RE: [PATCH v7 0/4] media: camss: sm8250: Virtual channels support for SM8250

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-----Original Message-----
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx> 
Sent: Tuesday, April 4, 2023 12:26 AM
To: Azam Sadiq Pasha Kapatrala Syed <akapatra@xxxxxxxxxxx>; nicolas.dechesne@xxxxxxxxxx
Subject: Fwd: [PATCH v7 0/4] media: camss: sm8250: Virtual channels support for SM8250

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-------- Forwarded Message --------
Subject: Re: [PATCH v7 0/4] media: camss: sm8250: Virtual channels support for SM8250
Date: Tue, 4 Apr 2023 08:25:17 +0100
From: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
To: Milen Mitkov (Consultant) <quic_mmitkov@xxxxxxxxxxx>, laurent.pinchart@xxxxxxxxxxxxxxxx, hverkuil-cisco@xxxxxxxxx

On 04/04/2023 01:06, Bryan O'Donoghue wrote:
> On 03/04/2023 13:16, Milen Mitkov (Consultant) wrote:
>>
>> On 03/04/2023 15:10, Bryan O'Donoghue wrote:
>>> On 03/04/2023 12:01, Milen Mitkov (Consultant) wrote:
>>>> Hi Bryan,
>>>>
>>>> no, the iteration through the mask didn't go away? The print shows 
>>>> up when the csid entity's source pad(s) enables the link to the ife 
>>>> sink pad(s). Maybe the client (libcamera?) decides to disable this 
>>>> link for some reason?
>>>>
>>>> Regards,
>>>>
>>>> Milen
>>>
>>> So previously we had one CSI device in user-space and after your 
>>> change we have one CSI device per VC, correct ?
>>>
>>> ---
>>> bod
>>
>> With these changes there's still one CSID device/media entity, but it 
>> has more source pads (4 vs 1 previously).
>>
>> Regards,
>>
>> Milen
>>
>
> OK.
>
> I took the time to apply this series to my development tree.
>
> Before:
> - entity 19: msm_csid0 (2 pads, 10 links)
>               type V4L2 subdev subtype Unknown flags 0
>               device node name /dev/v4l-subdev6
>          pad0: Sink
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  <- "msm_csiphy0":1 []
>                  <- "msm_csiphy1":1 []
>                  <- "msm_csiphy2":1 []
>                  <- "msm_csiphy3":1 []
>                  <- "msm_csiphy4":1 []
>                  <- "msm_csiphy5":1 []
>          pad1: Source
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  -> "msm_vfe0_rdi0":0 []
>                  -> "msm_vfe1_rdi0":0 []
>                  -> "msm_vfe2_rdi0":0 []
>                  -> "msm_vfe3_rdi0":0 []
>
> After:
> - entity 19: msm_csid0 (5 pads, 22 links)
>               type V4L2 subdev subtype Unknown flags 0
>               device node name /dev/v4l-subdev6
>          pad0: Sink
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  <- "msm_csiphy0":1 []
>                  <- "msm_csiphy1":1 []
>                  <- "msm_csiphy2":1 [ENABLED]
>                  <- "msm_csiphy3":1 []
>                  <- "msm_csiphy4":1 []
>                  <- "msm_csiphy5":1 []
>          pad1: Source
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  -> "msm_vfe0_rdi0":0 [ENABLED]
>                  -> "msm_vfe1_rdi0":0 []
>                  -> "msm_vfe2_rdi0":0 []
>                  -> "msm_vfe3_rdi0":0 []
>          pad2: Source
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  -> "msm_vfe0_rdi1":0 []
>                  -> "msm_vfe1_rdi1":0 []
>                  -> "msm_vfe2_rdi1":0 []
>                  -> "msm_vfe3_rdi1":0 []
>          pad3: Source
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  -> "msm_vfe0_rdi2":0 []
>                  -> "msm_vfe1_rdi2":0 []
>                  -> "msm_vfe2_rdi2":0 []
>                  -> "msm_vfe3_rdi2":0 []
>          pad4: Source
>                  [fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb]
>                  -> "msm_vfe0_pix":0 []
>                  -> "msm_vfe1_pix":0 []
>                  -> "msm_vfe2_pix":0 []
>                  -> "msm_vfe3_pix":0 []
>
> So that's consistent and this worked for me.
>
> media-ctl --reset
> media-ctl -v -d /dev/media0 -V '"imx577
> '20-001a'":0[fmt:SRGGB10/4056x3040 field:none]'
> media-ctl -V '"msm_csiphy2":0[fmt:SRGGB10/4056x3040]'
> media-ctl -V '"msm_csid0":0[fmt:SRGGB10/4056x3040]'
> media-ctl -V '"msm_vfe0_rdi0":0[fmt:SRGGB10/4056x3040]'
> media-ctl -l '"msm_csiphy2":1->"msm_csid0":0[1]'
> media-ctl -l '"msm_csid0":1->"msm_vfe0_rdi0":0[1]'
> build/yavta -B capture-mplane -c -I -n 5 -f SRGGB10P -s 4056x3040 -F
> /dev/video0
>
> For the series.
>
> Acked-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>

> Hey Hans, Laurent.

> Do you guys have any thoughts on picking Milen's series up ?

 > From my perspective it works well enough on the SM8250 hardware.

> ---
> bod

Hi Team - Appreciate for any feedback on when we can get this series picked up. As this will help customers to directly pick the latest Kernel instead of applying patches to each kernel version.

Thanks,
Azam




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