drm/tegra: dsi - Reset controller on driver unload

Assert the DSI controller's reset when the driver is unloaded to reduce
power consumption and to put the controller into a known state for
subsequent driver reloads.

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

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 55ac86faec606d700dee4767e0e17d6f7af1b3ce..b6740c89f6f3ca4aa35f1e8d3eb96ee86d080cc8 100644 (file)
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -949,6 +949,7 @@ static int tegra_dsi_remove(struct platform_device *pdev)
        clk_disable_unprepare(dsi->clk_parent);
        clk_disable_unprepare(dsi->clk_lp);
        clk_disable_unprepare(dsi->clk);
+       reset_control_assert(dsi->rst);
 
        err = tegra_output_remove(&dsi->output);
        if (err < 0) {