It seems like the mixer can only run properly when clocked at 150MHz. In order to have something more robust than simply a fire-and-forget assigned-clocks-rate, let's put that in the code. Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/sun4i/sun8i_mixer.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c index cb193c5f1686..c0cdccf772a2 100644 --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c @@ -315,6 +315,13 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master, } clk_prepare_enable(mixer->mod_clk); + /* + * It seems that we need to enforce that rate for whatever + * reason for the mixer to be functional. Make sure it's the + * case. + */ + clk_set_rate(mixer->mod_clk, 150000000); + list_add_tail(&mixer->engine.list, &drv->engine_list); /* Reset the registers */ -- git-series 0.9.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
