On CNL SKUs that uses port F, max DP rate is 8.1G for all
ports when we have the elevated voltage.
v2: Make commit message more generic.
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 377a9770bae5..1b80a0ac4fd9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -238,8 +238,9 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp)
source_rates = cnl_rates;
size = ARRAY_SIZE(cnl_rates);
voltage = I915_READ(CNL_PORT_COMP_DW3) & VOLTAGE_INFO_MASK;
- if (port == PORT_A || port == PORT_D ||
- voltage == VOLTAGE_INFO_0_85V)
+ if (voltage == VOLTAGE_INFO_0_85V ||
+ (!IS_CNL_WITH_PORT_F(dev_priv) && (port == PORT_A ||
+ port == PORT_D)))
size -= 2;
} else if (IS_GEN9_BC(dev_priv)) {
source_rates = skl_rates;
--
2.13.6
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