On Tue, Jun 24, 2014 at 06:51:39PM +0530, Shobhit Kumar wrote: > For MIPI, DSI PLL is configured separately in vlv_configure_dsi_pll > during the DSI enable sequence > > Causing WARN dump otherwise in dpio_reads > > Signed-off-by: Shobhit Kumar <[email protected]>
Yeah, the DPIO power wells might be down when enabling a DSI display so we shouldn't go poking at DPIO registers. But please add a !IS_CHERRYVIEW check there also, and then you can add: Reviewed-by: Ville Syrjälä <[email protected]> Looks like I need to split up chv_update_pll() in a similar fasion. > --- > drivers/gpu/drm/i915/intel_display.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index fa77557..2fa7152 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -4629,7 +4629,10 @@ static void valleyview_crtc_enable(struct drm_crtc > *crtc) > if (intel_crtc->active) > return; > > - vlv_prepare_pll(intel_crtc); > + is_dsi = intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI); > + > + if (!is_dsi) > + vlv_prepare_pll(intel_crtc); > > /* Set up the display plane register */ > dspcntr = DISPPLANE_GAMMA_ENABLE; > @@ -4663,8 +4666,6 @@ static void valleyview_crtc_enable(struct drm_crtc > *crtc) > if (encoder->pre_pll_enable) > encoder->pre_pll_enable(encoder); > > - is_dsi = intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI); > - > if (!is_dsi) { > if (IS_CHERRYVIEW(dev)) > chv_enable_pll(intel_crtc); > -- > 1.9.1 > > _______________________________________________ > Intel-gfx mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
