AM625: How to output dual channels with same content on SDK10.0.y using eglfs_kms plugin

gao fuyi

Part Number: AM625

Tool/software: Linux SDK 10.00.07.04

On our customized AM6252 board, use dual display channels to display same content: one is OLDI and the other is RGB-to-HDMI, both resolution are 1920x1080.

1. On SDK 08.06.00.42, using the SDK default file system (QT5.14.2) and Kernel V5.10.y, can display dual channels simultaneously using the eglfs_kms plugin.

The configuration and execution steps are as follows:

root@am62xx-evm:~# cd /usr/share/qt5/examples/opengl/textures/

root@am62xx-evm:/usr/share/qt5/examples/opengl/textures# export
export CREDENTIALS_DIRECTORY="/run/credentials/serial-getty@ttyS2.service"
export EDITOR="vi"
export HOME="/root"
export HUSHLOGIN="FALSE"
export INVOCATION_ID="a23774652db74caf9ec3104291c379d7"
export LANG="C"
export LOGNAME="root"
export MAIL="/var/spool/mail/root"
export MOTD_SHOWN="pam"
export OLDPWD="/root"
export OPIEDIR
export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin"
export PS1="\\u@\\h:\\w\\\$ "
export PWD="/usr/share/qt5/examples/opengl/textures"
export QPEDIR
export QTDIR
export QTWEBENGINE_CHROMIUM_FLAGS="--disable-seccomp-filter-sandbox"
export QTWEBENGINE_DISABLE_SANDBOX="1"
export QT_LOGGING_RULES="qt.qpa.eglfs.kms=true"
export QT_QPA_EGLFS_ALWAYS_SET_MODE="1"
export QT_QPA_EGLFS_INTEGRATION="eglfs_kms"
export QT_QPA_EGLFS_KMS_CONFIG="/etc/qt5/eglfs_kms_cfg.json"
export QT_WAYLAND_SHELL_INTEGRATION="xdg-shell"
export SHELL="/bin/sh"
export SHLVL="1"
export SSL_CERT_FILE="/etc/ssl/certs/ca-certificates.crt"
export SYSTEMD_EXEC_PID="529"
export TERM="vt220"
export USER="root"

root@am62xx-evm:/usr/share/qt5/examples/opengl/textures# cat /etc/qt5/eglfs_kms_cfg.json
{
"device": "/dev/dri/card0",
"hwcursor": false,
"pbuffers": true,
"outputs": [
{ "name": "LVDS1", "mode": "1920x1080" },
{ "name": "HDMI1", "mode": "1920x1080", "clones": "LVDS1" }
]
}

root@am62xx-evm:/usr/share/qt5/examples/opengl/textures# ./textures -platform eglfs

2.Following the same steps as above on SDK 10.00.07.04 with SDK default file system (QT5.15.13) with Kernel V6.6.y, reports errors as below. The two channel display can't run up.

