Part Number: TDA4VMXEVM
Hi,
I am trying to connect Full HD display to J7-evm (TDA4VMXEVM, common processor board DISPLAY0 (DP) connector) through the DP-to-miniDP cable.
I'm using built with PSDKLA 06_01_01_02 version.
Despite being solved in the question here (PSDKLA 06_01_00_05), it is still VGA 1024x768 in 06_01_01_02 version.
If I check resolution mode,
root@j7-evm:~# kmsprint
[ 1700.114791] cdns-mhdp a000000.dp-bridge: [drm:cdns_mhdp_get_edid_block [mhdp8546]] *ERROR* get block[0] edid failed: -22
[ 1700.125650] cdns-mhdp a000000.dp-bridge: [drm:cdns_mhdp_get_modes [mhdp8546]] *ERROR* Failed to read EDID
Connector 0 (35) DP-1 (connected)
Encoder 0 (34) NONE
Crtc 0 (33) 1024x768 65.000 1024/24/136/160 768/3/6/29 60 (60.00)
Plane 0 (28) fb-id: 59 (crtcs: 0) 0,0 1024x768 -> 0,0 1024x768 (AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 AR15 AB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12)
FB 59 1024x768
root@j7-evm:~# cat /var/volatile/log/weston.log
Date: 2019-12-12 UTC
[21:28:58.595] weston 5.0.0
wayland.freedesktop.org
Bug reports to: gitlab.freedesktop.org/.../
Build: unknown (not built from git or tarball)
[21:28:58.595] Command line: weston --idle-time=0
[21:28:58.595] OS: Linux, 4.19.73-g0cabba2b47, #1 SMP PREEMPT Fri Jul 10 13:53:35 KST 2020, aarch64
[21:28:58.597] Using config file '/etc//weston.ini'
[21:28:58.600] Output repaint window is 7 ms maximum.
[21:28:58.608] Loading module '/usr/lib/libweston-5/drm-backend.so'
[21:28:58.615] initializing drm backend
[21:28:58.703] using /dev/dri/card0
[21:28:58.703] DRM: supports universal planes
[21:28:58.703] DRM: supports atomic modesetting
[21:28:58.703] DRM: supports picture aspect ratio
[21:28:58.706] Loading module '/usr/lib/libweston-5/gl-renderer.so'
...<skip>...
[21:28:59.085] DRM: head 'DP-1' found, connector 35 is connected, EDID make 'unknown', model 'unknown', serial 'unknown'
[21:28:59.085] Registered plugin API 'weston_drm_output_api_v1' of size 24
[21:28:59.085] Chosen EGL config details:
RGBA bits: 8 8 8 0
swap interval range: 1 - 1
[21:28:59.085] No backlight control for output 'DP-1'
[21:28:59.085] Output DP-1 (crtc 33) video modes:
1024x768@60.0, current, 65.0 MHz
800x600@60.3, 40.0 MHz
800x600@56.2, 36.0 MHz
848x480@60.0, 33.8 MHz
640x480@59.9, 25.2 MHz
Available maximum resolution is 1024x768 only.
How can i set resolution mode to HD 720p or FHD 1080p ?
If I check loaded driver by "lsmod" command, It can be seen that mhdp8546 driver is loaded. (On target, "/lib/modules/4.19.73-g0cabba2b47/kernel/drivers/gpu/drm/bridge/mhdp8546.ko" )
The driver request firmware "/lib/firmware/cadence/mhdp8546.bin" on target, and the firmware it is.
