linux-kernel - RE: [EXT] Re: [v3 1/2] dt/bindings: display: Add optional property node for Mali DP500

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Message-ID: <DB7PR04MB5195A94A64615FF44C0F4442E2A80@DB7PR04MB5195.eurprd04.prod.outlook.com>
Date:   Mon, 19 Aug 2019 02:13:39 +0000
From:   Wen He <wen.he_1@....com>
To:     Rob Herring <robh+dt@...nel.org>
CC:     "linux-devel@...ux.nxdi.nxp.com" <linux-devel@...ux.nxdi.nxp.com>,
        Liviu Dudau <liviu.dudau@....com>,
        Brian Starkey <brian.starkey@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leo Li <leoyang.li@....com>
Subject: RE: [EXT] Re: [v3 1/2] dt/bindings: display: Add optional property
 node for Mali DP500



> -----Original Message-----
> From: Rob Herring <robh+dt@...nel.org>
> Sent: 2019年8月17日 4:09
> To: Wen He <wen.he_1@....com>
> Cc: linux-devel@...ux.nxdi.nxp.com; Liviu Dudau <liviu.dudau@....com>;
> Brian Starkey <brian.starkey@....com>; David Airlie <airlied@...ux.ie>; Daniel
> Vetter <daniel@...ll.ch>; Mark Rutland <mark.rutland@....com>; dri-devel
> <dri-devel@...ts.freedesktop.org>; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org; Leo Li <leoyang.li@....com>
> Subject: [EXT] Re: [v3 1/2] dt/bindings: display: Add optional property node for
> Mali DP500
> 
> Caution: EXT Email
> 
> On Fri, Aug 16, 2019 at 4:14 AM Wen He <wen.he_1@....com> wrote:
> >
> > Add optional property node 'arm,malidp-arqos-value' for the Mali DP500.
> > This property describe the ARQoS levels of DP500's QoS signaling.
> >
> > Signed-off-by: Wen He <wen.he_1@....com>
> > ---
> > change in v3:
> >         - correction the describe of the node
> >
> >  Documentation/devicetree/bindings/display/arm,malidp.txt | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/display/arm,malidp.txt
> b/Documentation/devicetree/bindings/display/arm,malidp.txt
> > index 2f7870983ef1..1f711d32f235 100644
> > --- a/Documentation/devicetree/bindings/display/arm,malidp.txt
> > +++ b/Documentation/devicetree/bindings/display/arm,malidp.txt
> > @@ -37,6 +37,8 @@ Optional properties:
> >
> Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt)
> >      to be used for the framebuffer; if not present, the framebuffer may
> >      be located anywhere in memory.
> > +  - arm,malidp-arqos-high-level: phandle to describing the ARQoS levels of
> DP500's
> > +    QoS signaling.
> 
> The driver is reading a u32... Did you test this?

Sure, actually, here should be use a u32 value....

The older description was correct, sorry, I should be
Correction the example node define...

'integer of u32 value describing the ARQoS levels of DP500's QoS signaling', 

> 
> 
> >
> >
> >  Example:
> > @@ -54,6 +56,7 @@ Example:
> >                 clocks = <&oscclk2>, <&fpgaosc0>, <&fpgaosc1>,
> <&fpgaosc1>;
> >                 clock-names = "pxlclk", "mclk", "aclk", "pclk";
> >                 arm,malidp-output-port-lines = /bits/ 8 <8 8 8>;
> > +               arm,malidp-arqos-high-level = <&rqosvalue>;
					arm,malidp-arqos-high-level = < 0xd000d000>;

Best Regards,
Wen

> >                 port {
> >                         dp0_output: endpoint {
> >                                 remote-endpoint =
> <&tda998x_2_input>;
> > --
> > 2.17.1
> >