Hans, On 11/8/23 7:59 PM, Hans de Goede wrote: > Hi Bingbu, > > On 10/24/23 13:29, bingbu.cao@xxxxxxxxx wrote: >> From: Bingbu Cao <bingbu.cao@xxxxxxxxx> >> >> This patch series adds a driver for Intel IPU6 input system. >> IPU6 is the sixth generation of Imaging Processing Unit, it is a PCI >> device which can be found in some Intel Client Platforms. User can use >> IPU6 to capture images from MIPI camera sensors. >> >> IPU6 has its own firmware which exposes ABIs to driver, and communicates >> with CSE to do firmware authentication. IPU6 has its MMU hardware, so >> the driver sets up a page table to allow IPU6 DMA to access the system >> memory. >> >> IPU6 input system driver uses MC and V4L2 sub-device APIs besides V4L2. > > I have been testing this on a TigerLake system, a Dell Latitude 9420 > with ov01a1s and the packed 10 bit bayer pixel fmt: V4L2_PIX_FMT_SGRBG10P, > which libcamera together with (WIP) software debayer support picks > by default does not work. There are many many CSI errors in dmesg > and only the first 10 or so lines of the image show. > > Disabling the packed format by removing it from ipu6_isys_pfmts[], > making libcamera pick the unpacked (every 10 bits per pixel data > stored in a 16 bit word in output buffer) fixes this. > > Are the packed bayer formats supposed to work on Tiger Lake, or > is this a known issue which Intel's own userspace stack avoids > by always picking the unpacked format ? I just tested the packed bayer on my device (ov01a10) and did not observe the problems like yours, could you share the isys kernel log? > > Regards, > > Hans > > -- Best regards, Bingbu Cao
