drm/i915: Bump max TMDS bitrate to 6 Gbps on ADL-S/ADL-P/DG2+

Bspec lists the mas TMDS bitrate as 6 Gbps on ADL-S/ADL-P/DG2.
Bump our limit to match.

v2: Bump for ADL-S as well (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240520164732.3682-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 0faf2afa1c09cb3623adf0711abf86090344aaf4..9ac670a40bc1512ed58817e9ddb45ad6f17fc65c 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1784,7 +1784,9 @@ static int intel_hdmi_source_max_tmds_clock(struct intel_encoder *encoder)
        struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
        int max_tmds_clock, vbt_max_tmds_clock;
 
-       if (DISPLAY_VER(dev_priv) >= 10)
+       if (DISPLAY_VER(dev_priv) >= 13 || IS_ALDERLAKE_S(dev_priv))
+               max_tmds_clock = 600000;
+       else if (DISPLAY_VER(dev_priv) >= 10)
                max_tmds_clock = 594000;
        else if (DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL(dev_priv))
                max_tmds_clock = 300000;