diff mbox series

[v2] drm/i915: Bump max TMDS bitrate to 6 Gbps on ADL-S/ADL-P/DG2+

Message ID 20240520164732.3682-1-ville.syrjala@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series [v2] drm/i915: Bump max TMDS bitrate to 6 Gbps on ADL-S/ADL-P/DG2+ | expand

Commit Message

Ville Syrjälä May 20, 2024, 4:47 p.m. UTC
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Jani Nikula May 21, 2024, 9:50 a.m. UTC | #1
On Mon, 20 May 2024, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> 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>

Reviewed-by: Jani Nikula <jani.nikula@intel.com>


> ---
>  drivers/gpu/drm/i915/display/intel_hdmi.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 0faf2afa1c09..9ac670a40bc1 100644
> --- 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;
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 0faf2afa1c09..9ac670a40bc1 100644
--- 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;