root@am62xx-evm:/usr/share/qt5/examples/opengl/textures# ./textures -platform eglfs     
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
qt.qpa.eglfs.kms: Loading KMS setup from "/etc/qt5/eglfs_kms_cfg.json"
qt.qpa.eglfs.kms: Requested configuration (some settings may be ignored):
        headless: false 
        hwcursor: false 
        pbuffers: true 
        separateScreens: false 
        virtualDesktopLayout: 0 
        outputs: QMap(("HDMI1", QMap(("clones", QVariant(QString, "LVDS1"))("mode", QVariant(QString, "1920x1080"))("name", QVariant(QString, "HDMI1"))))("LVDS1", QMap(("mode", QVariant(QString, "1920x1080"))("name", QVariant(QString, "LVDS1")))))
qt.qpa.eglfs.kms: New DRM/KMS via GBM integration created
qt.qpa.eglfs.kms: platformInit: Opening DRM device
qt.qpa.eglfs.kms: GBM: Using DRM device "/dev/dri/card0" specified in config file
qt.qpa.eglfs.kms: Using backend-provided DRM device /dev/dri/card0
qt.qpa.eglfs.kms: Creating GBM device for file descriptor 5 obtained from "/dev/dri/card0"
qt.qpa.eglfs.kms: Using dedicated drm event reading thread
qt.qpa.eglfs.kms: Initalizing event reader for device 0x326d1280 fd 5
qt.qpa.eglfs.kms: Querying EGLDisplay
qt.qpa.eglfs.kms: Event reader thread: entering event loop
qt.qpa.eglfs.kms: Atomic reported as supported
qt.qpa.eglfs.kms: Atomic disabled
qt.qpa.eglfs.kms: Found 2 planes
qt.qpa.eglfs.kms: plane 0: id = 31 countFormats = 29 possibleCrtcs = 0x3 supported formats = AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12 
qt.qpa.eglfs.kms:   property 0: id = 8 name = 'type'
qt.qpa.eglfs.kms:   type is ENUM, value is 1, possible values are:
qt.qpa.eglfs.kms:     enum 0: Overlay - 0
qt.qpa.eglfs.kms:     enum 1: Primary - 1
qt.qpa.eglfs.kms:     enum 2: Cursor - 2
qt.qpa.eglfs.kms:   property 1: id = 17 name = 'FB_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 2: id = 18 name = 'IN_FENCE_FD'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is -1, possible values are:
qt.qpa.eglfs.kms:     -1
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 3: id = 20 name = 'CRTC_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 4: id = 13 name = 'CRTC_X'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     -2147483648
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 5: id = 14 name = 'CRTC_Y'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     -2147483648
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 6: id = 15 name = 'CRTC_W'
qt.qpa.eglfs.kms:   type is RANGE, value is 1920, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 7: id = 16 name = 'CRTC_H'
qt.qpa.eglfs.kms:   type is RANGE, value is 1080, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 8: id = 9 name = 'SRC_X'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 9: id = 10 name = 'SRC_Y'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 10: id = 11 name = 'SRC_W'
qt.qpa.eglfs.kms:   type is RANGE, value is 125829120, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 11: id = 12 name = 'SRC_H'
qt.qpa.eglfs.kms:   type is RANGE, value is 70778880, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 12: id = 30 name = 'IN_FORMATS'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 13: id = 33 name = 'zpos'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 14: id = 34 name = 'COLOR_ENCODING'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: ITU-R BT.601 YCbCr - 0
qt.qpa.eglfs.kms:     enum 1: ITU-R BT.709 YCbCr - 1
qt.qpa.eglfs.kms:   property 15: id = 35 name = 'COLOR_RANGE'
qt.qpa.eglfs.kms:   type is ENUM, value is 1, possible values are:
