[PATCH 21/59] drm/i915/cnl: Remove spurious central_freq.

[Timo Aaltonen]

From: Rodrigo Vivi <rodrigo.vivi at intel.com>

BugLink: http://bugs.launchpad.net/bugs/1757573

"Display software must leave this field at the default value.
It no longer needs to be configured as part of PLL programming."

We respect this already and we are setting up the default
one line below: "DPLL_CFGCR1_CENTRAL_FREQ".

Also we don't touch anywhere else this central_freq for cnl.
So let's remove from the final write.

No functional change. Only a clean-up patch.

Cc: Manasi Navare <manasi.d.navare at intel.com>
Cc: Mika Kahola <mika.kahola at intel.com>
Cc: James Ausmus <james.ausmus at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171114194759.24541-2-rodrigo.vivi@intel.com
(cherry picked from commit ec2f343e720eca5ec7015b4d2b5fc2703604835e)
Signed-off-by: Timo Aaltonen <timo.aaltonen at canonical.com>
---
 drivers/gpu/drm/i915/intel_dpll_mgr.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 897fffe1ecd8..c7b2db10f006 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -2281,7 +2281,6 @@ static bool cnl_ddi_hdmi_pll_dividers(struct intel_crtc *crtc,
 		DPLL_CFGCR1_QDIV_MODE(wrpll_params.qdiv_mode) |
 		DPLL_CFGCR1_KDIV(wrpll_params.kdiv) |
 		DPLL_CFGCR1_PDIV(wrpll_params.pdiv) |
-		wrpll_params.central_freq |
 		DPLL_CFGCR1_CENTRAL_FREQ;
 
 	memset(&crtc_state->dpll_hw_state, 0,
-- 
2.15.1