RE: [PATCH] arm64: dts: ls1028a: make the eMMC and SD card controllers use fixed indices

[Y.b. Lu]

Hi Vladimir,

> -----Original Message-----
> From: Vladimir Oltean <vladimir.oltean@xxxxxxx>
> Sent: Friday, November 20, 2020 5:30 PM
> To: Y.b. Lu <yangbo.lu@xxxxxxx>
> Cc: Shawn Guo <shawnguo@xxxxxxxxxx>; Leo Li <leoyang.li@xxxxxxx>; Rob
> Herring <robh+dt@xxxxxxxxxx>; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; Adrian Hunter <adrian.hunter@xxxxxxxxx>; Ulf
> Hansson <ulf.hansson@xxxxxxxxxx>; linux-mmc@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; Ashish Kumar <ashish.kumar@xxxxxxx>;
> Michael Walle <michael@xxxxxxxx>
> Subject: Re: [PATCH] arm64: dts: ls1028a: make the eMMC and SD card
> controllers use fixed indices
> 
> On Fri, Nov 20, 2020 at 02:04:02AM +0000, Y.b. Lu wrote:
> > Hi Vladimir,
> >
> > I have already upstreamed a patch for all affected layerscape boards.
> >
> https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git/commit/?
> h=imx/dt64&id=342ab37ecaf8c1b10dd3ca9a1271db29a6af0705
> >
> > Please check whether it works for you.
> 
> Thanks, one can tell that I haven't done my due diligence of checking
> Shawn's tree first. I'll cherry-pick that patch and carry on with my
> work.
> 
> However, the fact still remains that Michael has expressed his opinion
> regarding mmcblk0 vs mmcblk1. Do you think that we could make the
> aliases a per-board option instead of per-SoC? Consider that there might
> even be boards that only use SD card. It would be strange for the block
> device in that case to be called /dev/mmcblk1.

I don't think it's a problem in board dts to define board specific thing, like re-defining alias, and disabling any IP it not using.
Thanks.