Openmoko Bug #1812: GTA01 QVGA framebuffer has lines and bad colour

[Openmoko Public Trac]

#1812: GTA01 QVGA framebuffer has lines and bad colour
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 Reporter:  usbhostman  |        Owner:  hardware
     Type:  defect      |       Status:  new     
 Priority:  normal      |    Milestone:  FSO     
Component:  hardware    |      Version:  GTA01Bv4
 Severity:  normal      |   Resolution:          
 Keywords:              |     Blocking:          
Blockedby:              |  
------------------------+---------------------------------------------------

Comment(by usbhostman):

 The fb.modes file says this:-

 # Timings for GTA01 VGA and QVGA mode

 mode "480x640"
     # D: 26.000 MHz, H: 43.334 kHz, V: 65.657 Hz
     geometry 480 640 480 640 16
     timings 38461 104 8 2 16 8 2
     accel false
 endmode

 mode "vga"
     # D: 26.000 MHz, H: 43.334 kHz, V: 65.657 Hz
     geometry 480 640 480 640 16
     timings 38461 104 8 2 16 8 2
     accel false
 endmode

 mode "240x320"
     # D: 8.475 MHz, H: 24.635 kHz, V: 75.569 Hz
     geometry 240 320 240 320 16
     timings 118000 88 8 2 2 8 2
     accel false
 endmode

 mode "qvga"
     # D: 8.475 MHz, H: 24.635 kHz, V: 75.569 Hz
     geometry 240 320 240 320 16
     timings 118000 88 8 2 2 8 2
     accel false
 endmode

 but if I change to qvga mode fbset says:-

 mode "240x320-204"
     # D: 25.000 MHz, H: 69.444 kHz, V: 204.248 Hz
     geometry 240 320 240 320 16
     timings 40000 104 8 2 16 8 2
     rgba 5/11,6/5,5/0,0/0
 endmode

 while in vga mode it says:-

 mode "480x640-63"
     # D: 25.000 MHz, H: 41.667 kHz, V: 63.131 Hz
     geometry 480 640 480 640 16
     timings 40000 104 8 2 16 8 2
     rgba 5/11,6/5,5/0,0/0
 endmode

 So it seems as if fbset is ill. I am using FSO milestone 2.

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Ticket URL: <https://docs.openmoko.org/trac/ticket/1812#comment:1>
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