diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dp.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dp.c b/drivers/video/fbdev/msm/mdss_dp.c index bd8e710870f7..e0e24e238d94 100644 --- a/drivers/video/fbdev/msm/mdss_dp.c +++ b/drivers/video/fbdev/msm/mdss_dp.c @@ -1673,6 +1673,19 @@ static void mdss_dp_set_default_resolution(struct mdss_dp_drv_pdata *dp) DEFAULT_VIDEO_RESOLUTION, true); } +static void mdss_dp_set_default_link_parameters(struct mdss_dp_drv_pdata *dp) +{ + const int default_max_link_rate = 0x6; + const int default_max_lane_count = 1; + + dp->dpcd.max_lane_count = default_max_lane_count; + dp->dpcd.max_link_rate = default_max_link_rate; + + pr_debug("max_link_rate = 0x%x, max_lane_count= 0x%x\n", + dp->dpcd.max_link_rate, + dp->dpcd.max_lane_count); +} + static int mdss_dp_edid_init(struct mdss_panel_data *pdata) { struct mdss_dp_drv_pdata *dp_drv = NULL; @@ -1878,12 +1891,16 @@ static int mdss_dp_process_hpd_high(struct mdss_dp_drv_pdata *dp) pr_debug("edid read error, setting default resolution\n"); mdss_dp_set_default_resolution(dp); + mdss_dp_set_default_link_parameters(dp); goto notify; } ret = hdmi_edid_parser(dp->panel_data.panel_info.edid_data); if (ret) { - pr_err("edid parse failed\n"); + pr_err("edid parse failed, setting default resolution\n"); + + mdss_dp_set_default_resolution(dp); + mdss_dp_set_default_link_parameters(dp); goto notify; } |