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[WHY] Previous LTTPR change has caused a regression that led to an issue where LTTPR is disabled [HOW] Extended changes from previous fix to DCN30X Reviewed-by: Wesley Chalmers <wesley.chalmers@amd.com> Reviewed-by: Martin Leung <Martin.Leung@amd.com> Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com> Signed-off-by: Angus Wang <angus.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>