Re: [PATCH v5 5/8] clk: qcom: gcc-msm8939: mark Venus core GDSCs as hardware controlled

On 07/05/2026 16:51, Erikas Bitovtas wrote:
> 
> 
> On 5/7/26 4:37 PM, Bryan O'Donoghue wrote:
>> v4l2-ctl --verbose --set-fmt-video-
>> out=width=1280,height=720,pixelformat=NV12 --set-selection-output
>> target=crop,top=0,left=0,width=1280,height=720 --set-fmt-
>> video=pixelformat=H264 --stream-mmap --stream-out-mmap --stream-
>> from=cyclists_1280x720_92frames.yuv --stream-to=/tmp/
>> cyclists_1280x720_92frames.h264 -d /dev/video1
> 
> With the patch kept:
> v4l2-ctl --verbose
> --set-fmt-video-out=width=1280,height=720,pixelformat=NV12
> --set-selection-output target=crop,top=0,left=0,width=1280,height=720
> --set-fmt-video=pixelformat=H26
> 4 --stream-mmap --stream-out-mmap
> --stream-from=cyclists_1280x720_92frames.yuv
> --stream-to=/tmp/cyclists_1280x720_92frames.h264 -d /dev/video1
> VIDIOC_QUERYCAP: ok
> VIDIOC_G_FMT: ok
> VIDIOC_S_FMT: ok
> Format Video Capture Multiplanar:
> 	Width/Height      : 1280/736
> 	Pixel Format      : 'H264' (H.264)
> 	Field             : None
> 	Number of planes  : 1
> 	Flags             :
> 	Colorspace        : Default
> 	Transfer Function : Default
> 	YCbCr/HSV Encoding: Default
> 	Quantization      : Default
> 	Plane 0           :
> 	   Bytes per Line : 0
> 	   Size Image     : 708608
> VIDIOC_G_FMT: ok
> VIDIOC_S_FMT: ok
> Format Video Output Multiplanar:
> 	Width/Height      : 1280/736
> 	Pixel Format      : 'NV12' (Y/UV 4:2:0)
> 	Field             : None
> 	Number of planes  : 1
> 	Flags             :
> 	Colorspace        : Default
> 	Transfer Function : Default
> 	YCbCr/HSV Encoding: Default
> 	Quantization      : Default
> 	Plane 0           :
> 	   Bytes per Line : 1280
> 	   Size Image     : 1425408
> VIDIOC_G_SELECTION: ok
> VIDIOC_S_SELECTION: ok
> 		VIDIOC_G_FMT returned 0 (No error information)
> 		VIDIOC_G_FMT returned 0 (No error information)
> 		VIDIOC_G_FMT returned 0 (No error information)
> 		VIDIOC_REQBUFS returned -1 (Invalid argument)
> 
> With the patch reverted:
> v4l2-ctl --verbose
> --set-fmt-video-out=width=1280,height=720,pixelformat=NV12
> --set-selection-output target=crop,top=0,left=0,width=1280,height=720
> --set-fmt-video=pixelformat=H26
> 4 --stream-mmap --stream-out-mmap
> --stream-from=cyclists_1280x720_92frames.yuv
> --stream-to=/tmp/cyclists_1280x720_92frames.h264 -d /dev/video1
> VIDIOC_QUERYCAP: ok
> VIDIOC_G_FMT: ok
> The pixelformat 'H264' is invalid
> VIDIOC_G_FMT: ok
> The pixelformat 'NV12' is invalid
> 
> Decoding breaks if I revert the patch as well, it fails with a power
> collapse fail.

If you declare both as decoders can you successfully decode @ video0 and 
video1 ?

ie be sure the error is encoder and not core specific.

---
bod