Hi, I have a new display where the clock is needed inverted.
I tried it in u-boot by setting the paramter pixelclockpol to 0, without success.
(videargs = video=mxsfb:800x480M-16@60,pixelclockpol=0)
Also I tried in the device tree definition by changing the timing setting (pixelclk-active), but no change.
Is there any other way to change this or am I doing something wrong?
Best regrads, Martin
Colibri imx6ull 256MB V1.1A
Boot2Qt Qt5.13 Linux4.9.144 BSP2.8.5
Hello @mhug ,
According to our documentation
the argument to be changed is pixclockpol, not pixelclockpol
Can you try with the correct argument ad let us know the outcome?
Best regards,
Josep
I tried the correct argument, I just wrote it wrong in the question!
Hi @mhug ,
I see that you’re using boot2qt. For this usually you would have to contact the Qt support.
Anyway, in the meantime. Do you get any log message back when booting that might shine some light onto this issue?
Best Regards
Kevin
Hi Kevin
The log message from uboot
arch=arm
baudrate=115200
board=colibri-imx6ull
board_name=colibri-imx6ull
boot_a_script=load ${devtype} ${devnum}:${distro_bootpart} ${scriptaddr} ${prefix}${script}; source ${scriptaddr}
boot_extlinux=sysboot ${devtype} ${devnum}:${distro_bootpart} any ${scriptaddr} ${prefix}extlinux/extlinux.conf
boot_net_usb_start=usb start
boot_prefixes=/ /boot/
boot_script_dhcp=boot.scr.uimg
boot_scripts=boot.scr.uimg boot.scr
boot_targets=mmc0 usb0 dhcp
bootargs=ubi.mtd=ubi root=ubi0:rootfs rw,noatime rootfstype=ubifs ubi.fm_autoconvert=1 console=ttymxc0,115200n8 consoleblank=0verify=0
bootcmd=ubi part ubi &&ubi read ${kernel_addr_r} kernel && ubi read ${fdt_addr_r} dtb && bootz ${kernel_addr_r} - ${fdt_addr_r}
bootcmd_dhcp=if dhcp ${scriptaddr} ${boot_script_dhcp}; then source ${scriptaddr}; fi;
bootcmd_mmc0=setenv devnum 0; run mmc_boot
bootcmd_usb0=setenv devnum 0; run usb_boot
bootdelay=0
bootm_size=0x10000000
console=ttymxc0
cpu=armv7
defargs=user_debug=30
dfu_alt_info=imx6ull-bcb part 0,1;u-boot1 part 0,2;u-boot2 part 0,3;u-boot-env part 0,4;ubi partubi 0,5
distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done
eth1addr=00:14:2d:71:7a:f0
ethact=FEC0
ethaddr=00:14:2d:61:7a:f0
ethprime=FEC
fdt_addr_r=0x82100000
fdt_board=eval-v3
fdt_fixup=;
fdtcontroladdr=8deffd78
initrd_high=0xffffffff
ip_dyn=yes
ipaddr=192.168.10.2
kernel_addr_r=0x81000000
kernel_file=zImage
loadaddr=0x82000000
mmc_boot=if mmc dev ${devnum}; then setenv devtype mmc; run scan_dev_for_boot_part; fi
mtdparts=mtdparts=gpmi-nand:512k(mx6ull-bcb),1536k(u-boot1)ro,1536k(u-boot2)ro,512k(u-boot-env),-(ubi)
netmask=255.255.255.0
nfsargs=ip=:::::eth0: root=/dev/nfs
nfsboot=run setup; setenv bootargs ${defargs} ${nfsargs} ${setupargs} ${vidargs}; echo Booting from NFS…;dhcp ${kernel_addr_r} && tftp ${fdt_addr_r} imx6ull-colibri${variant}-${fdt_board}.dtb && run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}
pxefile_addr_r=0x87100000
ramdisk_addr_r=0x82200000
scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${distro_bootpart}…; for prefix in ${boot_prefixes}; do run scan_dev_for_extlinux; run scan_dev_for_scripts; done;
