[Intel-gfx] [PATCH 0/5] drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref clock

Imre Deak imre.deak at intel.com
Tue Sep 29 00:29:24 UTC 2020


This patchset replaces [1], adding also a workaround for TGL BIOSes that
don't apply Display WA #22010492432. The first patch fixes an incorrect
BIOS PDIV programming I noticed while testing this patchset on an ASUS/SKL
system.

[1] https://patchwork.freedesktop.org/series/79486/

Imre Deak (5):
  drm/i915/skl: Work around incorrect BIOS WRPLL PDIV programming
  drm/i915: Factor out skl_wrpll_calc_freq()
  drm/i915/icl: Cross check the combo PLL WRPLL parameters wrt.
    hard-coded PLL freqs
  drm/i915/tgl: Fix Combo PHY DPLL fractional divider for 38.4MHz ref
    clock
  drm/i915/tgl: Add workaround for incorrect BIOS combo PHY DPLL
    programming

 drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 232 ++++++++++++------
 drivers/gpu/drm/i915/i915_reg.h               |   4 +
 2 files changed, 161 insertions(+), 75 deletions(-)

-- 
2.25.1



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