From b4f5b0e4807c3892093038412dbfa80b32947dc3 Mon Sep 17 00:00:00 2001 From: Zhang Yubing Date: Fri, 1 Nov 2024 15:20:50 +0800 Subject: [PATCH] rockchip/drm: dw-dp: dump some info when can't get bus format Change-Id: I25c30ff4ab590cbb78e772fee0eda03322dbf5e9 Signed-off-by: Zhang Yubing --- drivers/gpu/drm/rockchip/dw-dp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw-dp.c b/drivers/gpu/drm/rockchip/dw-dp.c index b49906978ef2..ec2588f5cd77 100644 --- a/drivers/gpu/drm/rockchip/dw-dp.c +++ b/drivers/gpu/drm/rockchip/dw-dp.c @@ -4652,6 +4652,14 @@ static u32 *dw_dp_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, *num_output_fmts = j; + if (*num_output_fmts == 0) { + dev_warn(dp->dev, "here is not satisfied the require bus format\n"); + dev_info(dp->dev, + "max bpc:%d, max fmt:%x, lanes:%d, rate:%d, bpc:%d, fmt:%d, eotf:%d\n", + conn_state->max_bpc, di->color_formats, link->lanes, link->max_rate, + dp_state->bpc, dp_state->color_format, dp->eotf_type); + } + return output_fmts; }