yocto 3.14.28 triple display LVDS0 distortion on i.MX6Q SABRE SDP

[m_c]

Triple display are HDMI+LVDS0+LVDS1

LVDS0 play video normal, but it will become distortion after LVDS1 play video.

Try kernel parameter ldb=sep0/1, ldb=spl0/1, ldb=sin0/1 and ldb=dul0/1, but still distortion.

console=ttymxc0,115200 root=/dev/mmcblk3p2 rootwait rw video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:dev=ldb,if=RGB666 video=mxcfb2:dev=ldb,if=RGB666 video=mxcfb3:off

gst-launch-1.0 playbin uri=file:///${FILE_PATHNAME1} video-sink="imxv4l2sink device=${VIDEO_DEVICE_17}" &

gst-launch-1.0 playbin uri=file:///${FILE_PATHNAME2} video-sink="imxv4l2sink device=${VIDEO_DEVICE_18}" &

gst-launch-1.0 playbin uri=file:///${FILE_PATHNAME3} video-sink="imxv4l2sink device=${VIDEO_DEVICE_20}" &

Normal

Distortion

Original Attachment has been moved to: 20151215-mcimx6qsdp-y31428101-gst-triple-display-05.txt.zip

[wumr]

hi，

  请问mxcfb和video的对应关系啊？

[qiang_li-mpu_se]

mxcfb会对应到 "/dev/fbx", 然后就会对应上/dev/videox, "/dev/fb0" 对应 "/dev/video16", "/dev/fb1" 对应 "/dev/video17" ... ...

[wumr]

例如uboot参数设置：

console=ttymxc0,115200 video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=32 ldb=spl1

video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 video=mxcfb2:dev=ldb,LDB-XGA,if=RGB24,bpp=32 

在设备树中配置lvds1为主通道，那么：

ldb1：fb0 fb1----->video16 video17

hdmi：fb2--------->video18

ldb0：fb3 fb4----->video19 video20

[qiang_li-mpu_se]

Please try attached patch, it should be OK.

[alejandrolozan1]

Hi,

Let me delve into this.

Best Regards,

Alejandro