linux-kernel - Re: [PATCH v5 12/20] ARM: dts: uniphier: Add generic compatible string for I2C EEPROM

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Date:   Wed, 7 Jun 2017 14:42:43 +0200
From:   Javier Martinez Canillas <javier@...hile0.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        Rob Herring <robh@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v5 12/20] ARM: dts: uniphier: Add generic compatible
 string for I2C EEPROM

Hello Masahiro,

On Wed, Jun 7, 2017 at 3:10 AM, Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:

[snip]

>>>
>>> Why didn't you touch
>>> arch/arm/boot/dts/uniphier-ref-daughter.dtsi ?
>>>
>>
>> Because the compatible string "microchip,24lc128" used by the I2C
>> EEPROM node on that DTS is not supported by the
>> drivers/misc/eeprom/at24.c driver (in fact the only occurrence for
>> 24lc128 I see is in that DTS).
>>
>> Maybe is a typo and it should be "microchip,24c128" instead ?
>
> I do not think so.
> I consulted a board developer.
>
> I also see 24LC128 on Microchip web site:
> http://www.microchip.com/wwwproducts/en/24LC128
>

Ah Ok, it was just a wild guess I did since the at24 driver didn't
have support for this chip variant.
My point stands though, this is an unrelated change to the goal of
this patch-series and should be fixed separately.

Best regards,
Javier