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由 Mario Kleiner 提交于
Avoid big roundoff errors in scanline/hactive durations for high pixel clocks, especially for >= 500 Mhz, and thereby program more accurate display fifo watermarks. This is a port of the corresponding amdgpu patch. Implemented for DCE 4,6,8. Tested on Evergreen/DCE-4 with Radeon HD-5770. Signed-off-by: NMario Kleiner <mario.kleiner.de@gmail.com> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
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