linux-kernel - Re: [PATCH v5 04/12] dt-binding: gce: add binding for gce event property

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Date:   Fri, 10 May 2019 11:27:37 +0800
From:   Bibby Hsieh <bibby.hsieh@...iatek.com>
To:     CK Hu <ck.hu@...iatek.com>
CC:     Jassi Brar <jassisinghbrar@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Daniel Kurtz <djkurtz@...omium.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>,
        Sascha Hauer <kernel@...gutronix.de>,
        "Philipp Zabel" <p.zabel@...gutronix.de>,
        Nicolas Boichat <drinkcat@...omium.org>,
        "YT Shen" <yt.shen@...iatek.com>,
        Daoyuan Huang <daoyuan.huang@...iatek.com>,
        Jiaguang Zhang <jiaguang.zhang@...iatek.com>,
        Dennis-YC Hsieh <dennis-yc.hsieh@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        <ginny.chen@...iatek.com>, <kendrick.hsu@...iatek.com>,
        Frederic Chen <Frederic.Chen@...iatek.com>
Subject: Re: [PATCH v5 04/12] dt-binding: gce: add binding for gce event
 property

Hi, CK,

On Wed, 2019-05-08 at 13:10 +0800, CK Hu wrote:
> Hi, Bibby:
> 
> On Tue, 2019-05-07 at 16:13 +0800, Bibby Hsieh wrote:
> > Client hardware would send event to GCE hardware,
> > mediatek,gce-event-names and mediatek,gce-events
> > can be used to present the event.
> > 
> > Signed-off-by: Bibby Hsieh <bibby.hsieh@...iatek.com>
> > ---
> >  Documentation/devicetree/bindings/mailbox/mtk-gce.txt | 9 +++++++--
> >  1 file changed, 7 insertions(+), 2 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
> > index 8fd9479bc9f6..76491f194c56 100644
> > --- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
> > +++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
> > @@ -35,6 +35,9 @@ Required properties for a client device:
> >  Optional propertier for a client device:
> >  - mediatek,gce-client-reg: u32, specify the sub-system id which is corresponding
> >    to the register address.
> > +- mediatek,gce-event-names: the event name can be defined by user.
> 
> gce-event is like an interrupt from client hardware to GCE hardware, we
> do not give a name to an interrupt, so do we need to give a name for
> gce-event?
> 

Yes, we need to know the name of gce-ecent.
The name can help users to figure out the problems when GCE meet the
event time out errors.


> Regards,
> CK
> 
> > +- mediatek,gce-events: u32, the event number defined in
> > +  'dt-bindings/gce/mt8173-gce.h' or 'dt-binding/gce/mt8183-gce.h'.
> >  
> >  Some vaules of properties are defined in 'dt-bindings/gce/mt8173-gce.h'
> >  or 'dt-binding/gce/mt8183-gce.h'. Such as sub-system ids, thread priority, event ids.
> > @@ -57,8 +60,10 @@ Example for a client device:
> >  		compatible = "mediatek,mt8173-mmsys";
> >  		mboxes = <&gce 0 CMDQ_THR_PRIO_LOWEST 1>,
> >  			 <&gce 1 CMDQ_THR_PRIO_LOWEST 1>;
> > -		mutex-event-eof = <CMDQ_EVENT_MUTEX0_STREAM_EOF
> > -				CMDQ_EVENT_MUTEX1_STREAM_EOF>;
> > +		mediatek,gce-event-names = "rdma0_sof",
> > +					   "rsz0_sof";
> > +		mediatek,gce-events = <CMDQ_EVENT_MDP_RDMA0_SOF>,
> > +				      <CMDQ_EVENT_MDP_RSZ0_SOF>;
> >  		mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>,
> >  					  <&gce SUBSYS_1401XXXX 0x2000 0x100>;
> >  		...
> 
> 

-- 
Bibby