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[WHY] In some cases the remain de-tile buffer segments will be greater than zero if we don't add the non-top pipe to calculate, at this time the override de-tile buffer size will be valid and used. But it makes the de-tile buffer segments used finally for all of pipes exceed the maximum. [HOW] Add the non-top pipe to calculate the remain de-tile buffer segments. Don't set override size to use the average according to pipe count if the value exceed the maximum. Reviewed-by: Charlene Liu <charlene.liu@amd.com> Signed-off-by: Zhikai Zhai <zhikai.zhai@amd.com> Signed-off-by: Tom Chung <chiahsuan.chung@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>