Tested-by: hn.chen <hn.chen@xxxxxxxxxxxxx> This patched drvier can find the SPIT's device to set the quirk value and timestamps look ok. The platform I used is a x64 pc running Chromium OS with kernel 4.14. note: Backported to 4.14 for our test due to platform requirements. From: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> To: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>, linux-media@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, hn.chen@xxxxxxxxxxxxx, Cc: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> Date: 2021/09/16 上午 04:37 Subject: [PATCH 0/3] uvcvideo: Fix hw timestamp in Sunplus modules Add a quirk to fix the hardware timestamping in Sunplus camera modules. Ricardo Ribalda (3): media: uvc: Extend documentation of uvc_video_clock_decode() media: uvc: Allow quirking by entity guid media: uvc: Create UVC_QUIRK_IGNORE_EMPTY_TS quirk drivers/media/usb/uvc/uvc_driver.c | 36 ++++++++++++++++++++++++++++++ drivers/media/usb/uvc/uvc_video.c | 11 +++++++++ drivers/media/usb/uvc/uvcvideo.h | 1 + 3 files changed, 48 insertions(+) -- 2.33.0.309.g3052b89438-goog