linux-kernel - Re: [RFC resend 3/4] arm64: dts: mt8173: Fix drm subsystem

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Date:   Fri, 20 Oct 2017 14:49:56 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     CK Hu <ck.hu@...iatek.com>
Cc:     ulrich.hecht+renesas@...il.com, laurent.pinchart@...asonboard.com,
        p.zabel@...gutronix.de, airlied@...ux.ie, robh+dt@...nel.org,
        mark.rutland@....com, linux@...linux.org.uk,
        catalin.marinas@....com, will.deacon@....com,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Matthias Brugger <mbrugger@...e.com>
Subject: Re: [RFC resend 3/4] arm64: dts: mt8173: Fix drm subsystem



On 10/20/2017 11:16 AM, CK Hu wrote:
> Hi, Matthias:
> 
> On Thu, 2017-10-19 at 13:26 +0200, Matthias Brugger wrote:
>> DRM subysystem and clock driver shared the same compatible mmsys.
>> This stopped does not work, as only the first driver for a compatible
>> gets probed. We change the comaptible to the new DRM identifier to fix
>> this.
>>
>> Signed-off-by: Matthias Brugger <mbrugger@...e.com>
>> ---
>>  arch/arm64/boot/dts/mediatek/mt8173.dtsi | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
>> index b99a27372965..89db0a3f5950 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
>> @@ -803,6 +803,11 @@
>>  			#clock-cells = <1>;
>>  		};
>>  
>> +		dispsys: display-system {
>> +			compatible = "mediatek,mt2701-dispsys";
> 
> Why do you probe "mediatek,mt2701-dispsys" in mt8173.dtsi?
> 

That's actually a copy-paste-error. Thanks for noting!

Matthias

> Regards,
> CK
> 
>> +			mediatek,mmsys = <&mmsys>;
>> +		}
>> +
>>  		mdp_rdma0: rdma@...01000 {
>>  			compatible = "mediatek,mt8173-mdp-rdma",
>>  				     "mediatek,mt8173-mdp";
> 
>