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[HKEY_LOCAL_MACHINE\Drivers\Display\Default]

[HKEY_LOCAL_MACHINE\Drivers\Display\displayname]

Key

Type

Description

Name

STRING

Defines the name of the display, which parameters are to be used (Only in \Default).

DisableBootPars

DWORD

If set to 1, ignore the BitmapBoot-parameters.

CxScreen

DWORD

Horizontal-resolution.

CyScreen

DWORD

Vertical-resolution.

Feature

DWORD

Feature-Parameters; i.e. which GPIO to use as PWM, see: BitmapBoot Tool ( Trizeps II - V)

DisplayOn

DWORD

GPIO which turns the display on/off.

DisplayOnPol

DWORD

Polarity of DisplayOn-GPIO.

BufferStrength

DWORD

BufferStrength of the display-lines (PXA270: 0..15; PXA320: 1..7; PXA168:0..3).

Angle

DWORD

Angle ( 0, 90, 180, 270) with which the display starts.

Angle2

DWORD

Alternative Angle (0, 90, 180, 270) used by RotateScreen-applet.

...

[HKEY_LOCAL_MACHINE\Drivers\Display\Default]

[HKEY_LOCAL_MACHINE\Drivers\Display\displayname]

Key

Type

Description

Bpp

DWORD

Code Block
 Valid values: 12,16,18,24.
 Selects number of display-lines to use.

BaseFramePixelFormat

DWORD

Code Block
 Selects Pixel-Format used for framebuffer:
 4: RGB565 (16Bpp)
 8: RGB8880 (24Bpp)

ClockDivider

DWORD

Code Block
 See Marvell PXA168 Developers Manual.
 Typical this is set to (0x80000000 | divider);
 where divider = 312MHz / PCLK-frequency.

HBackPorch

DWORD

Horizontal Back-Porch in Pixel-Clks

HFrontPorch

DWORD

Horizontal Front-Porch in Pixel-Clks

HSyncWidth

DWORD

Horizontal Sync-Width in Pixel-Clks

VBackPorch

DWORD

Vertical Back-Porch in Line-Clks

VFrontPorch

DWORD

Vertical Front-Porch in Line-Clks

VSyncWidth

DWORD

Vertical Sync-Width in Line-Clks

SyncPolarity

DWORD

Code Block
 See Marvell PXA168 Developers Manual (LCD_SPU_DUMB_CTRL).
 0x02  : Pixel-Clock-Polarity ( 0: falling edge, 1: rising edge)
 0x04  : HSync-Polarity ( 0: active high, 1: active low)
 0x08  : VSync-Polarity ( 0: active high, 1: active low)
 0x10  : DENA-Polarity  ( 0: active high, 1: active low)

See Also

BitmapBoot Tool ( Trizeps II - V),
Connect a Display to a Trizeps,
Connect a LVDS Display to a Trizeps