From 26ce0b87a815c71d24fd193a81c06daefb60959f Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sat, 8 Nov 2025 14:42:36 +0100 Subject: [PATCH] drm/meson: venc: add support for HDMI DMT modes up to 3840x2160 Commit 5d0bfe448481 ("drm/meson: Add HDMI 1.4 4k modes") added support for HDMI 1.4 4k modes, which is what TVs need. For computer monitors the code is using the DMT code-path, which ends up in meson_venc_hdmi_supported_mode(), which does not allow the 4k modes yet. The datasheet for all supported SoCs mentions "4Kx2K@60". It's not clear whether "4K" here means 3840 or 4096 pixels. Allow resolutions up to 3840x2160 pixels (including middle steps, such as WQHD at 2560x1440 pixels) so they can be used with computer monitors (using the DMT code-path in the driver). Signed-off-by: Martin Blumenstingl Acked-by: Neil Armstrong Signed-off-by: Neil Armstrong Link: https://patch.msgid.link/20251108134236.1299630-1-martin.blumenstingl@googlemail.com --- drivers/gpu/drm/meson/meson_venc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c index 3bf0d6e4fc30a..4abd0c09b442e 100644 --- a/drivers/gpu/drm/meson/meson_venc.c +++ b/drivers/gpu/drm/meson/meson_venc.c @@ -868,10 +868,10 @@ meson_venc_hdmi_supported_mode(const struct drm_display_mode *mode) DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)) return MODE_BAD; - if (mode->hdisplay < 400 || mode->hdisplay > 1920) + if (mode->hdisplay < 400 || mode->hdisplay > 3840) return MODE_BAD_HVALUE; - if (mode->vdisplay < 480 || mode->vdisplay > 1920) + if (mode->vdisplay < 480 || mode->vdisplay > 2160) return MODE_BAD_VVALUE; return MODE_OK; -- 2.47.3