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drm/i915/icl: Ensure port A combo PHY HW state is correct
Make sure the HW state of the port A combo PHY is correct wrt. the IREFGEN setting. This will force a reprogramming during init or a WARN during uninit if the setting is incorrect. On my ICL RVP I haven't seen this check failing and leading to a forced reinit/WARN, but let's add it still for consistency. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190531082626.30640-1-imre.deak@intel.com
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@ -198,6 +198,10 @@ static bool icl_combo_phy_verify_state(struct drm_i915_private *dev_priv,
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ret = cnl_verify_procmon_ref_values(dev_priv, port);
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ret = cnl_verify_procmon_ref_values(dev_priv, port);
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if (port == PORT_A)
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ret &= check_phy_reg(dev_priv, port, ICL_PORT_COMP_DW8(port),
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IREFGEN, IREFGEN);
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ret &= check_phy_reg(dev_priv, port, ICL_PORT_CL_DW5(port),
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ret &= check_phy_reg(dev_priv, port, ICL_PORT_CL_DW5(port),
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CL_POWER_DOWN_ENABLE, CL_POWER_DOWN_ENABLE);
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CL_POWER_DOWN_ENABLE, CL_POWER_DOWN_ENABLE);
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