scan_dev_for_boot_part=part list ${devtype} ${devnum} -bootable devplist; env exists devplist || setenv devplist 1; for distro_bootpart in ${devplist}; do if fstype ${devtype} ${devnum}:${distro_bootpart} bootfstype; then run scan_dev_for_boot; fi; done
scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}extlinux/extlinux.conf; then echo Found ${prefix}extlinux/extlinux.conf; run boot_extlinux; echo SCRIPT FAILED: continuing…; fi
scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${script}; then echo Found U-Boot script ${prefix}${script}; run boot_a_script; echo SCRIPT FAILED: continuing…; fi; done
scriptaddr=0x87000000
sdargs=root=/dev/mmcblk0p2 ro rootwait
sdboot=run setup; setenv bootargs ${defargs} ${sdargs} ${setupargs} ${vidargs}; echo Booting from MMC/SD card…; load mmc 0:1 ${kernel_addr_r} ${kernel_file} && load mmc 0:1 ${fdt_addr_r} imx6ull-colibri${variant}-${fdt_board}.dtb && run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}
serial#=06388464
serverip=192.168.10.1
setethupdate=if env exists ethaddr; then; else setenv ethaddr 00:14:2d:00:00:00; fi; tftpboot ${loadaddr} ${board}/flash_eth.img && source ${loadaddr}
setsdupdate=mmc rescan && setenv interface mmc && fatload ${interface} 0:1 ${loadaddr} ${board}/flash_blk.img && source ${loadaddr}
setup=setenv setupargs console=tty1 console=${console},${baudrate}n8 ${memargs} consoleblank=0
setupargs=console=tty1 console=${console},${baudrate}n8 ${memargs} consoleblank=0
setupdate=run setsdupdate || run setusbupdate || run setethupdate
setusbupdate=usb start && setenv interface usb && fatload ${interface} 0:1 ${loadaddr} ${board}/flash_blk.img && source ${loadaddr}
soc=mx6
splashpos=m,m
ubiargs=ubi.mtd=ubi root=ubi0:rootfs rw rootfstype=ubifs ubi.fm_autoconvert=1
ubiboot=run setup; setenv bootargs ${defargs} ${ubiargs} ${setupargs} ${vidargs}; echo Booting from NAND…; ubi part ubi &&ubi read ${kernel_addr_r} kernel && ubi read ${fdt_addr_r} dtb && run fdt_fixup && bootz ${kernel_addr_r} - ${fdt_addr_r}
updlevel=2
usb_boot=usb start; if usb dev ${devnum}; then setenv devtype usb; run scan_dev_for_boot_part; fi
vendor=toradex
ver=U-Boot 2016.11-2.8.5+g02735f4 (Mar 03 2023 - 10:00:21 +0000)
verify=0
vidargs=video=mxsfb:800x480M-16@60,pixclockpol=0,outputen=1
videomode=video=ctfb:x:800,y:480,depth:18,pclk:40000,le:8,ri:8,up:8,lo:8,hs:0,vs:0,sync:0,vmode:0
The LCD driver log message of the kernel
root@b2qt-colibri-imx6ull:~# dmesg | grep fb
[ 0.369048] mxsfb 21c8000.lcdif: initialized
LCD device tree settings
&lcdif {
display = <&display0>;
status = “okay”;
display0: lcd-display {
bits-per-pixel = <16>;
bus-width = <18>;
display-timings {
native-mode = <&timing_wvga>;
/* WVGA Timing, */
timing_wvga: 800x480 {
clock-frequency = <33300000>;
hactive = <800>;
vactive = <480>;
hback-porch = <8>;
hfront-porch = <8>;
vback-porch = <8>;
vfront-porch = <8>;
hsync-len = <0>;
vsync-len = <0>;
de-active = <1>;
hsync-active = <0>;
vsync-active = <0>;
pixelclk-active = <1>;
};
};
};
};
Best Regards
Martin
Hello @mhug ,
I don’t see any obvious error in the parameters.
Were you able to contact Qt support directly?
Best regards,
Josep
Hello Josep
Ok, I will try Qt support. Thanks for the effort.
Best regards, Martin
