linux-kernel - Re: [PATCH v2 07/11] memory: mtk-smi: Add smi sub common support

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Date:   Thu, 22 Jul 2021 14:38:14 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Ikjoon Jang <ikjn@...omium.org>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Krzysztof Kozlowski" <krzk@...nel.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Tomasz Figa <tfiga@...omium.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <youlin.pei@...iatek.com>,
        <anan.sun@...iatek.com>, <ming-fan.chen@...iatek.com>,
        <yi.kuo@...iatek.com>, <anthony.huang@...iatek.com>
Subject: Re: [PATCH v2 07/11] memory: mtk-smi: Add smi sub common support

Hi Ikjoon,

Thanks very much for your help reviewing..

On Wed, 2021-07-21 at 19:43 +0800, Ikjoon Jang wrote:
> On Thu, Jul 15, 2021 at 8:25 PM Yong Wu <yong.wu@...iatek.com> wrote:
> >
> > In mt8195, there are some larbs connect with the smi-sub-common, then
> > connect with smi-common.
> 
> Not critical but I suggest to describe what is smi-sub-common.
> e.g. "some larbs are not directly connected to smi-common,
> they are connected to smi-sub-common which is a bridge(?) interface to..."

OK. I will add some brief description about this sub-common in next
version.

> 
> >
> > Before we create device link between smi-larb with smi-common. If we have
> > sub-common, we should use device link the smi-larb and smi-sub-common,
> > then use device link between the smi-sub-common with smi-common. This is
> > for enabling clock/power automatically.
> >
> > Move the device link code to a new interface for reusing.
> >
> > There is no SW extra setting for smi-sub-common.
> >
> > Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> 
> Reviewed-by: Ikjoon Jang <ikjn@...omium.org>

Thanks.

> 
> > ---
> >  drivers/memory/mtk-smi.c | 75 +++++++++++++++++++++++++++-------------
> >  1 file changed, 51 insertions(+), 24 deletions(-)
> >
> > diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
> > index e68cbb51dd12..ee49bb50f5f5 100644
> > --- a/drivers/memory/mtk-smi.c
> > +++ b/drivers/memory/mtk-smi.c
> > @@ -60,7 +60,8 @@

[snip..]