diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2022-01-27 16:45:59 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-02-03 18:07:59 +0300 |
| commit | 71702c495b78dfbc22eeac32ea9cda452862750d (patch) | |
| tree | 0a8a701b441a0041832b4f31792e18b37bec247b /drivers/gpu | |
| parent | 3404b39919c3c87677cdba45405d24033b3276f3 (diff) | |
drm/vc4: hdmi: Don't try disabling SCDC on Pi0-3.
The code that set the scdc_enabled flag to ensure it was
disabled at boot time also ran on Pi0-3 where there is no
SCDC support. This lead to a warning in vc4_hdmi_encoder_post_crtc_disable
due to vc4_hdmi_disable_scrambling being called and trying to
read (and write) register HDMI_SCRAMBLER_CTL which doesn't
exist on those platforms.
Only set the flag should the interface be configured to support
more than HDMI 1.4.
Fixes: 1998646129fa ("drm/vc4: hdmi: Introduce a scdc_enabled flag")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127134559.292778-1-maxime@cerno.tech
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 3286decf5be5..6d5a6388ca1e 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -2510,7 +2510,8 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) * vc4_hdmi_disable_scrambling() will thus run at boot, make * sure it's disabled, and avoid any inconsistency. */ - vc4_hdmi->scdc_enabled = true; + if (variant->max_pixel_clock > HDMI_14_MAX_TMDS_CLK) + vc4_hdmi->scdc_enabled = true; ret = variant->init_resources(vc4_hdmi); if (ret) |