Hi,
Hardware support 2 LVDS Display, BSP support them adaptively. But one of them flicker in Linux kernel stage. If reboot through reboot cmd(WDOG1), it will not flicker.
I suspect that this is consistence issue which generate by U-boot/Kernel IPU/Clock settings?
BSP:
Linux 4.1.15 (Original BSP, not apply any patch)
U-boot 2015.4 (have applied U-boot patch from https://community.nxp.com/docs/DOC-98109 ).
Hi jiu
one can check that both lvds clocks are enabled using procedure described in
EB821 LDB Clock Switch Procedure & i.MX6 Asynchronous Clock Switching Guidelines
https://www.nxp.com/docs/en/engineering-bulletin/EB821.pdf
Also one can check if lvds clock was not used by other module, as for example below
https://community.nxp.com/thread/465848
Best regards
igor
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Hi Igor,
I have checked both, there are init_ldb_clocks in clk-imx6q.c which do you mentioned, and there are no other use LDB clock.
WHY the other display is good without flicker?