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| author |   Imre Deak <imre.deak@intel.com> | 2024-07-22 19:55:02 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2024-07-31 18:45:59 +0300 |
| commit | e44bc451aa4b08845c238028daafb4eaffb573a3 (patch) | |
| tree | a981c85bc982f183280fef0c792a656662f78e5c /rust/kernel/ssh:/git@git.zx2c4.com | |
| parent | drm/i915/dp_mst: Reprobe the MST topology after a link parameter change (diff) | |
drm/i915/dp_mst: Ensure link parameters are up-to-date for a disabled link
As explained in the previous patch, the MST link BW reported by branch
devices during topology probing/path resources enumeration depends on
the link parameters programmed to DPCD to be up-to-date. After a sink is
plugged this is not ensured, as those DPCD values start out zeroed. The
target link parameters (for a subsequent modeset) are the maximum that
is supported, so make sure these maximum values are programmed before the
topology probing.
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722165503.2084999-14-imre.deak@intel.com
Diffstat (limited to 'rust/kernel/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions