]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
drm/i915/cnl: Allow 2 pixel per clock on Cannonlake.
authorRodrigo Vivi <rodrigo.vivi@intel.com>
Tue, 3 Oct 2017 22:31:42 +0000 (15:31 -0700)
committerRodrigo Vivi <rodrigo.vivi@intel.com>
Wed, 25 Oct 2017 17:36:01 +0000 (10:36 -0700)
commit43037c86d10cea185f6518f797f6303a06e734f9
tree1b31aaf9b54ed433e1f6c8f79d7ae96a29cdb4d3
parent22a8a4fc93b14b5a8cfc785edbdc6f7bd98bffb6
drm/i915/cnl: Allow 2 pixel per clock on Cannonlake.

This is heavily based on a initial patch provided by Ville
plus all changes provided later by Ander.

As Geminilake, Cannonlake also supports 2 pixels per clock.

Different from Geminilake we are not implementing the 99% Wa.
But we can revisit that decision later if we find out
any limitation on later CNL SKUs.

v2: Rebase on top of commit 'd305e0614601 ("drm/i915: Track
minimum acceptable cdclk instead of "minimum dotclock")'

v3: When fixing HDMI on CNL I noticed that I missed to convert
    back the doubled pixel rate to cdclk.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003223142.26264-1-rodrigo.vivi@intel.com
drivers/gpu/drm/i915/intel_cdclk.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_pm.c