From: Ville Syrjälä <[email protected]> The current PLL settings produce a rather unstable picture when I hook up a VLV to my HP ZR24w display via a VGA cable. Switching the PLL to hybrid mode makes the picture a lot more stable. No idea if this is truly wise though...
Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/gpu/drm/i915/intel_display.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 29f2c0d..8c30a4c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4412,8 +4412,14 @@ static void vlv_update_pll(struct intel_crtc *crtc) vlv_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe), 0x00d0000f); - if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP) || - intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT)) { + if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_ANALOG)) { + /* XXX this gives a less shivery picture */ + if (!pipe) + vlv_dpio_write(dev_priv, DPIO_REFSFR(pipe), 0x08f70000); + else + vlv_dpio_write(dev_priv, DPIO_REFSFR(pipe), 0x08f40000); + } else if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP) || + intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT)) { /* Use SSC source */ if (!pipe) vlv_dpio_write(dev_priv, DPIO_REFSFR(pipe), @@ -4421,7 +4427,7 @@ static void vlv_update_pll(struct intel_crtc *crtc) else vlv_dpio_write(dev_priv, DPIO_REFSFR(pipe), 0x0df70000); - } else { /* HDMI or VGA */ + } else { /* HDMI */ /* Use bend source */ if (!pipe) vlv_dpio_write(dev_priv, DPIO_REFSFR(pipe), -- 1.8.1.5 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
