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Passive Mode LCD Setting

Other Parts Discussed in Thread: DM3730, SYSCONFIG

Hello,

   We're trying to set the DISPC on a DM3730 for a Passive LCD 4bit (http://www.planarembedded.com/electroluminescent-display/el/el160-80-50/) in u-boot. The same u-boot works fine with Active Displays. For some reason the passive settings are not putting out data on the data lines dss_data[0:23].  We see Pixel Clock, VSync, HSync toggling according to specs, but nothing on data lines when framebuffer is filled with 0xFF.

Below are the settings used. Any idea why Passive Mode DATA are not coming out of controller? Thanks!

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[0x48004e00] CM_FCLKEN_DSS = 0x00000005

[0x48004e10] CM_ICLKEN_DSS = 0x00000001

[0x48050010] DSS_SYSCONFIG = 0x00000001

[0x48050014] DSS_SYSSTATUS = 0x00000001

[0x48050018] DSS_IRQSTATUS = 0x00000000

[0x48050040] DSS_CONTROL = 0x00000078

[0x4805005c] DSS_CLK_STATUS = 0x00000081

[0x48050410] DISPC_SYSCONFIG = 0x00000001

[0x48050414] DISPC_SYSSTATUS = 0x00000001

[0x48050418] DISPC_IRQSTATUS = 0x0000c32e

[0x4805041c] DISPC_IRQENABLE = 0x00000000

[0x48050440] DISPC_CONTROL = 0x08018207

[0x48050444] DISPC_CONFIG = 0x00000000

[0x4805044c] DISPC_DEFAULT_COLOR_0 = 0x00ff8000

[0x48050450] DISPC_DEFAULT_COLOR_1 = 0x00000000

[0x48050454] DISPC_TRANSP_COLOR_0 = 0x00000000

[0x48050458] DISPC_TRANSP_COLOR_1 = 0x00000000

[0x4805045c] DISPC_LINE_STATUS = 0x00000040

[0x48050460] DISPC_LINE_NUMBER = 0x00000000

[0x48050464] DISPC_TIMING_H = 0x00100101

[0x48050468] DISPC_TIMING_V = 0x00100101

[0x4805046c] DISPC_POL_FREQ = 0x00000050

[0x48050470] DISPC_DIVISOR = 0x00010085

[0x48050474] DISPC_GLOBAL_ALPHA = 0x00000000

[0x48050478] DISPC_SIZE_DIG = 0x00000000

[0x4805047c] DISPC_SIZE_LCD = 0x004f009f

[0x48050480] DISPC_GFX_BA0 = 0x87000000

[0x48050484] DISPC_GFX_BA1 = 0x87000000

[0x48050488] DISPC_GFX_POSITION = 0x00000000

[0x4805048c] DISPC_GFX_SIZE = 0x004f009f                      

[0x480504a0] DISPC_GFX_ATTRIBUTES = 0x00000001

[0x480504a4] DISPC_GFX_FIFO_THRESHOLD = 0x0bff05ff

[0x480504a8] DISPC_GFX_FIFO_SIZE_STATUS = 0x00000400

[0x480504ac] DISPC_GFX_ROW_INC = 0x00000001

[0x480504b0] DISPC_GFX_PIXEL_INC = 0x00000001

[0x480504b4] DISPC_GFX_WINDOW_SKIP = 0x00000000

[0x480504b8] DISPC_GFX_TABLE_BA = 0x00000000

[0x4805062c] DISPC_GFX_PRELOAD = 0x000000e0

[0x480504d4] DISPC_DATA_CYCLE0 = 0x00000400

[0x480504d8] DISPC_DATA_CYCLE1 = 0x00000001

[0x480504dc] DISPC_DATA_CYCLE2 = 0x00000001

[0x48050620] DISPC_CPR_COEF_R = 0x00000000

[0x48050624] DISPC_CPR_COEF_G = 0x00000000

[0x48050628] DISPC_CPR_COEF_B = 0x00000000