video: tegra: dsi: update display dvfs.

DSI switches mode between LP and HS when display access/exit suspend
mode. Each mode corresponds to different clock rate. Update dc dvfs
when mode is changed.

Bug 1260913

Change-Id: I95b55b2795f659af487c863de9fe0332ca7f5014
Signed-off-by: Kevin Huang <kevinh@nvidia.com>
Reviewed-on: http://git-master/r/215194
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/video/tegra/dc/dsi.c b/drivers/video/tegra/dc/dsi.c
index 52deb2c92..a1709b592 100644
--- a/drivers/video/tegra/dc/dsi.c
+++ b/drivers/video/tegra/dc/dsi.c
@@ -4283,6 +4283,8 @@ static long tegra_dc_dsi_setup_clk(struct tegra_dc *dc, struct clk *clk)
                 clk_set_parent(clk, parent_clk);
 
 skip_setup:
+        tegra_dvfs_set_rate(dc->clk, dc->mode.pclk);
+
         return tegra_dc_pclk_round_rate(dc, dc->mode.pclk);
 }