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[v2,21/25] drm/i915/xe2hpd: Set maximum DP rate to UHBR13.5

Message ID 20240403112253.1432390-22-balasubramani.vivekanandan@intel.com (mailing list archive)
State New
Headers show
Series Enable dislay support for Battlemage | expand

Commit Message

Balasubramani Vivekanandan April 3, 2024, 11:22 a.m. UTC 
Max supported speed by xe2hpd is UHBR13.5. Limit the max DP source rate
to it.

Bspec: 67066

Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Chauhan, Shekhar April 8, 2024, 3:22 a.m. UTC | #1 
On 4/3/2024 16:52, Balasubramani Vivekanandan wrote:
> Max supported speed by xe2hpd is UHBR13.5. Limit the max DP source rate
> to it.
>
> Bspec: 67066
>
> Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Shekhar Chauhan <shekhar.chauhan@intel.com>
> ---
>   drivers/gpu/drm/i915/display/intel_dp.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index b393ddbb7b35..d9d37f4971dd 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -466,6 +466,9 @@ static int mtl_max_source_rate(struct intel_dp *intel_dp)
>   	if (intel_encoder_is_c10phy(encoder))
>   		return 810000;
>   
> +	if (DISPLAY_VER_FULL(to_i915(encoder->base.dev)) == IP_VER(14, 1))
> +		return 1350000;
> +
>   	return 2000000;
>   }
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index b393ddbb7b35..d9d37f4971dd 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -466,6 +466,9 @@  static int mtl_max_source_rate(struct intel_dp *intel_dp)
 	if (intel_encoder_is_c10phy(encoder))
 		return 810000;
 
+	if (DISPLAY_VER_FULL(to_i915(encoder->base.dev)) == IP_VER(14, 1))
+		return 1350000;
+
 	return 2000000;
 }