diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2010-02-03 15:22:22 -0500 |
|---|---|---|
| committer | Alex Deucher <alexdeucher@gmail.com> | 2010-02-03 15:22:22 -0500 |
| commit | 8d63d70f7ebaf9d250f0449d3720ef47516c05df (patch) | |
| tree | 19735472a3d360a3c9ff3332dd429432f4375d5b /src/atombios_crtc.c | |
| parent | ecbc26431914216a8b207e81451282ea07c8b92f (diff) | |
evergreen: use external clock source for DP PHY
DP CRTC clock always comes from DCPLL. This frees
up PPll1/2 for non-DP-mode PHYs and CRTCs
Diffstat (limited to 'src/atombios_crtc.c')
| -rw-r--r-- | src/atombios_crtc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/atombios_crtc.c b/src/atombios_crtc.c index 5a88bad2..07fa8075 100644 --- a/src/atombios_crtc.c +++ b/src/atombios_crtc.c @@ -324,9 +324,11 @@ atombios_pick_pll(xf86CrtcPtr crtc) } } } - /* All DP ports need to use the same PPLL */ + /* DP clock comes from DCPLL, DP PHY CLK comes from ext source + * setting ATOM_PPLL_INVALID skips the PPLL programming for DP + */ if (is_dp) - radeon_crtc->pll_id = ATOM_PPLL2; + radeon_crtc->pll_id = ATOM_PPLL_INVALID; else if (!(pll_use_mask & 1)) radeon_crtc->pll_id = ATOM_PPLL1; else |