qt.qpa.eglfs.kms:     enum 0: YCbCr limited range - 0
qt.qpa.eglfs.kms:     enum 1: YCbCr full range - 1
qt.qpa.eglfs.kms:   property 16: id = 36 name = 'alpha'
qt.qpa.eglfs.kms:   type is RANGE, value is 65535, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     65535
qt.qpa.eglfs.kms:   property 17: id = 37 name = 'pixel blend mode'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: Pre-multiplied - 0
qt.qpa.eglfs.kms:     enum 1: Coverage - 1
qt.qpa.eglfs.kms: plane 1: id = 41 countFormats = 29 possibleCrtcs = 0x3 supported formats = AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12 
qt.qpa.eglfs.kms:   property 0: id = 8 name = 'type'
qt.qpa.eglfs.kms:   type is ENUM, value is 1, possible values are:
qt.qpa.eglfs.kms:     enum 0: Overlay - 0
qt.qpa.eglfs.kms:     enum 1: Primary - 1
qt.qpa.eglfs.kms:     enum 2: Cursor - 2
qt.qpa.eglfs.kms:   property 1: id = 17 name = 'FB_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 2: id = 18 name = 'IN_FENCE_FD'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is -1, possible values are:
qt.qpa.eglfs.kms:     -1
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 3: id = 20 name = 'CRTC_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 4: id = 13 name = 'CRTC_X'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     -2147483648
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 5: id = 14 name = 'CRTC_Y'
qt.qpa.eglfs.kms:   type is SIGNED_RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     -2147483648
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 6: id = 15 name = 'CRTC_W'
qt.qpa.eglfs.kms:   type is RANGE, value is 1920, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 7: id = 16 name = 'CRTC_H'
qt.qpa.eglfs.kms:   type is RANGE, value is 1080, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     2147483647
qt.qpa.eglfs.kms:   property 8: id = 9 name = 'SRC_X'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 9: id = 10 name = 'SRC_Y'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 10: id = 11 name = 'SRC_W'
qt.qpa.eglfs.kms:   type is RANGE, value is 125829120, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 11: id = 12 name = 'SRC_H'
qt.qpa.eglfs.kms:   type is RANGE, value is 70778880, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms:   property 12: id = 30 name = 'IN_FORMATS'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 13: id = 43 name = 'zpos'
qt.qpa.eglfs.kms:   type is RANGE, value is 1, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 14: id = 44 name = 'COLOR_ENCODING'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: ITU-R BT.601 YCbCr - 0
qt.qpa.eglfs.kms:     enum 1: ITU-R BT.709 YCbCr - 1
qt.qpa.eglfs.kms:   property 15: id = 45 name = 'COLOR_RANGE'
qt.qpa.eglfs.kms:   type is ENUM, value is 1, possible values are:
qt.qpa.eglfs.kms:     enum 0: YCbCr limited range - 0
qt.qpa.eglfs.kms:     enum 1: YCbCr full range - 1
qt.qpa.eglfs.kms:   property 16: id = 46 name = 'alpha'
qt.qpa.eglfs.kms:   type is RANGE, value is 65535, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     65535
qt.qpa.eglfs.kms:   property 17: id = 47 name = 'pixel blend mode'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: Pre-multiplied - 0
qt.qpa.eglfs.kms:     enum 1: Coverage - 1
qt.qpa.eglfs.kms: "LVDS1" mode count: 1 crtc index: 0 crtc id: 38
qt.qpa.eglfs.kms: mode 0 1920 x 1080 @ 59 hz
qt.qpa.eglfs.kms: Selected mode 0 : 1920 x 1080 @ 59 hz for output "LVDS1"
qt.qpa.eglfs.kms: Physical size is QSizeF(344, 193) mm for output "LVDS1"
