[PATCH v4 13/14] drm/rockchip: dw_hdmi_qp: Enable YUV420 output format
From: Cristian Ciocaltea <hidden>
Date: 2026-09-02 22:54:32
Also in:
dri-devel, linux-devicetree, linux-rockchip, lkml
Subsystem:
arm/rockchip soc support, drm drivers, drm drivers and misc gpu patches, drm drivers for rockchip, the rest · Maintainers:
Heiko Stuebner, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Sandy Huang, Andy Yan, Linus Torvalds
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. Tested-by: Igor Paunovic <redacted> Signed-off-by: Cristian Ciocaltea <redacted> --- 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);
--
2.55.0