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drm/radeon/kms/atom: add support for spread spectrum (v2)

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Spread spectrum is a periodic disturbance added
to the feedback divider to change the pixel clock
periodically to reduce interference.

Only enabled on LVDS.

v2: add support for r4xx and fix DCE 3

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2009-10-16 11:15:25 -04:00
committed by Dave Airlie
parent c290dadf4c
commit ebbe1cb936
4 changed files with 111 additions and 12 deletions
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2
drivers/gpu/drm/radeon/atombios.h
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@@ -2314,7 +2314,7 @@ typedef struct _ATOM_SPREAD_SPECTRUM_ASSIGNMENT {
UCHAR ucSS_Step;
UCHAR ucSS_Delay;
UCHAR ucSS_Id;
UCHAR ucRecommandedRef_Div;
UCHAR ucRecommendedRef_Div;
UCHAR ucSS_Range; /* it was reserved for V11 */
} ATOM_SPREAD_SPECTRUM_ASSIGNMENT;