From 9c90199b39637ad94253c4fd8e7b1333ca1d3e0d Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Mon, 3 Aug 2026 18:10:43 +0200 Subject: [PATCH] drm/sun4i: tcon: Set output mux for DSI and LVDS DSI and LVDS skip output mux setup, so TCON TOP cannot route the selected mixer. Configure them like other channel 0 outputs. In practice this matters for D1, where channel 0 TCONs are fed through TCON TOP. The remaining set_mux implementations only handle TMDS and return an error for other encoder types, as before. Fixes: b9b52d2f4aaf ("drm/sun4i: Add support for D1 TCONs") Signed-off-by: Jernej Skrabec Acked-by: Chen-Yu Tsai Link: https://patch.msgid.link/7e9dad9eed2e91a79c4e1202caa8fed7c2427531.1785772659.git.jernej.skrabec@gmail.com Signed-off-by: Chen-Yu Tsai --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index d4c1723c5e3d..43d48a5a820f 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -717,9 +717,11 @@ void sun4i_tcon_mode_set(struct sun4i_tcon *tcon, case DRM_MODE_ENCODER_DSI: /* DSI is tied to special case of CPU interface */ sun4i_tcon0_mode_set_cpu(tcon, encoder, mode); + sun4i_tcon_set_mux(tcon, 0, encoder); break; case DRM_MODE_ENCODER_LVDS: sun4i_tcon0_mode_set_lvds(tcon, encoder, mode); + sun4i_tcon_set_mux(tcon, 0, encoder); break; case DRM_MODE_ENCODER_NONE: sun4i_tcon0_mode_set_rgb(tcon, encoder, mode);