diff options
| author | Maxime Ripard <maxime@cerno.tech> | 2021-05-07 17:05:12 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2021-05-24 14:42:40 +0200 |
| commit | 86e3a65fdb63ec3351e5368794e7d5c808be5bc3 (patch) | |
| tree | e3624b8bed0ca57453fb168f02d5ef02319c80af /drivers/gpu/drm/vc4/vc4_hdmi.h | |
| parent | 7d9061e097e859dc33ad5d5f889385875f726808 (diff) | |
drm/vc4: hdmi: Check and warn if we can't reach 4kp60 frequencies
In order to reach the frequencies needed to output at 594MHz, the
firmware needs to be configured with the appropriate parameters in the
config.txt file (enable_hdmi_4kp60 and force_turbo).
Let's detect it at bind time, warn the user if we can't, and filter out
the relevant modes.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210507150515.257424-10-maxime@cerno.tech
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.h')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index 060bcaefbeb5..089c91b3e14f 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -157,6 +157,14 @@ struct vc4_hdmi { */ bool disable_wifi_frequencies; + /* + * Even if HDMI0 on the RPi4 can output modes requiring a pixel + * rate higher than 297MHz, it needs some adjustments in the + * config.txt file to be able to do so and thus won't always be + * available. + */ + bool disable_4kp60; + struct cec_adapter *cec_adap; struct cec_msg cec_rx_msg; bool cec_tx_ok; |