clk: tegra: Disable spread spectrum on pll_d2

Enabling spread spectrum on pll_d2 can lead to issues with display
modes. HDMI monitors, for example, would report "Signal Error" and
some modes driven over DisplayPort would generate fuzzy horizontal
bands.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c
index 6149573368ef..c1fabd82aa1a 100644
--- a/drivers/clk/tegra/clk-tegra210.c
+++ b/drivers/clk/tegra/clk-tegra210.c
@@ -1935,8 +1935,9 @@ static struct tegra_clk_pll_params pll_d2_params = {
         .sdm_din_mask = PLLA_SDM_DIN_MASK,
         .sdm_ctrl_reg = PLLD2_MISC1,
         .sdm_ctrl_en_mask = PLLD2_SDM_EN_MASK,
-        .ssc_ctrl_reg = PLLD2_MISC1,
-        .ssc_ctrl_en_mask = PLLD2_SSC_EN_MASK,
+        /* disable spread-spectrum for pll_d2 */
+        .ssc_ctrl_reg = 0,
+        .ssc_ctrl_en_mask = 0,
         .round_p_to_pdiv = pll_qlin_p_to_pdiv,
         .pdiv_tohw = pll_qlin_pdiv_to_hw,
         .div_nmp = &pllss_nmp,