.

> 
>    compatible:
>      enum:
>        - gaisler,grcan
>        - gaisler,grcanfd
> 
> Please advice me if its the preferred  is a preferred way to describe or 
> structure this dual-matching approach.

Nothing above usually - you need specific device compatible. I also do
not know what is the difference between one and another - in terms of
hardware (don't mention drivers please).


Best regards,
Krzysztof

  parent reply	other threads:[~2025-12-18 10:11 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-18  9:21 [PATCH 00/10] can: grcan: Enhance driver with CANFD Support and Improvements Arun Muthusamy
2025-11-18  9:21 ` [PATCH 01/10] dt-bindings: Add vendor prefix for Frontgrade Gaisler AB Arun Muthusamy
2025-11-18 10:56   ` Krzysztof Kozlowski
2025-11-18  9:21 ` [PATCH 02/10] dt-bindings: net: can: grcan: Convert GRCAN CAN controllers binding from txt to YAML Arun Muthusamy
2025-11-18 11:01   ` Krzysztof Kozlowski
2025-11-24  9:37     ` Arun Muthusamy
2025-11-24 11:28       ` Krzysztof Kozlowski
2025-12-11 10:11     ` Arun Muthusamy
2025-12-18 10:12       ` Krzysztof Kozlowski
     [not found]     ` <0c4a38e1-29e9-4892-ad99-539dd889d4a8@gaisler.com>
2025-12-18 10:10       ` Krzysztof Kozlowski [this message]
2025-11-18  9:21 ` [PATCH 03/10] MAINTAINERS: Add entry for GRCAN CAN network driver Arun Muthusamy
2025-11-18  9:21 ` [PATCH 04/10] can: grcan: Add clock handling Arun Muthusamy
2025-11-18 11:01   ` Krzysztof Kozlowski
2025-11-24  9:46     ` Arun Muthusamy
2025-11-24 11:10       ` Krzysztof Kozlowski
2025-11-18  9:21 ` [PATCH 05/10] can: grcan: add FD capability detection and nominal bit-timing Arun Muthusamy
2025-11-21 10:52   ` Marc Kleine-Budde
2025-11-18  9:21 ` [PATCH 06/10] can: grcan: optimize DMA by 32-bit accesses Arun Muthusamy
2025-11-21 11:00   ` Marc Kleine-Budde
2025-11-18  9:21 ` [PATCH 07/10] can: grcan: set DMA mask for GRCAN and GRCANFD to 32-bit Arun Muthusamy
2025-11-21 12:46   ` Marc Kleine-Budde
2025-11-18  9:21 ` [PATCH 08/10] can: grcan: Add saving and restoring of CAN FD baud-rate registers Arun Muthusamy
2025-11-21 12:50   ` Marc Kleine-Budde
2025-12-11  9:13     ` Arun Muthusamy
2025-12-11 11:37       ` Marc Kleine-Budde
2025-11-18  9:21 ` [PATCH 09/10] can: grcan: Reserve space between cap and next register to align with address layout Arun Muthusamy
2025-11-18  9:21 ` [PATCH 10/10] can: grcan: Add CANFD support alongside legacy CAN Arun Muthusamy
2025-11-21 13:03   ` Marc Kleine-Budde

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