linux-kernel - Re: [PATCH v2 0/5] Enable decoder for mt8183

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Date:   Mon, 12 Jun 2023 11:53:51 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     kernel@...labora.com, Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Miles Chen <miles.chen@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 0/5] Enable decoder for mt8183

Il 12/06/23 09:02, Hans Verkuil ha scritto:
> Hi Nicolas,
> 
> On 07/06/2023 22:53, Nícolas F. R. A. Prado wrote:
>>
>> This series enables the hardware decoder present on mt8183. At first
>> glance, the only missing piece is the devicetree node for it, however,
>> simply adding it as is would cause an address collision between the
>> first register iospace and the clock-controller node, so a rework of the
>> dt-binding and driver, as well as addition of a clock, were needed
>> first.
>>
>> Tested that H264 decoding works with the hardware decoder on
>> mt8183-kukui-jacuzzi-juniper-sku16, giving a fluster score of 98/135 on
>> the JVT-AVC_V1 test suite. And ensured other SoCs (MT8192 and MT8195)
>> still work as usual.
>>
>> Changes in v2:
>> - Merged commit 1 (media: dt-bindings: mediatek,vcodec: Allow single
>>    clock for mt8183) into commit 3 (media: dt-bindings: mediatek,vcodec:
>>    Remove VDEC_SYS for mt8183)
>> - Further constrained properties in dt-binding
>> - Added CLK_IGNORE_UNUSED flag to active clock
>> - Reformatted reg-names in DT node
>>
>> Nícolas F. R. A. Prado (4):
>>    media: dt-bindings: mediatek,vcodec: Don't require assigned-clocks
>>    media: dt-bindings: mediatek,vcodec: Remove VDEC_SYS for mt8183
>>    media: mediatek: vcodec: Read HW active status from clock
>>    clk: mediatek: mt8183: Add CLK_VDEC_ACTIVE to vdec
> 
> Is the clk patch independent from the others? It's not clear to me.
> 
> If the clk patch has to go in together with the media patches, then
> please let me know and post a v3 where the clk patch is also CC-ed to
> the linux-media mailinglist to ensure it ends up in our patchwork system.
> 
> And in that case I need a Acked-by from the clk maintainer as well.
> 
> If it is independent, then there is no need for a v3 (at least, not
> for this).
> 

The clock patch is not independent, as in the devicetree changes will not
work without the addition of that clock (and of course even fail building),
so that series needs a v3.

Nícolas, please go on and send a v3 as requested.

Cheers,
Angelo

> Regards,
> 
> 	Hans
> 
>>
>> Yunfei Dong (1):
>>    arm64: dts: mediatek: mt8183: Add decoder
>>
>>   .../media/mediatek,vcodec-decoder.yaml        | 65 +++++++++++++++----
>>   arch/arm64/boot/dts/mediatek/mt8183.dtsi      | 30 +++++++++
>>   drivers/clk/mediatek/clk-mt8183-vdec.c        |  5 ++
>>   .../mediatek/vcodec/mtk_vcodec_dec_drv.c      | 59 +++++++++++++----
>>   .../mediatek/vcodec/mtk_vcodec_dec_hw.c       | 20 ++++--
>>   .../mediatek/vcodec/mtk_vcodec_dec_pm.c       | 12 +++-
>>   .../platform/mediatek/vcodec/mtk_vcodec_drv.h |  1 +
>>   include/dt-bindings/clock/mt8183-clk.h        |  3 +-
>>   8 files changed, 165 insertions(+), 30 deletions(-)
>>
> 
>