The rk3576 VOP2 has three video ports. VP0 and VP1 each have a Cluster window that acts as their primary plane, but VP2 - the port wired to the DesignWare DP controller - only has Esmart windows, all typed DRM_PLANE_TYPE_OVERLAY.
The driver requires every active video port to own a DRM_PLANE_TYPE_PRIMARY plane. When VP2 is driven (a board that uses the DP output) it finds none, CRTC creation returns -ENOENT, and the whole VOP2 bind fails, taking down the entire display subsystem. Promote Esmart0 to DRM_PLANE_TYPE_PRIMARY so VP2 has a primary plane. Esmart0's possible_vp_mask already includes VP2 (BIT(2)) and its layer_sel_id[2] = 0 is a valid VP2 layer slot, while VP0 keeps Cluster0 as its primary, so the existing VP0/VP1 assignments are unchanged: VP0: primary=Cluster0, overlay=Esmart2 VP1: primary=Cluster1, overlays=Esmart1, Esmart3 VP2: primary=Esmart0, overlays=Esmart1, Esmart2, Esmart3 Tested on Anbernic RG Vita Pro (rk3576) with the DP alt-mode output. Signed-off-by: Tomonori Nakagawa <[email protected]> --- drivers/gpu/drm/rockchip/rockchip_vop2_reg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_vop2_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop2_reg.c index 17eda592b..e7d013dc3 100644 --- a/drivers/gpu/drm/rockchip/rockchip_vop2_reg.c +++ b/drivers/gpu/drm/rockchip/rockchip_vop2_reg.c @@ -894,7 +894,7 @@ static const struct vop2_win_data rk3576_vop_win_data[] = { .format_modifiers = format_modifiers, .layer_sel_id = { 2, 0xf, 0, 0xf }, .supported_rotations = DRM_MODE_REFLECT_Y, - .type = DRM_PLANE_TYPE_OVERLAY, + .type = DRM_PLANE_TYPE_PRIMARY, .axi_bus_id = 0, .axi_yrgb_r_id = 0x10, .axi_uv_r_id = 0x11, -- 2.54.0
