drm/tegra: sor - Enable only the necessary number of lanes

Instead of always enabling all four lanes, enable only the number probed
from the link.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index fefd26f0c7513940f6db78d607dbed689c340b7f..7d2a5db72365496d1dee2e3e165321a4f91fca3d 100644 (file)
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -656,7 +656,7 @@ static int tegra_output_sor_enable(struct tegra_output *output)
 
        value = tegra_sor_readl(sor, SOR_DP_LINKCTL_0);
        value &= ~SOR_DP_LINKCTL_LANE_COUNT_MASK;
-       value |= SOR_DP_LINKCTL_LANE_COUNT(4);
+       value |= SOR_DP_LINKCTL_LANE_COUNT(link.num_lanes);
        tegra_sor_writel(sor, value, SOR_DP_LINKCTL_0);
 
        /* start lane sequencer */