Part Number: DRA72XEVM
Tool/software: Linux
Hi,
SDK: ti-processor-sdk-linux-automotive-dra7xx-evm-03.02.00.03-installer
linux: linux-4.4.45
I want to display pictures on my dra718 custom board, data_lines = 16, pixelformat = rgb565, port = VOUT2, but vout2 can not output anything except pixclk and hsyncckl.
linux recompose as follow:
<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
<*> OMAP DRM
(2) Number of CRTCs
<*> OMAP2+ Display Subsystem support --->
[*] DPI support
OMAPDRM External Display Device Drivers --->
<*> Generic DPI panel
and dtb recompose:
at dra72-evm-common.dtsi selcet lcd_fpd node's status="okay"
debug:
using modetest command,
Connectors:
id encoder status name size (mm) modes encoders
32 31 connected unknown-1 0x0 1 31
modes:
name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
720x480 56 720 800 848 910 480 492 498 533 flags: nhsync, nvsync; type: preferred, driver
props:
1 EDID:
flags: immutable blob
blobs:
value:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
and using ksmcube -a ,nothing output on the lcd.
kmscube -c 31
trying to load module omapdrm...success.
### Display [0]: CRTC = 34, Connector = 32
Mode chosen [720x480] : Clock => 27000, Vertical refresh => 56, Type => 72
Horizontal => 720, 800, 848, 910, 0
Vertical => 480, 492, 498, 533, 0
### Primary display => ConnectorId = 32, Resolution = 720x480
failed to load module: /usr/lib/gbm/gbm_dri.so: cannot open shared object file: No such file or directory
failed to load module: /usr/lib/gbm/gbm_gallium_drm.so: cannot open shared object file: No such file or directory
loaded module : gbm_pvr.so
found valid GBM backend : gbm_pvr.so
Using display 0x1 with EGL version 1.4
EGL Version "1.4 build 1.14@3699939 (MAIN)"
EGL Vendor "Imagination Technologies"
EGL Extensions "EGL_IMG_client_api_ogl EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_vg_parent_image EGL_IMG_cl_image EGL_KHR_fence_sync EGL_IMG_context_priority EGL_IMG_hibernate_process EGL_IMG_image_plane_attribs EGL_KHR_surfaceless_context EGL_KHR_wait_sync EGL_KHR_create_context EGL_WL_bind_wayland_display EGL_EXT_image_dma_buf_import"
^CHandling signal number = 2
Cleanup of GL, GBM and DRM completed
and using oscilloscope, the pixclk is 27MHZ, hsync-clk is 27kHZ, vsync-clk=0, data_line is 0HZ.
and the DSS controler register is as follow:
DISPC_CONTROL2 0x58001238 = 0x109
DISPC_CONFIG2 0x58001620 = 0x0
DISPC_TIMING_H2 0x58001400 = 0x3d04f2f
DISPC_TIMING_V2 0x58001404 = 0x2300c05
DISPC_POL_FREQ2 0x58001408 = 0x73000
DISPC_DIVISOR2 0x5800140C = 0x10006
DISPC_SIZE_LCD2 0x580013CC = 0x1df02cf
DISPC_DATA2_CYCLE1 0x580013C0 = 0x0
DISPC_DATA2_CYCLE2 0x580013C4 = 0x0
DISPC_DATA2_CYCLE3 0x580013C8 = 0x0
DISPC_CPR2_COEF_R 0x580013BC = 0x0
DISPC_CPR2_COEF_G 0x580013B8 = 0x0
DISPC_CPR2_COEF_B0x580013B4 = 0x0
what i need to do to make vout2 output vsync-clk? and display pictures on vout2?
