infinite error message of "[drm] No driver support for vblank timestamp query" during boot

fei_4_xu — Thu, 03 Jun 2021 15:06:57 GMT

Hi,

I'm trying too bootup a new hardware board based on imx8qxp evk, I have flashed the official image of "L5.4.70-2.3.0_images" into the board and then switched to boot from mmc.

At the boot phase, the debug console prints infinite message like this:

[ 24.714712] [drm] No driver support for vblank timestamp query. [ 24.720759] imx-drm display-subsystem: bound imx-drm-dpu-bliteng.2 (ops dpu_bliteng_ops) [ 24.729204] imx-drm display-subsystem: bound imx-dpu-crtc.0 (ops dpu_crtc_ops) [ 24.736731] imx-drm display-subsystem: bound imx-dpu-crtc.1 (ops dpu_crtc_ops) [ 24.758632] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).

the message will never stop.

I'd like to check how to stop this message or how to locate the hardware errors if any.

Thanks.

Re: infinite error message of "[drm] No driver support for vblank timestamp query" during

igorpadykov — Thu, 03 Jun 2021 23:19:47 GMT

Hi Fei

official image of "L5.4.70-2.3.0_images" may not work on new hardware board as were

built for MEK board. For new custom board it is necessary to run ddr test and rebuild image

according to ddr test documentation

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8-8X-Family-DDR-Tools-Release/ta-p/1121519

Best regards
igor

topic infinite error message of "[drm] No driver support for vblank timestamp query" during boot in i.MX Processors

infinite error message of "[drm] No driver support for vblank timestamp query" during boot

Re: infinite error message of "[drm] No driver support for vblank timestamp query" during