linux-kernel - Re: [PATCH] uio: pruss: Deprecate use of this driver

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Message-ID: <CAALWOA8beMzNVma0KCyCCGW1jH0jf-57-fQX4QnZO5Ss7dbJVw@mail.gmail.com>
Date: Tue, 26 Mar 2024 19:18:02 +0100
From: Matthijs van Duin <matthijsvanduin@...il.com>
To: Andrew Davis <afd@...com>
Cc: Robert Nelson <robertcnelson@...il.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jason Kridner <jkridner@...gleboard.org>, 
	Drew Fustini <drew@...gleboard.org>, Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] uio: pruss: Deprecate use of this driver

On Tue, 26 Mar 2024 at 19:02, Andrew Davis <afd@...com> wrote:
>
> On 3/26/24 12:24 PM, Matthijs van Duin wrote:
> > I'll write a more in-depth reply when I have a moment, but right now I'd
> > like to point out that the uio-pruss driver in mainline linux is for the
> > pru subsystem on the freon/primus family of ARM9-based SoCs (OMAP-L1xx /
> > AM17xx / AM18xx / TMS320C674x / DA8xx), which is not currently supported
> > by remoteproc-pru.
> >
>
> I'll wait for your full reply, but a quick note, for those devices listed
> this driver isn't usable either after they all moved to DT. As this driver
> never got a DT port and relies on platform data (which is gone for those
> couple devices).

Ah I wasn't aware of that. But then the reasoning for removal is "we
broke this driver a long time and nobody seems to care enough to fix
it" rather than saying they should use remoteproc, which does not
support these devices.

Matthijs