qt.qpa.eglfs.kms: Format is 34325258 requested_by_user = false for output "LVDS1"
qt.qpa.eglfs.kms: Output "LVDS1" framebuffer size is  QSize(1920, 1080)
qt.qpa.eglfs.kms:   property 0: id = 1 name = 'EDID'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 1: id = 2 name = 'DPMS'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: On - 0
qt.qpa.eglfs.kms:     enum 1: Standby - 1
qt.qpa.eglfs.kms:     enum 2: Suspend - 2
qt.qpa.eglfs.kms:     enum 3: Off - 3
qt.qpa.eglfs.kms:   property 2: id = 5 name = 'link-status'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: Good - 0
qt.qpa.eglfs.kms:     enum 1: Bad - 1
qt.qpa.eglfs.kms:   property 3: id = 6 name = 'non-desktop'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 4: id = 4 name = 'TILE'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 5: id = 20 name = 'CRTC_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 0: id = 22 name = 'ACTIVE'
qt.qpa.eglfs.kms:   type is RANGE, value is 1, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 1: id = 23 name = 'MODE_ID'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 2: id = 19 name = 'OUT_FENCE_PTR'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     18446744073709551615
qt.qpa.eglfs.kms:   property 3: id = 24 name = 'VRR_ENABLED'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 4: id = 27 name = 'CTM'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 5: id = 28 name = 'GAMMA_LUT'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 6: id = 29 name = 'GAMMA_LUT_SIZE'
qt.qpa.eglfs.kms:   type is RANGE, value is 256, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms: Output LVDS1 can use 2 planes: 31 41 
qt.qpa.eglfs.kms: Chose plane 31 for output LVDS1 (crtc id 38) (may not be applicable)
qt.qpa.eglfs.kms: Using plain OpenGL mouse cursor
qt.qpa.eglfs.kms: No EDID data for output "LVDS1"
qt.qpa.eglfs.kms: "HDMI1" mode count: 35 crtc index: 1 crtc id: 48
qt.qpa.eglfs.kms: mode 0 1920 x 1080 @ 60 hz
qt.qpa.eglfs.kms: mode 1 1920 x 1080 @ 60 hz
qt.qpa.eglfs.kms: mode 2 1920 x 1080 @ 60 hz
qt.qpa.eglfs.kms: mode 3 1920 x 1080 @ 50 hz
qt.qpa.eglfs.kms: mode 4 1680 x 1050 @ 60 hz
qt.qpa.eglfs.kms: mode 5 1600 x 900 @ 60 hz
qt.qpa.eglfs.kms: mode 6 1280 x 1024 @ 75 hz
qt.qpa.eglfs.kms: mode 7 1280 x 1024 @ 72 hz
qt.qpa.eglfs.kms: mode 8 1280 x 1024 @ 60 hz
qt.qpa.eglfs.kms: mode 9 1440 x 900 @ 75 hz
qt.qpa.eglfs.kms: mode 10 1440 x 900 @ 60 hz
qt.qpa.eglfs.kms: mode 11 1366 x 768 @ 60 hz
qt.qpa.eglfs.kms: mode 12 1280 x 800 @ 60 hz
qt.qpa.eglfs.kms: mode 13 1152 x 864 @ 75 hz
qt.qpa.eglfs.kms: mode 14 1280 x 768 @ 60 hz
qt.qpa.eglfs.kms: mode 15 1280 x 720 @ 60 hz
qt.qpa.eglfs.kms: mode 16 1280 x 720 @ 60 hz
qt.qpa.eglfs.kms: mode 17 1280 x 720 @ 60 hz
qt.qpa.eglfs.kms: mode 18 1280 x 720 @ 50 hz
qt.qpa.eglfs.kms: mode 19 1024 x 768 @ 75 hz
qt.qpa.eglfs.kms: mode 20 1024 x 768 @ 70 hz
qt.qpa.eglfs.kms: mode 21 1024 x 768 @ 60 hz
qt.qpa.eglfs.kms: mode 22 800 x 600 @ 75 hz
qt.qpa.eglfs.kms: mode 23 800 x 600 @ 72 hz
qt.qpa.eglfs.kms: mode 24 800 x 600 @ 60 hz
qt.qpa.eglfs.kms: mode 25 720 x 576 @ 50 hz
qt.qpa.eglfs.kms: mode 26 720 x 480 @ 60 hz
qt.qpa.eglfs.kms: mode 27 720 x 480 @ 60 hz
qt.qpa.eglfs.kms: mode 28 640 x 480 @ 75 hz
qt.qpa.eglfs.kms: mode 29 640 x 480 @ 73 hz
qt.qpa.eglfs.kms: mode 30 640 x 480 @ 67 hz
qt.qpa.eglfs.kms: mode 31 640 x 480 @ 60 hz
qt.qpa.eglfs.kms: mode 32 640 x 480 @ 60 hz
qt.qpa.eglfs.kms: mode 33 640 x 480 @ 60 hz
qt.qpa.eglfs.kms: mode 34 720 x 400 @ 70 hz
qt.qpa.eglfs.kms: Selected mode 0 : 1920 x 1080 @ 60 hz for output "HDMI1"
