linux-kernel - Re: [PATCH] spi: spidev: Add compatible for external SPI ports on Kontron boards

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Message-ID: <ce532200-a18c-d618-7f73-6f6ac8f8522e@kontron.de>
Date:   Wed, 15 Jul 2020 15:48:37 +0200
From:   Frieder Schrempf <frieder.schrempf@...tron.de>
To:     Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH] spi: spidev: Add compatible for external SPI ports on
 Kontron boards

On 15.07.20 15:10, Mark Brown wrote:
> On Wed, Jul 15, 2020 at 01:45:51PM +0200, Frieder Schrempf wrote:
>> On 15.07.20 13:36, Mark Brown wrote:
> 
>>> Hey, I proposed other solutions you didn't want to implement!
> 
>> Right, but you have to admit that the other solutions turned out to be
>> rather out of scope for someone like me who merely wants to use the spidev
>> driver.
> 
>> But I don't blame you. I'm now having a better idea of how things are (or
>> aren't) supposed to look like. So thanks for your patience!
> 
> I'm not sure platforms like this are a great fit for DT TBH - the
> trouble with DT is that it turns things into ABIs regardless of if it's
> really a finished thing, platform data based systems were a lot more
> flexible here.

I see your point. Still it seems like the overlays would provide a 
sufficient alternative in matters of flexibility. Raspberry Pi uses it 
for years, which made me assume that some generic loading API is 
available. But it seems like everything is RPi-specific and downstream.