diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cx0_phy.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index d414f6b7f993..7516abf8dba9 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -206,6 +206,13 @@ static int __intel_cx0_read_once(struct drm_i915_private *i915, enum port port, intel_clear_response_ready_flag(i915, port, lane); + /* + * FIXME: Workaround to let HW to settle + * down and let the message bus to end up + * in a known state + */ + intel_cx0_bus_reset(i915, port, lane); + return REG_FIELD_GET(XELPDP_PORT_P2M_DATA_MASK, val); } @@ -285,6 +292,13 @@ static int __intel_cx0_write_once(struct drm_i915_private *i915, enum port port, intel_clear_response_ready_flag(i915, port, lane); + /* + * FIXME: Workaround to let HW to settle + * down and let the message bus to end up + * in a known state + */ + intel_cx0_bus_reset(i915, port, lane); + return 0; } |