linux-kernel - Re: [PATCH v1 01/10] spi: pxa2xx: Drop ACPI_PTR() and of_match

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Date: Tue, 26 Mar 2024 20:12:09 +0000
From: Mark Brown <broonie@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v1 01/10] spi: pxa2xx: Drop ACPI_PTR() and of_match_ptr()

On Tue, Mar 26, 2024 at 10:04:43PM +0200, Andy Shevchenko wrote:

> There is currently a dependency among others PCI || ACPI || COMPILE_TEST

> From the point of view of the real platforms it means that if there is
> a PCI compiled we support PCI devices that use this "platform" driver.
> Similar with ACPI.

> What you want is to hide this in the menuconfig for the irrelevant platforms
> which have PCI _or_ ACPI enabled, correct?

> But if we add x86 dependency to that, it will drop the support for non-x86
> ACPI-based platforms with this device. I have no clue what are those.

Given the history I would be surprised to learn of any platforms that
have used this other than PXA, MMP or x86.  It's possible Intel shipped
the IP directly exposed on a PCI card of some kind but it'd be pretty
surprising given the way it tends to get used and the idiom for PCI
cards, Marvell having done that would be even more surprising.  The x86
uses I'm aware of are integrated into the chipset rather than something
meaingfully separate to the SoC.

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