0a12e43704
We're forgetting to mask off all three pipe select bits from the CDCLK_CTL value on icl+ which may lead to the extra bit being left in. That will cause us to consider the current hardware cdclk state as invalid, and we proceed to sanitize it even though the hardware may have active pipes and whatnot. Fix up the mask so we get rid of all three pipe select bits and thus hopefully no longer sanitize cdclk when it's already correctly programmed. Cc: Matt Roper <matthew.d.roper@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111641 Fixes: 0c1279b58fc7 ("drm/i915: Consolidate {bxt,cnl,icl}_init_cdclk") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20190911133129.27466-2-ville.syrjala@linux.intel.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.