linux-kernel - RE: [EXT] Re: [PATCH v2 01/12] fix: arm64: dts: replace wrong regulator on ap emmc

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Date:   Thu, 11 Feb 2021 13:57:25 +0000
From:   Kostya Porotchkin <kostap@...vell.com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Jon Nettleton <jon@...id-run.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "sebastian.hesselbarth@...il.com" <sebastian.hesselbarth@...il.com>,
        "gregory.clement@...tlin.com" <gregory.clement@...tlin.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "mw@...ihalf.com" <mw@...ihalf.com>,
        "jaz@...ihalf.com" <jaz@...ihalf.com>,
        Nadav Haklai <nadavh@...vell.com>,
        Stefan Chulski <stefanc@...vell.com>,
        "Ben Peled" <bpeled@...vell.com>
Subject: RE: [EXT] Re: [PATCH v2 01/12] fix: arm64: dts: replace wrong
 regulator on ap emmc


> ----------------------------------------------------------------------
> On Wed, Feb 10, 2021 at 04:09:38PM +0200, kostap@...vell.com wrote:
> > From: Konstantin Porotchkin <kostap@...vell.com>
> >
> > Replace wrong regulator in AP0 eMMC definition on MacchiatoBIN board
> > with 3.3V regulator.
> > The MacchiatoBIN board has no 1.8V regulator connected to AP0 eMMC
> > (ap0_sdhci0) interface.
> 
> There seems to be some variability between Macchiatobin versions according
> to the schematics.
> 
> The VDDO_H supply is connected to the eMMC VCCQ pins, and is also
> connected to the AP_VDDO_H pins. It is wired to the 1.8V regulator on rev 1.1
> schematics, but hard-wired to the 3.3V regulator on rev 1.3 schematics.
> 
> This needs clarification from SolidRun before the patch can be accepted - was
> VDDO_H ever wired to the 1.8V regulator on production hardware?
> 
[KP] I will try to find a relevant contact in SolidRun for get this issue clarified.

Kosta
> --
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