linux-kernel - Re: [PATCH v2 3/3] dt-bindings: eeprom: at24: Add at24,mac02e4 and at24,mac02e6

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Date: Tue, 25 Jun 2024 17:15:01 +0100
From: Conor Dooley <conor@...nel.org>
To: Andrei.Simion@...rochip.com
Cc: robh@...nel.org, brgl@...ev.pl, krzk+dt@...nel.org, conor+dt@...nel.org,
	Nicolas.Ferre@...rochip.com, alexandre.belloni@...tlin.com,
	claudiu.beznea@...on.dev, arnd@...db.de, gregkh@...uxfoundation.org,
	linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 3/3] dt-bindings: eeprom: at24: Add at24,mac02e4 and
 at24,mac02e6

On Tue, Jun 25, 2024 at 07:33:18AM +0000, Andrei.Simion@...rochip.com wrote:
> On 24.06.2024 22:49, Rob Herring wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > 
> > On Fri, Jun 21, 2024 at 03:13:40PM +0300, Andrei Simion wrote:
> >> Update regex check and add pattern to match both EEPROMs.
> > 
> > The subject is wrong as 'at24' is not the vendor.
> >
> 
> My mistake. It needs to be atmel,24mac02e4 and atmel,24mac02e6.
> 
> >>
> >> Signed-off-by: Andrei Simion <andrei.simion@...rochip.com>
> >> ---
> >> v1 -> v2:
> >> - change patter into "^atmel,(24(c|cs|mac)[a-z0-9]+|spd)$" to keep simpler
> >> ---
> >>  Documentation/devicetree/bindings/eeprom/at24.yaml | 10 +++++++---
> >>  1 file changed, 7 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/Documentation/devicetree/bindings/eeprom/at24.yaml b/Documentation/devicetree/bindings/eeprom/at24.yaml
> >> index 3c36cd0510de..f914ca37ceea 100644
> >> --- a/Documentation/devicetree/bindings/eeprom/at24.yaml
> >> +++ b/Documentation/devicetree/bindings/eeprom/at24.yaml
> >> @@ -18,7 +18,7 @@ select:
> >>    properties:
> >>      compatible:
> >>        contains:
> >> -        pattern: "^atmel,(24(c|cs|mac)[0-9]+|spd)$"
> >> +        pattern: "^atmel,(24(c|cs|mac)[a-z0-9]+|spd)$"
> >>    required:
> >>      - compatible
> >>
> >> @@ -37,8 +37,8 @@ properties:
> >>        - allOf:
> >>            - minItems: 1
> >>              items:
> >> -              - pattern: "^(atmel|catalyst|microchip|nxp|ramtron|renesas|rohm|st),(24(c|cs|lc|mac)[0-9]+|spd)$"
> >> -              - pattern: "^atmel,(24(c|cs|mac)[0-9]+|spd)$"
> >> +              - pattern: "^(atmel|catalyst|microchip|nxp|ramtron|renesas|rohm|st),(24(c|cs|lc|mac)[a-z0-9]+|spd)$"
> >> +              - pattern: "^atmel,(24(c|cs|mac)[a-z0-9]+|spd)$"
> > 
> > Are these devices available from multiple vendors? If not, I think I'd
> > add specific compatible strings with the right vendor rather than adding
> > to this pattern. It's rather loosely defined because that's what was in
> > use already.
> >
> 
> So, would you like me to keep how it was before:  "^atmel,(24(c|cs|mac)[0-9]+|spd)$" and  "^(atmel|catalyst|microchip|nxp|ramtron|renesas|rohm|st),(24(c|cs|lc|mac)[0-9]+|spd)$"
> and to add only: 
> - items:
>  pattern: mac02e4$
> - items:
>  pattern: mac02e6$
> ?
> 
> Or would you like me to add to "the special cases that don't conform to the above pattern. Each requires a standard at24 model as fallback."  area?

I think the suggestion is to explicitly add these two devices down at the
bottom instead of adding to the regex. The first hunk I think in this
patch needs to remain a regex.

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