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authorWenjing Liu <Wenjing.Liu@amd.com>2019-07-26 14:53:20 -0400
committerAlex Deucher <alexander.deucher@amd.com>2019-08-15 10:57:24 -0500
commite7f2c80cbaabf62966d02ba752d19c9a63f422ab (patch)
tree3c1765f202a890c00f452053b9aa0f19874dee54 /certs
parent79e005204f75b54db9e42a39b3f66fac2ba190b9 (diff)
downloadlinux-e7f2c80cbaabf62966d02ba752d19c9a63f422ab.tar.bz2
drm/amd/display: check hpd before retry verify link cap
[why] During detection link training if a display is disconnected, the current code will retry 3 times of link training on disconnected link before giving up. [how] Before each retry check for HPD status, only retry verify link cap when HPD is still high. Also put a 10ms delay between each retry to improve the chance of success. Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Abdoulaye Berthe <Abdoulaye.Berthe@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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