qt.qpa.eglfs.kms: Physical size is QSizeF(530, 290) mm for output "HDMI1"
qt.qpa.eglfs.kms: Format is 34325258 requested_by_user = false for output "HDMI1"
qt.qpa.eglfs.kms: Output "HDMI1"  clones output  "LVDS1"
qt.qpa.eglfs.kms: Output "HDMI1" framebuffer size is  QSize(1920, 1080)
qt.qpa.eglfs.kms:   property 0: id = 1 name = 'EDID'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 1: id = 2 name = 'DPMS'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: On - 0
qt.qpa.eglfs.kms:     enum 1: Standby - 1
qt.qpa.eglfs.kms:     enum 2: Suspend - 2
qt.qpa.eglfs.kms:     enum 3: Off - 3
qt.qpa.eglfs.kms:   property 2: id = 5 name = 'link-status'
qt.qpa.eglfs.kms:   type is ENUM, value is 0, possible values are:
qt.qpa.eglfs.kms:     enum 0: Good - 0
qt.qpa.eglfs.kms:     enum 1: Bad - 1
qt.qpa.eglfs.kms:   property 3: id = 6 name = 'non-desktop'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 4: id = 4 name = 'TILE'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 5: id = 20 name = 'CRTC_ID'
qt.qpa.eglfs.kms:   type is OBJECT
qt.qpa.eglfs.kms:   property 0: id = 22 name = 'ACTIVE'
qt.qpa.eglfs.kms:   type is RANGE, value is 1, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 1: id = 23 name = 'MODE_ID'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 2: id = 19 name = 'OUT_FENCE_PTR'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     18446744073709551615
qt.qpa.eglfs.kms:   property 3: id = 24 name = 'VRR_ENABLED'
qt.qpa.eglfs.kms:   type is RANGE, value is 0, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     1
qt.qpa.eglfs.kms:   property 4: id = 27 name = 'CTM'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 5: id = 28 name = 'GAMMA_LUT'
qt.qpa.eglfs.kms:   type is BLOB
qt.qpa.eglfs.kms:   property 6: id = 29 name = 'GAMMA_LUT_SIZE'
qt.qpa.eglfs.kms:   type is RANGE, value is 256, possible values are:
qt.qpa.eglfs.kms:     0
qt.qpa.eglfs.kms:     4294967295
qt.qpa.eglfs.kms: Output HDMI1 can use 2 planes: 31 41 
qt.qpa.eglfs.kms: Chose plane 41 for output HDMI1 (crtc id 48) (may not be applicable)
qt.qpa.eglfs.kms: Using plain OpenGL mouse cursor
qt.qpa.eglfs.kms: EDID data for output "HDMI1": identifier '', manufacturer 'XMI', model 'Redmi Monitor', serial '2804801185200', physical size: 530.00x290.00
qt.qpa.eglfs.kms: Sorted screen list: QVector(OrderedScreen(QPlatformScreen=0x32705960 ("LVDS1") : 2147483647 / QPoint(0,0) / primary: false), OrderedScreen(QPlatformScreen=0x32710cb0 ("HDMI1") : 2147483647 / QPoint(0,0) / primary: false))
qt.qpa.eglfs.kms: "LVDS1" is cloned by QVector(0x32710cb0)
qt.qpa.eglfs.kms: "HDMI1" clones 0x32705960
qt.qpa.eglfs.kms: Adding QPlatformScreen 0x32705960 ( "LVDS1" ) to QPA with geometry QRect(0,0 1920x1080) and isPrimary= false
qt.qpa.eglfs.kms: Adding QPlatformScreen 0x32710cb0 ( "HDMI1" ) to QPA with geometry QRect(0,0 1920x1080) and isPrimary= false
qt.qpa.eglfs.kms: Creating gbm_surface for screen LVDS1
qt.qpa.eglfs.kms: Got native format 36314752 from eglGetConfigAttrib() with return code true
qt.qpa.eglfs.kms: Adding FB, size 1920x1080, DRM format 0x36314752
qt.qpa.eglfs.kms: Setting mode for screen LVDS1
qt.qpa.eglfs.kms: Setting mode for screen HDMI1
qt.qpa.eglfs.kms: Adding FB, size 1920x1080, DRM format 0x36314752
qt.qpa.eglfs.kms: Adding FB, size 1920x1080, DRM format 0x36314752
qt.qpa.eglfs.kms: Adding FB, size 1920x1080, DRM format 0x36314752
Could not queue DRM page flip for clone screen LVDS1 (Device or resource busy)
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!

