linux-kernel - Re: [PATCH v2 2/6] dt-bindings: trivial-devices: add arduino spi mcu interface

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Message-ID: <403e924c-e331-4714-8ddb-738245f5b7e2@kernel.org>
Date: Fri, 14 Nov 2025 14:00:31 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Riccardo Mereu <r.mereu.kernel@...uino.cc>, andersson@...nel.org,
 konradybcio@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, broonie@...nel.org
Cc: linux@...ck-us.net, Jonathan.Cameron@...wei.com, wenswang@...h.net,
 naresh.solanki@...ements.com, michal.simek@....com, nuno.sa@...log.com,
 chou.cosmo@...il.com, grantpeltier93@...il.com, eajames@...ux.ibm.com,
 farouk.bouabid@...rry.de, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-spi@...r.kernel.org, m.facchin@...uino.cc,
 Riccardo Mereu <r.mereu@...uino.cc>
Subject: Re: [PATCH v2 2/6] dt-bindings: trivial-devices: add arduino spi mcu
 interface

On 14/11/2025 13:58, Krzysztof Kozlowski wrote:
> On 14/11/2025 13:18, Riccardo Mereu wrote:
>> Add spidev item in order to describe in Arduino boards one of the
> 
> Please drop "spidev item", because there is no such hardware as spidev.
> It's Linuxism and its appearance in bindings only creates confusion for
> further submissions (which are rejected...).
> 
> Please explain here the hardware, which in this context is the
> connection between Arduino and Linux. You received comments that this is
> not a trivial device, so please bring the hardware description which
> will prove it is indeed a trivial device. Why don't you need supplies
> for example?

... plus some hardware details on that MCU, e.g. its processor or to
which SPI controller it is wired on the board.

> 
> Placeholders for spidev are not allowed, so you have entire commit msg
> to convince us that you are doing something else.
> 
> I already asked for that so I won't be repeating again at v3.
> 
> 
> Best regards,
> Krzysztof


Best regards,
Krzysztof