Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   "Alim Akhtar" <alim.akhtar@samsung.com>
To:     =?utf-8?Q?'Pawe=C5=82_Chmiel'?= <pawel.mikolaj.chmiel@gmail.com>,
        <robh+dt@kernel.org>, <devicetree@vger.kernel.org>,
        <linux-scsi@vger.kernel.org>
Cc:     <krzk@kernel.org>, <avri.altman@wdc.com>,
        <martin.petersen@oracle.com>, <kwmad.kim@samsung.com>,
        <stanley.chu@mediatek.com>, <cang@codeaurora.org>,
        <linux-samsung-soc@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
In-Reply-To: <1182150aff8140a82af17979a09c81676c719e2f.camel@gmail.com>
Subject: RE: [PATCH v4 5/5] arm64: dts: Add node for ufs exynos7
Date:   Sat, 4 Apr 2020 23:45:24 +0530
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        <20200327170638.17670-6-alim.akhtar@samsung.com>
        <ac67cfc3736cf50c716b823a59af878d59b7198f.camel@gmail.com>
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Hi Pawel,

> -----Original Message-----
> From: Pawe=C5=82=20Chmiel=20<pawel.mikolaj.chmiel=40gmail.com>=0D=0A>=20S=
ent:=2003=20April=202020=2022:22=0D=0A>=20To:=20Alim=20Akhtar=20<alim.akhta=
r=40samsung.com>;=20robh+dt=40kernel.org;=0D=0A>=20devicetree=40vger.kernel=
.org;=20linux-scsi=40vger.kernel.org=0D=0A>=20Cc:=20krzk=40kernel.org;=20av=
ri.altman=40wdc.com;=20martin.petersen=40oracle.com;=0D=0A>=20kwmad.kim=40s=
amsung.com;=20stanley.chu=40mediatek.com;=0D=0A>=20cang=40codeaurora.org;=
=20linux-samsung-soc=40vger.kernel.org;=20linux-arm-=0D=0A>=20kernel=40list=
s.infradead.org;=20linux-kernel=40vger.kernel.org=0D=0A>=20Subject:=20Re:=
=20=5BPATCH=20v4=205/5=5D=20arm64:=20dts:=20Add=20node=20for=20ufs=20exynos=
7=0D=0A>=20=0D=0A>=20Hi=20Alim=0D=0A>=20=0D=0A>=20Looking=20at=20vendor=20s=
ources,=20my=20device=20is=20using=20the=20same=20gpios=20for=0D=0A>=20urfs=
_rst_n=20and=20ufs_refclk_out=20like=20Espresso=20(with=20one=20difference=
=20-=0D=0A>=20ufs_rst_n=20shouldn't=20be=20pulled=20up).=0D=0A>=20=0D=0A>=
=20About=20regulators=20(it=20would=20be=20easier=20if=20dts=20would=20have=
=20all=20regulators).=0D=0A>=20It's=20also=20using=20s2mps15=20as=20Espress=
o,=20but=20it=20vendor=20dts=20had=20only=208=20(of=0D=0A>=2010=20possible=
=20bucks,=20one=20missing=20was=20for=20UFS)=20and=2014=20ldos=20(of=2027=
=0D=0A>=20possible),=20where=20almost=20all=20rails=20are=20connected=20to=
=20something.=0D=0A>=20=0D=0A>=20I'm=20wondering=20how=20it's=20working=20o=
n=20Espresso,=20because=20when=20adding=20correct=0D=0A>=20regulators=20for=
=20ufs=20(vccq=20=3D=20buck10=20from=20s2mps15,=20always=20enabled=20for=0D=
=0A>=20testing=20plus=20vccq2=20and=20vccq=20=3D=20two=20regulators=20enabl=
ed=20by=20one=20gpio,=0D=0A>=20enabled=20at=20boot=20by=20firmware),=20ufs=
=20wasn't=20still=20working=20because=20it=20was=0D=0A>=20then=20failing=20=
at=20defer=20probe=20(s2mps15=20was=20probed=20after=20ufs)=0D=0A>=20=0D=0A=
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------=_NextPart_000_0001_01D60ADB.1FA12B60
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