# cat /boot/uEnv.txt #Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0
uname_r=4.4.127-bone22 #uuid= #dtb= ##BeagleBone Black/Green dtb's for v4.1.x (BeagleBone White just works..) ##BeagleBone Black: HDMI (Audio/Video) disabled: #dtb=am335x-boneblack-emmc-overlay.dtb ##BeagleBone Black: eMMC disabled: #dtb=am335x-boneblack-hdmi-overlay.dtb ##BeagleBone Black: HDMI Audio/eMMC disabled: #dtb=am335x-boneblack-nhdmi-overlay.dtb ##BeagleBone Black: HDMI (Audio/Video)/eMMC disabled: #dtb=am335x-boneblack-overlay.dtb ##BeagleBone Black: wl1835 #dtb=am335x-boneblack-wl1835mod.dtb ##BeagleBone Green: eMMC disabled #dtb=am335x-bonegreen-overlay.dtb ###U-Boot Overlays### ###Documentation: http://elinux.org/Beagleboard:BeagleBone_Debian_Image_Migration#U-Boot_Overlays ###Master Enable enable_uboot_overlays=1 ###Overide capes with eeprom uboot_overlay_addr0=/lib/firmware/BB-I2C2-ADXL-00A0.dtbo #uboot_overlay_addr1=/lib/firmware/<file1>.dtbo #uboot_overlay_addr2=/lib/firmware/<file2>.dtbo #uboot_overlay_addr3=/lib/firmware/<file3>.dtbo ###Custom Cape #dtb_overlay=/lib/firmware/<file4>.dtbo ###Disable auto loading of virtual capes (emmc/video/wireless) #disable_uboot_overlay_emmc=1 #disable_uboot_overlay_video=1 #disable_uboot_overlay_audio=1 #disable_uboot_overlay_wireless=1 ###Cape Universal Enable #enable_uboot_cape_universal=1 ###U-Boot fdt tweaks... #uboot_fdt_buffer=0x60000 ###U-Boot Overlays### cmdline=coherent_pool=1M net.ifnames=0 quiet cape_universal=enable #In the event of edid real failures, uncomment this next line: #cmdline=coherent_pool=1M net.ifnames=0 quiet cape_universal=enable video=HDMI-A-1:1024x768@60e ##Example v3.8.x #cape_disable=capemgr.disable_partno= #cape_enable=capemgr.enable_partno= Used below uEnv.txt instead and overlay is added while booting ##Example v4.1.x #cape_disable=bone_capemgr.disable_partno= #cape_enable=bone_capemgr.enable_partno= ##enable Generic eMMC Flasher: ##make sure, these tools are installed: dosfstools rsync #cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh On Monday, May 14, 2018 at 2:36:55 AM UTC+5:30, Mrigendra Chaubey wrote: > > *root@arm:~# /opt/scripts/tools/version.sh* > git:/opt/scripts/:[ef2c5982e3788e07d9ec4a3d23089dc5e5a3f9cd] > eeprom:[A335BNLT00C05315BBBK054D] > model:[TI_AM335x_BeagleBone_Black] > bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2018.03-dirty] > bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2015.01-00001-gb2412df] > kernel:[4.4.127-bone22] > device-tree-override:[loadxfdt=load mmc 0:1 ${fdtaddr} > /boot/dtbs/${uname_r}/${fdtfile}] > uboot_overlay_options:[enable_uboot_overlays=1] > uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/BB-I2C2-ADXL-00A0.dtbo > > ] > pkg:[bb-cape-overlays]:[4.4.20171207.0-0rcnee1~stretch+20171207] > > *OVERLAY FILE* > https://pastebin.com/CsicZ046 > > compiled overlay as > dtc -I dts -O dtb -o BB-I2C2-ADXL-00A0.dtbo -b 0 -@ BB-I2C2-ADXL-00A0.dts > > *kconfig file changes* > https://pastebin.com/e4hqXgmJ > > *DRIVER FILE* > adxl34x-i2c.c > https://pastebin.com/ef8Uh06D > > adxl34x.c > https://pastebin.com/agcF9muC > > *uEnv.txt* > > ##This will work with: Angstrom's 2013.06.20 u-boot. > > loadaddr=0x82000000 > fdtaddr=0x88000000 > rdaddr=0x88080000 > > initrd_high=0xffffffff > fdt_high=0xffffffff > > #for single partitions: > mmcroot=/dev/mmcblk0p1 > > loadximage=load mmc 0:1 ${loadaddr} /boot/vmlinuz-${uname_r} > loadxfdt=load mmc 0:1 ${fdtaddr} /boot/dtbs/${uname_r}/${fdtfile} > loadxrd=load mmc 0:1 ${rdaddr} /boot/initrd.img-${uname_r}; setenv rdsize > ${filesize} > loaduEnvtxt=load mmc 0:1 ${loadaddr} /boot/uEnv.txt ; env import -t > ${loadaddr} ${filesize}; > loadall=run loaduEnvtxt; run loadximage; run loadxfdt; > enable_uboot_overlays=1 > uboot_overlay_addr0=/lib/firmware/BB-I2C2-ADXL-00A0.dtbo > mmcargs=setenv bootargs console=tty0 console=${console} ${optargs} > ${cape_disable} ${cape_enable} root=${mmcroot} rootfstype=${mmcrootfstype} > ${cmdline} > > uenvcmd=run loadall; run mmcargs; bootz ${loadaddr} - ${fdtaddr} > > *KERNEL LOGS* > https://pastebin.com/VtWbGNsm > > I had this impression that cat slots will not work, because it was removed > from kernel, but if my dtbo is working but its working ny compatible string > match via *of_ *mechanism. > My objective was to strip down the i2c driver to bare minimum and make it > load at boot time using device tree overlay. > I do not see my driver loaded after doing lsmod. Nor the probe print I > have put in adxl34x.c probe. > > Where am I wrong here? What did I miss. > I am only following this > http://eewiki.net/display/linuxonarm/BeagleBone+Black > > > > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/cab2f719-d2f1-481f-b3ea-41b4c4e0d990%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
