Re: [PATCH v7 0/7] Add AMD ISP4 driver

[Du, Bin]

Thank you, Sultan, for your confirmation, contributions, and ongoing 
support！

On 12/17/2025 3:36 PM, Sultan Alsawaf wrote:
> On Tue, Dec 16, 2025 at 05:13:19PM +0800, Bin Du wrote:
> > Hello,
> >
> > AMD ISP4 is the AMD image processing gen 4 which can be found in HP ZBook Ultra G1a 14 inch Mobile Workstation PC (Ryzen AI Max 300 Series)
> > (https://ubuntu.com/certified/202411-36043)
> > This patch series introduces the initial driver support for the AMD ISP4.
> >
> > Patch summary:
> > - Powers up/off and initializes ISP HW
> > - Configures and kicks off ISP FW
> > - Interacts with APP using standard V4l2 interface by video node
> > - Controls ISP HW and interacts with ISP FW to do image processing
> > - Supports enum/set output image format and resolution
> > - Supports queueing buffer from app and dequeuing ISP filled buffer to App
> > - It is verified on qv4l2, cheese and qcam
> > - It is verified together with following patches
> > 	platform/x86: Add AMD ISP platform config (https://lore.kernel.org/all/20250514215623.522746-1-pratap.nirujogi@xxxxxxx/)
> > 	pinctrl: amd: isp411: Add amdisp GPIO pinctrl (https://github.com/torvalds/linux/commit/e97435ab09f3ad7b6a588dd7c4e45a96699bbb4a)
> > 	drm/amd/amdgpu: Add GPIO resources required for amdisp (https://gitlab.freedesktop.org/agd5f/linux/-/commit/ad0f5966ed8297aa47b3184192b00b7379ae0758)
> > 	drm/amd/amdgpu: Declare isp firmware binary file (https://gitlab.freedesktop.org/agd5f/linux/-/commit/35345917bc9f7c86152b270d9d93c220230b667f)
> >
> > AMD ISP4 Key features:
> > - Processes bayer raw data from the connected sensor and output them to different YUV formats
> > - Downscale input image to different output image resolution
> > - Pipeline to do image processing on the input image including demosaic, denoise, 3A, etc.
> >
> > ----------
> >
> > Changes v6 -> v7:
> >
> > - Added missed blank line after some if statements.
> > - Changed the pm_runtime_disable() order in isp4_capture_remove() to align with initialization.
> > - Reset buf_sent_cnt and start_stream_cmd_sent on stream stop.
> > - Removed duplicate buf_sent_cnt and start_stream_cmd_sent reset in isp4sd_pwron_and_init().
> > - Combined isp4sd_reset_stream_info() and isp4sd_reset_camera_info() into isp4sd_uninit_stream() to eliminate redundant stream info reset.
> > - Removed always-false status check in isp4sd_uninit_stream().
> > - Minor style improvements.
> > [snip]
>
> Hi Bin,
>
> v7 looks great to me! :)
>
> For the whole series,
>
> Reviewed-by: Sultan Alsawaf <sultan@xxxxxxxxxxxxxxx>

--
Regards,
Bin