[Intel-gfx] [PATCH 3/5] drm/i915/dp: fix EHL/JSL max source rates calculation

[Imre Deak]

On Thu, Aug 12, 2021 at 11:18:04AM +0530, Animesh Manna wrote:
> Only higher voltage sku can support HBR3 so a condition
> check added in max source rate calculation for ehl/jsl.
> 
> Bspec: 32247, 20598
> 
> Cc: Jani Nikula <jani.nikula at intel.com>
> Cc: Imre Deak <imre.deak at intel.com>
> Signed-off-by: Animesh Manna <animesh.manna at intel.com>

Reviewed-by: Imre Deak <imre.deak at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 42b29948bc72..d27f29477713 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -248,7 +248,11 @@ static int icl_max_source_rate(struct intel_dp *intel_dp)
>  
>  static int ehl_max_source_rate(struct intel_dp *intel_dp)
>  {
> -	if (intel_dp_is_edp(intel_dp))
> +	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> +	struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
> +	enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
> +
> +	if (intel_dp_is_edp(intel_dp) || is_low_voltage_sku(dev_priv, phy))
>  		return 540000;
>  
>  	return 810000;
> -- 
> 2.29.0
>