diff mbox series

[7/8] drm/rockchip: rk3066_hdmi: Advertise HDMI 1.4 capabilities

Message ID 20261001-bridge-advert-hdmi-caps-v1-7-f8806570e243@collabora.com (mailing list archive)
State New
Headers
Series drm: Advertise supported HDMI version in HDMI drivers |

Commit Message

Cristian Ciocaltea Oct. 1, 2026, 1:14 a.m. UTC 
Bridges using DRM_BRIDGE_OP_HDMI are now expected to also provide a
supported HDMI version.  This is not yet enforced, but will become
mandatory once the migration to the new caps-based HDMI connector
initialization API is completed.

The RK3066 HDMI TX supports HDMI 1.4a, as described in commit
f84d3d37b7fb ("drm: rockchip: introduce rk3066 hdmi").  However, the
driver does not currently enforce a maximum TMDS character rate, it only
filters non-CEA modes and excludes VIC 1 (640x480) via the .mode_valid
callback.

Advertise HDMI 1.4 support for now so that modes exceeding the 340 MHz
TMDS limit are rejected by the core.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 drivers/gpu/drm/rockchip/rk3066_hdmi.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index f28d6a883e09..f748700b0ba6 100644
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -14,6 +14,7 @@ 
 #include <drm/drm_probe_helper.h>
 
 #include <linux/clk.h>
+#include <linux/hdmi.h>
 #include <linux/mfd/syscon.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
@@ -712,6 +713,7 @@  rk3066_hdmi_register(struct drm_device *drm, struct rk3066_hdmi *hdmi)
 	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	hdmi->bridge.vendor = "Rockchip";
 	hdmi->bridge.product = "RK3066 HDMI";
+	hdmi->bridge.supported_hdmi_ver = HDMI_VERSION_1_4;
 
 	hdmi->bridge.ddc = rk3066_hdmi_i2c_adapter(hdmi);
 	if (IS_ERR(hdmi->bridge.ddc))