diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_hdmi_edid.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/mdss_hdmi_edid.c b/drivers/video/fbdev/msm/mdss_hdmi_edid.c index 502bc1570609..37c4be6135aa 100644 --- a/drivers/video/fbdev/msm/mdss_hdmi_edid.c +++ b/drivers/video/fbdev/msm/mdss_hdmi_edid.c @@ -1510,6 +1510,17 @@ static void hdmi_edid_detail_desc(struct hdmi_edid_ctrl *edid_ctrl, */ active_h = ((((u32)data_buf[0x4] >> 0x4) & 0xF) << 8) | data_buf[0x2]; + /* + * It is possible that a sink might try to fit in the resolution + * which has an active_h of 4096 into a DTD. However, DTD has only + * 12 bit to represent active_h which would limit the maximum value + * to 4095. If such a case is detected, set the active_h explicitly + * to 4096. + */ + if (active_h == 0xFFF) { + pr_debug("overriding h_active to 4096\n"); + active_h++; + } /* * EDID_TIMING_DESC_H_BLANK[0x3]: Relative Offset to the EDID detailed |