diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index d51173056a9e..e35e10758556 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1067,10 +1067,18 @@ static int tegra_crtc_setup_clk(struct drm_crtc *crtc, return -ENODEV; /* + * The ->setup_clock() callback is optional, but if encoders don't + * implement it they most likely need to do the equivalent within the + * ->mode_fixup() callback. + */ + if (!output->ops || !output->ops->setup_clock) + return 0; + + /* * This assumes that the parent clock is pll_d_out0 or pll_d2_out * respectively, each of which divides the base pll_d by 2. */ - err = tegra_output_setup_clock(output, dc->clk, pclk, &div); + err = output->ops->setup_clock(output, dc->clk, pclk, &div); if (err < 0) { dev_err(dc->dev, "failed to setup clock: %ld\n", err); return err; |