linux-kernel - Re: [PATCH v2 1/9] dt-bindings: gce: mt8195: Add CMDQ_SYNC_TOKEN_SECURE_THR

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Date:   Wed, 25 Oct 2023 06:26:42 +0000
From:   Jason-JH Lin (林睿祥) 
        <Jason-JH.Lin@...iatek.com>
To:     "jassisinghbrar@...il.com" <jassisinghbrar@...il.com>,
        "krzysztof.kozlowski@...aro.org" <krzysztof.kozlowski@...aro.org>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Singo Chang (張興國) 
        <Singo.Chang@...iatek.com>,
        Johnson Wang (王聖鑫) 
        <Johnson.Wang@...iatek.com>,
        Jason-ch Chen (陳建豪) 
        <Jason-ch.Chen@...iatek.com>,
        Shawn Sung (宋孝謙) 
        <Shawn.Sung@...iatek.com>,
        Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>,
        "jkardatzke@...gle.com" <jkardatzke@...gle.com>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>
Subject: Re: [PATCH v2 1/9] dt-bindings: gce: mt8195: Add
 CMDQ_SYNC_TOKEN_SECURE_THR_EOF event id

Hi Krzysztof,

Thanks for the reviews.

On Mon, 2023-10-23 at 09:47 +0200, Krzysztof Kozlowski wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  On 23/10/2023 06:37, Jason-JH.Lin wrote:
> > CMDQ_SYNC_TOKEN_SECURE_THR_EOF is used as secure irq to notify CMDQ
> > driver in the normal world that GCE secure thread has completed a
> task
> > in thee secure world.
> 
> s/thee/the/
> 
> > 
> > Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> > ---
> 
> This is a new patch, so you must mention it in the changelog. There
> is
> nothing in the changelog saying about this new patch.
> 
> 
> >  include/dt-bindings/gce/mt8195-gce.h | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/include/dt-bindings/gce/mt8195-gce.h b/include/dt-
> bindings/gce/mt8195-gce.h
> > index dcfb302b8a5b..9f99da3363b9 100644
> > --- a/include/dt-bindings/gce/mt8195-gce.h
> > +++ b/include/dt-bindings/gce/mt8195-gce.h
> > @@ -809,4 +809,10 @@
> >  /* end of hw event */
> >  #define CMDQ_MAX_HW_EVENT1019
> >  
> > +/*
> > + * Notify normal CMDQ there are some secure task done,
> > + * this token sync with secure world.
> > + */
> > +#define CMDQ_SYNC_TOKEN_SECURE_THR_EOF980
> 
> Why is this below 1019? Your driver calls it also even, so is this an
> event or not?
> 
> Your driver does not use this value, so does it mean FW uses it?

I just want to separate this kind of event (sw token) from the HW
event. So I define it after CMDQ_MAX_HW_EVENT.

But from the perspective of GCE event signal, there is no difference.
So I'll move it to the correct position.

Regards,
Jason-JH.Lin

> 
> Best regards,
> Krzysztof
>