linux-kernel - Re: [PATCH] arm: dts: omap3: Migrate hsmmc driver to sdhci driver

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Date: Tue, 13 Feb 2024 15:36:22 +0200
From: Tony Lindgren <tony@...mide.com>
To: Adam Ford <aford173@...il.com>
Cc: linux-omap@...r.kernel.org, aford@...conembedded.com,
	Benoît Cousson <bcousson@...libre.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm: dts: omap3: Migrate hsmmc driver to sdhci driver

* Adam Ford <aford173@...il.com> [240213 13:29]:
> On Tue, Feb 13, 2024 at 7:02 AM Tony Lindgren <tony@...mide.com> wrote:
> >
> > * Tony Lindgren <tony@...mide.com> [240213 12:56]:
> > > * Adam Ford <aford173@...il.com> [240213 12:41]:
> > > > The sdhci driver has been around for several years, and it supports
> > > > the OMAP3 family.  Instead of using the older driver, let's finally
> > > > migrate to the newer one.
> > >
> > > I think we also should do these to avoid incomplete conversion:
> > >
> > > - ti,dual-volt property can be dropped
> > >
> > > - ti,non-removable should become non-removable
> 
> I'll do a more comprehensive search for these flags.  When I did my
> testing on the AM3517, I didn't notice these, but I see now that
> others might.  I'll do a multi-patch series to first address the
> multi-block, then  omap3-ldp.dts, then migrate the omap3.dtsi to the
> new driver while dropping the flags, and lastly update the individual
> boards accordingly.  I just have one question below.

OK sounds good to me :)

> > > - ti,omap3-pre-es3-hsmmc probably should not be needed with sdhci
> >
> > Hmm actually we may need to set SDHCI_QUIRK_NO_MULTIBLOCK for
> > compatible ti,omap3-pre-es3-hsmmc.
> 
> Should I update the driver and binding to add  ti,omap3-pre-es3-sdhci
> to set that flag, or should we create a boolean (maybe
> 'ti,sdhci-no-multiblock') to the device tree options for that driver?

Probably best to set up some sdhci generic property for it that then
sets SDHCI_QUIRK_NO_MULTIBLOCK.

Regards,

Tony