9 months ago

0 Krunal Bhargav34 9 months ago

TI__Mastermind 44735 points

Hi,

Can you check with Qt community on any limitations?

Regards,
Krunal

0 gao fuyi 8 months ago in reply to Krunal Bhargav34

Prodigy 40 points

Dear Krunal,

In the case of using QT, in addition to the above method, there are other ways to achieve dual screen display?

Best regards,
gao fuyi.

0 Tony Tang 8 months ago in reply to Krunal Bhargav34

TI__Mastermind 29252 points

Hi Krunal,

In order to identify the error caused by SDK or QT:

Can QT5.15.13 work with SDK8.6 with Kernel V5.10.y?

Or Can QT5.14.2 work with SDK10.0 with Kernel V6.6.y?

0 Krunal Bhargav34 8 months ago in reply to Tony Tang

TI__Mastermind 44735 points

Hi Tony,

Based on my initial assessment, Qt should work with any Kernel versions and you need to update what the Yocto recipes fetches:

1. https://git.ti.com/cgit/arago-project/oe-layersetup/tree/configs/processor-sdk-linux/processor-sdk-linux-10_01_08_01.txt#n7
2. https://git.ti.com/cgit/arago-project/oe-layersetup/tree/configs/processor-sdk-linux/processor-sdk-linux-08_06_01_03.txt#n9

Also, someone recently tested the following app on our TI platform:

Used the following qt app, but reverted back to qt5: https://github.com/alpqr/quickmwtest/tree/master

# edit /etc/qt5/eglfs_kms_cfg.json to reflect the correct card (/dev/dri/cardx)
$ ./quickmwtest --platform eglfs

Regards,
Krunal

0 Tony Tang 8 months ago in reply to Krunal Bhargav34

TI__Mastermind 29252 points

Hi Krunal,

#1. Does BU have dual display demo of same content? or suggestion?

#2. In order to identify if the problem in SDK or QT, wants to test SDK10.01.08 with QT5.14 which released in SDK8.6, how to do it?

0 Krunal Bhargav34 8 months ago in reply to Tony Tang

TI__Mastermind 44735 points

Hi Tony,

#1. Unfortunately, we don't test dual display for our SDK. My previous post has an example for dual display and I am wondering if that helps.
#2. Could you please review my previous post? I am wondering if that helps or you need more information.

Regards,
Krunal

0 gao fuyi 7 months ago in reply to Krunal Bhargav34

Prodigy 40 points

The program is functional and displays a static screen, but the demo display different content on each panel, our application need to display same content on two port.

Support needs:

#1. How to modify the demo to support dual display with same content?

#2. Does the DSS support cloning between DPI and OLDI? in this way, DSS read buffer only once to save DDR bandwidth. Is there a register bit to support that?

0 Krunal Bhargav34 7 months ago in reply to gao fuyi

TI__Mastermind 44735 points

Understood, I misread the problem statement. The ask is to use single framebuffer and clone between DPI and OLDI. Also, just to confirm, the above worked for you on an older SDK? You were able to clone DPI and LVDS output?

Regards,
Krunal

0 gao fuyi 7 months ago in reply to Krunal Bhargav34

Prodigy 40 points

The content above was applicable on older SDK 08.06.00.42 I tested with, it is capable of reading one buffer to achieve dual display.

