linux-kernel - Re: [PATCH v2 2/9] dt-bindings: mailbox: Add property for CMDQ secure driver

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Message-ID: <e85331683751ad52fe34f66b11286ed49c10e301.camel@mediatek.com>
Date:   Tue, 31 Oct 2023 02:34:13 +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 2/9] dt-bindings: mailbox: Add property for CMDQ secure
 driver

Hi Krzysztof,

On Sat, 2023-10-28 at 11:10 +0200, Krzysztof Kozlowski wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  On 24/10/2023 18:37, Jason-JH Lin (林睿祥) wrote:
> > Hi Krzysztof,
> > 
> > Thanks for the reviews.
> > 
> > On Mon, 2023-10-23 at 09:49 +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:
> >>> Add mboxes to define a GCE loopping thread as a secure irq
> handler.
> >>> Add mediatek,gce-events to define a GCE event siganl sent from
> CMDQ
> >>> TA driver in secure world as a secure irq.
> >>>
> >>> These 2 properties are required for CMDQ secure driver.
> >>>
> >>> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> >>> ---
> >>>  .../bindings/mailbox/mediatek,gce-mailbox.yaml         | 10
> >> ++++++++++
> >>>  1 file changed, 10 insertions(+)
> >>>
> >>> diff --git
> >> a/Documentation/devicetree/bindings/mailbox/mediatek,gce-
> mailbox.yaml 
> >> b/Documentation/devicetree/bindings/mailbox/mediatek,gce-
> mailbox.yaml
> >>> index cef9d7601398..65fb93bb53b6 100644
> >>> --- a/Documentation/devicetree/bindings/mailbox/mediatek,gce-
> >> mailbox.yaml
> >>> +++ b/Documentation/devicetree/bindings/mailbox/mediatek,gce-
> >> mailbox.yaml
> >>> @@ -49,6 +49,16 @@ properties:
> >>>      items:
> >>>        - const: gce
> >>>  
> >>> +  mboxes:
> >>> +    maxItems: 1
> >>> +
> >>> +  mediatek,gce-events:
> >>> +    description:
> >>> +      The event id which is mapping to the specific hardware
> event
> >> signal
> >>> +      to gce. The event id is defined in the gce header
> >>> +      include/dt-bindings/gce/<chip>-gce.h of each chips.
> >>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> >>
> >> Nothing improved.
> >>
> >> This is a friendly reminder during the review process.
> >>
> >> It seems my previous comments were not fully addressed. Maybe my
> > 
> > Sorry, I didn't find your comments in the previous patch here:
> > 
> > 
> https://patchwork.kernel.org/project/linux-mediatek/patch/20230918192204.32263-2-jason-jh.lin@mediatek.com/
> > 
> > Could you please comment again?
> > Thank you very much.
> 
> Please implement Rob's feedback.
> > 
> > 
> > And I do see Rob's comment, so I sync the mediatek,gce-events
> property
> > definition from other yaml where used this property.
> > 
> > Should I also modify the definition of mediatek,gce-events property
> to
> > reference to mediatek,gce-mailbox.yaml for other yaml?
> 
> You need single definition in one of the bindings or in shared
> bindings.
> Depends on the users of this property.
> 

Because this property is related to GCE HW.
I think the definition should be defined in mediatek,gce-mailbox.yaml.

So I should have a single definition in mediatek,gce-mailbox.yaml:
mediatek,gce-events:
  description:
    The event id which is mapping to the specific hardware event signal
    to gce. The event id is defined in the gce header
    include/dt-bindings/gce/<chip>-gce.h of each chips.
  $ref: /schemas/types.yaml#/definitions/uint32-array


And other bindings:
Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml#L56
D
ocumentation/devicetree/bindings/media/mediatek,mdp3-rdma.yaml#L41
Documentation/devicetree/bindings/media/mediatek,mdp3-rsz.yaml#L37
Documentation/devicetree/bindings/media/mediatek,mdp3-wrot.yaml#L37
should modify the definition to:
mediatek,gce-events:
  description:
    Reference to
Documentation/devicetree/bindings/mailbox/mediatek,gce-mailbox.yaml.


Is that right?

Regards,
Jason-JH.Lin

> 
> Best regards,
> Krzysztof
>