drm/i915/rkl: Handle comp master/slave relationships for PHYs

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Certain combo PHYs act as a compensation master to other PHYs and need
to be initialized with a special irefgen bit in the PORT_COMP_DW8
register.  Previously PHY A was the only compensation master (for PHYs
B & C), but RKL adds a fourth PHY which is slaved to PHY C instead.

Bspec: 49291
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Aditya Swarup <aditya.swarup@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200603211529.3005059-12-matthew.d.roper@intel.com

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This commit is contained in:

Matt Roper 2020-06-03 14:15:25 -07:00

parent cd0a89527d

commit b8226d62e7

1 changed files with 23 additions and 2 deletions

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drivers/gpu/drm/i915/display/intel_combo_phy.c

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