[EXT] Re: [PATCH v4 03/16] i.MX8M: crypto: updated device tree for supporting DM in SPL

Gaurav Jain gaurav.jain at nxp.com
Mon Nov 15 08:09:41 CET 2021

Hello Michael

> -----Original Message-----
> From: Michael Walle <michael at walle.cc>
> Sent: Monday, November 8, 2021 2:29 PM
> To: ZHIZHIKIN Andrey <andrey.zhizhikin at leica-geosystems.com>
> Cc: Gaurav Jain <gaurav.jain at nxp.com>; Adam Ford <aford173 at gmail.com>;
> U-Boot Mailing List <u-boot at lists.denx.de>; Stefano Babic <sbabic at denx.de>;
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> Glass <sjg at chromium.org>; Priyanka Jain <priyanka.jain at nxp.com>; Ye Li
> <ye.li at nxp.com>; Horia Geanta <horia.geanta at nxp.com>; Ji Luo
> <ji.luo at nxp.com>; Franck Lenormand <franck.lenormand at nxp.com>; Silvano Di
> Ninno <silvano.dininno at nxp.com>; Sahil Malhotra <sahil.malhotra at nxp.com>;
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> Subject: Re: [EXT] Re: [PATCH v4 03/16] i.MX8M: crypto: updated device tree for
> supporting DM in SPL
> Caution: EXT Email
> Am 2021-11-08 09:48, schrieb ZHIZHIKIN Andrey:
> ..
> >> > Disabling the JR0 node in the kernel makes this error go away, and
> >> > decreases the JR count to 2 which can be observed in the NXP vendor kernel.
> >> >
> >> > I suggest you to extract the node disabling from this patch and send it to
> Kernel.
> >> > Once accepted in upstream - this change would be picked up by the
> >> > U-Boot at next DTB re-sync.
> No. Please don't disable the node in the kernel device tree. IMHO TF-A (or
> whoever is using the job ring) is optional. So either u-boot should disable it,
> either statically by -u-boot.dtsi (but please _per_
> board) or at runtime by fixing up the device tree. Another way would be for linux
> to skip probing if its not available. Though I don't know whether this is "the
> ususal way".
> But as Andrey mentioned, any job ring could be taken away. So the -u-boot.dtsi
> method doesn't seem to be that good.

Moved the JR0 disabled code to *-u-boot.dtsi files in version 5 of this patch series.

Gaurav Jain
> -michael

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