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Linux/TMS320DM368: DM368 IPNC RDK 5.1 Linux frame buffer driver

Part Number: TMS320DM368

Tool/software: Linux

Hi TI,

I am upgrading our board from DM368 IPNC RDK 3.1 to DM368 IPNC RDK 5.1 for our customer.

For the current topic: LCD panel.

I can see the correct messages from the kernel booting.

[    1.410971] Linux media interface: v0.10
[    1.415801] Linux video capture interface: v2.00
[    1.422803] vpbe-osd vpbe-osd: OSD sub device probe success
[    1.429257] vpbe-venc vpbe-venc: VENC sub device probe success
[    1.436156] vpbe-v4l2 vpbe-v4l2: vpbe v4l2 device registered
[    1.442359] Setting default output to Composite
[    1.446923] Setting default mode to ntsc
[    1.450946] vpbe-v4l2 vpbe-v4l2: Trying to register VPBE display device.
[    1.457791] vpbe-v4l2 vpbe-v4l2: layer=c20d8e00,layer->video_dev=c20d8ee8
[    1.465860] vpbe-v4l2 vpbe-v4l2: Trying to register VPBE display device.
[    1.472821] vpbe-v4l2 vpbe-v4l2: layer=c20d8200,layer->video_dev=c20d82e8
[    1.488630] vpbe-fb vpbe-fb: dm_osd0_fb: 640x480x16@0,0 with framebuffer size 1200KB
[    1.503995] vpbe-fb vpbe-fb: dm_vid0_fb: 640x480x16@0,0 with framebuffer size 1350KB
[    1.516281] vpbe-fb vpbe-fb: dm_osd1_fb: 720x480x4@0,0 with framebuffer size 675KB
[    1.524196] VPBE FB Driver probe success

The interface of LCD panel is Composite video(NTSC).

I try kernel logo and run the command dd if=/dev/zero of=/dev/fb0 bs=640 count=480.

It's not working to clean LCD panel.(there is no error message on the console.)

 1. Do you have any suggestion to help me?

2. For the boot cmd line: davinci_enc_mngr.ch0_output=COMPOSITE davinci_enc_mngr.ch0_mode=NTSC

    For IPNC_RDK 5.1, how to set them? Because DaVinci Display Manager(sysfs) seem to disappear.

Many Thanks.

S.K.