[PATCH 3/5][SRU][J/OEM-5.14] drm/i915/display: Remove check for low voltage sku for max dp source rate

[Koba Ko]

From: Ankit Nautiyal <ankit.k.nautiyal at intel.com>

BugLink: https://bugs.launchpad.net/bugs/1967986

The low voltage sku check can be ignored as OEMs need to consider that
when designing the board and then put any limits in VBT.

Same is now changed in Bspec pages.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5272

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Reviewed-by: Imre Deak <imre.deak at intel.com>
Signed-off-by: Imre Deak <imre.deak at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315080247.1161844-2-ankit.k.nautiyal@intel.com
(cherry picked from commit 73867c8709b569cdd7fda67f01dfe02c8d055521
drmtip)
Signed-off-by: Koba Ko <koba.ko at canonical.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index dbff4b6aa22b..4afe2caadaba 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -283,7 +283,10 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp)
 	if (DISPLAY_VER(dev_priv) >= 11) {
 		source_rates = icl_rates;
 		size = ARRAY_SIZE(icl_rates);
-		if (IS_JSL_EHL(dev_priv))
+		if (IS_ALDERLAKE_P(dev_priv) || IS_ALDERLAKE_S(dev_priv) ||
+			 IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
+			max_rate = 810000;
+		else if (IS_JSL_EHL(dev_priv))
 			max_rate = ehl_max_source_rate(intel_dp);
 		else
 			max_rate = icl_max_source_rate(intel_dp);
-- 
2.25.1