linux-kernel - Re: [PATCH v11 2/3] dts: arm64: mt8183: add Mediatek MDP3 nodes

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Message-ID: <08fc74c5-4f2f-8712-454d-8cf3aed4eb10@collabora.com>
Date:   Thu, 27 Jan 2022 11:57:23 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     moudy ho <moudy.ho@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Landley <rob@...dley.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alexandre Courbot <acourbot@...omium.org>, tfiga@...omium.org,
        drinkcat@...omium.org, pihsun@...omium.org, hsinyi@...gle.com,
        Maoguang Meng <maoguang.meng@...iatek.com>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        menghui.lin@...iatek.com, sj.huang@...iatek.com,
        allen-kh.cheng@...iatek.com, randy.wu@...iatek.com,
        jason-jh.lin@...iatek.com, roy-cw.yeh@...iatek.com,
        river.cheng@...iatek.com, srv_heupstream@...iatek.com
Subject: Re: [PATCH v11 2/3] dts: arm64: mt8183: add Mediatek MDP3 nodes

Il 25/01/22 09:20, moudy ho ha scritto:
> On Fri, 2022-01-21 at 12:58 +0100, AngeloGioacchino Del Regno wrote:
>> Il 05/01/22 10:37, Moudy Ho ha scritto:
>>> Add device nodes for Media Data Path 3 (MDP3) modules.
>>>
>>> Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
>>> ---
>>>    arch/arm64/boot/dts/mediatek/mt8183.dtsi | 108
>>> ++++++++++++++++++++++-
>>>    1 file changed, 107 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>>> b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>>> index ba4584faca5a..b872ef1ff6b3 100644
>>> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>>> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>>> @@ -1325,6 +1325,79 @@
>>>    			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX
>>> 0 0x1000>;
>>>    		};
>>>    
>>> +		mdp3_rdma0: mdp3_rdma0@...01000 {
>>> +			compatible = "mediatek,mt8183-mdp3",
>>> +				     "mediatek,mt8183-mdp3-rdma0";
>>> +			mediatek,scp = <&scp>;
>>> +			mediatek,mdp3-comps = "mediatek,mt8183-mdp3-
>>> dl1",
>>> +					      "mediatek,mt8183-mdp3-
>>> dl2",
>>> +					      "mediatek,mt8183-mdp3-
>>> path1",
>>> +					      "mediatek,mt8183-mdp3-
>>> path2",
>>> +					      "mediatek,mt8183-mdp3-
>>> imgi",
>>> +					      "mediatek,mt8183-mdp3-
>>> exto";
>>> +			reg = <0 0x14001000 0 0x1000>,
>>> +			      <0 0x14000000 0 0x1000>,
>>> +			      <0 0x14005000 0 0x1000>,
>>> +			      <0 0x14006000 0 0x1000>,
>>> +			      <0 0x15020000 0 0x1000>;
>>> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX
>>> 0x1000 0x1000>,
>>> +						  <&gce SUBSYS_1400XXXX
>>> 0 0x1000>,
>>> +						  <&gce SUBSYS_1400XXXX
>>> 0x5000 0x1000>,
>>> +						  <&gce SUBSYS_1400XXXX
>>> 0x6000 0x1000>,
>>> +						  <&gce SUBSYS_1502XXXX
>>> 0 0x1000>;
>>> +			power-domains = <&spm
>>> MT8183_POWER_DOMAIN_DISP>;
>>> +			clocks = <&mmsys CLK_MM_MDP_RDMA0>,
>>> +				 <&mmsys CLK_MM_MDP_RSZ1>,
>>> +				 <&mmsys CLK_MM_MDP_DL_TXCK>,
>>> +				 <&mmsys CLK_MM_MDP_DL_RX>,
>>> +				 <&mmsys CLK_MM_IPU_DL_TXCK>,
>>> +				 <&mmsys CLK_MM_IPU_DL_RX>;
>>> +			iommus = <&iommu M4U_PORT_MDP_RDMA0>;
>>> +			mediatek,mmsys = <&mmsys>;
>>> +			mediatek,mm-mutex = <&mutex>;
>>> +			mediatek,mailbox-gce = <&gce>;
>>> +			mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST 0>,
>>> +				 <&gce 21 CMDQ_THR_PRIO_LOWEST>,
>>> +				 <&gce 22 CMDQ_THR_PRIO_LOWEST>,
>>> +				 <&gce 23 CMDQ_THR_PRIO_LOWEST>;
>>
>> Hello Moudy,
>> the mboxes for gce 21, 22, 23 are missing the third cell. Please fix.
>>
>> Regards,
>> Angelo
> 
> Hi Angelo,
> Thanks for the reminder, but I'm a bit confused, the previous
> version(v10) mentioned that the current upstream mbox has only 2
> cells.
> So I should follow this rule to remove the extra 0 in the first item as
> follows:
>   +			mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST>,
>   +				 <&gce 21 CMDQ_THR_PRIO_LOWEST>,
>   +				 <&gce 22 CMDQ_THR_PRIO_LOWEST>,
>   +				 <&gce 23 CMDQ_THR_PRIO_LOWEST>;
> 
> Thanks,
> Moudy Ho

Hello Moudy,
I'm sorry for this confusion and you are totally right in the proposed solution,
which is the exact opposite of what I said.

Thanks for understanding,
Angelo

>>
>>> +			gce-subsys = <&gce 0x14000000 SUBSYS_1400XXXX>,
>>> +				     <&gce 0x14010000 SUBSYS_1401XXXX>,
>>> +				     <&gce 0x14020000 SUBSYS_1402XXXX>,
>>> +				     <&gce 0x15020000 SUBSYS_1502XXXX>;
>>> +		};
>>> +
>>
>>
>