0 Tony Tang 7 months ago in reply to Krunal Bhargav34

TI__Mastermind 29252 points

Hi Krunal,

The detail steps in the first post, expect feed back to help customer going forward.

0 Divyansh Mittal 7 months ago in reply to Tony Tang

TI__Genius 9180 points

Hi,

We are looking into it internally with other teams. Will get back when we get some info.

0 Krunal Bhargav34 7 months ago in reply to Divyansh Mittal

TI__Mastermind 44735 points

Hi Tony,

Could you please try playing with the following property: CONFIG_CMA_SIZE_MBYTES? In SDK 8.06, it was set to 512MB but on SDK 10.x, it is set to 32MB. Please try increasing the size and let us know if that helps with the debug.

Regards,
Krunal

0 gao fuyi 7 months ago in reply to Krunal Bhargav34

Prodigy 40 points

Hi Krunal,
I changed CONFIG_CMA_SIZE_MBYTES from 32 to 512, but I am still encountering the same error.

root@am62xx-evm:/usr/share/qt5/examples/opengl/textures# ./textures -platform eglfs
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
[ 79.586228] PVR_K: 1054: RGX Firmware image 'rgx.fw.33.15.11.3' loaded
[ 79.633247] PVR_K: 1054: Shader binary image 'rgx.sh.33.15.11.3' loaded
Failed to move cursor on screen LVDS1: -14
Failed to move cursor on screen LVDS1: -14
Failed to move cursor on screen HDMI1: -14
Failed to move cursor on screen LVDS1: -14
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003
Could not lock GBM surface front buffer!
QEGLPlatformContext: eglSwapBuffers failed: 3003

+1 Divyansh Mittal 7 months ago in reply to gao fuyi

TI__Genius 9180 points

Hi,

Please try setting the following environment variable and then retry:

QT_QPA_EGLFS_KMS_NO_EVENT_READER_THREAD=1

Thanks

Divyansh

0 gao fuyi 7 months ago in reply to Divyansh Mittal

Prodigy 40 points

Hi,

Sorry for the long wait. It's running smoothly now.Thank you very much!

I have another question.

Does DSS internally support cloning between DPI and OLDI? in this way, DSS read buffer only once to save DDR bandwidth. Is there a register bit to support that?

0 Krunal Bhargav34 7 months ago in reply to gao fuyi

TI__Mastermind 44735 points

Hi,

It should be possible based on the following:

However, in Linux the DRM framework doesn't have any hooks or mechanism to implement the above.

Regards,
Krunal

0 gao fuyi 7 months ago in reply to Krunal Bhargav34

Prodigy 40 points

ok, thank you.

0 gao fuyi 7 months ago in reply to Krunal Bhargav34

Prodigy 40 points

Hi,

We need the feature to support dual display with cloning function, it will save DDR bandwidth to be able to support dual 1080P60fps. and save external device cost. it will be a advantage of AM62x platform, will TI implement it?

0 Krunal Bhargav34 7 months ago in reply to gao fuyi

TI__Mastermind 44735 points

Hi,

We would need to evaluate the above request internally and I don't have any timelines or commitments as of now.

Regards,
Krunal

0 Tony Tang 7 months ago in reply to Krunal Bhargav34

TI__Mastermind 29252 points

For recording and understanding, need the feature to display dual display from one pipeline as below block diagram.

0 Krunal Bhargav34 7 months ago in reply to Tony Tang

TI__Mastermind 44735 points

Thanks for the clarification! Can you try setting the following: 14.8.9.1.259.1 OVR1_0 Register (Offset = 20h) [reset = 0h ] and 14.8.9.1.270.1 OVR2_0 Register (Offset = 20h) [reset = 0h ]

In the above, ensure the same CHANNELIN is programmed (0 for VID and 1 for VIDL). I don't know if the above will work because we have not tested it and let me know the results of your testing.

Regards,
Krunal

Processors

Processors forum

AM625: How to output dual channels with same content on SDK10.0.y using eglfs_kms plugin