[PATCH v3 13/14] drm/rockchip: dw_hdmi_qp: Enable YUV420 output format
From: Cristian Ciocaltea
Date: Wed Jul 08 2026 - 17:59:32 EST
Both RK3576 and RK3588 SoCs are capable of driving the YUV420 output
color format, and the required bus-format handling and VOP2 support are
already in place. Advertise it via the platform supported formats so
the HDMI core can select it.
YUV420 halves the TMDS bandwidth compared to RGB/YUV444, which enables
high-resolution modes such as 4K@60Hz on links that cannot otherwise
carry the full-bandwidth signal.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
---
drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
index 78473f9a0fce..1af29066a0a3 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
@@ -611,7 +611,8 @@ static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master,
plat_data.supported_formats = BIT(DRM_OUTPUT_COLOR_FORMAT_RGB444) |
BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR444) |
- BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422);
+ BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422) |
+ BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR420);
encoder = &hdmi->encoder.encoder;
encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
--
2.54.0