Hi, There is so much outdated information out there…
I want to change the I2C from 100Khz to 400 Khz and there are (see bottom) many files in
beaglebone:/boot/dtbs/4.9.78-ti-r94/ folder. Which dtb (dts) I do change.
I tried am335x-boneblack-wireless.dts with no success.
Thank you. My system is:
Kernel cmd line:
console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet omap_wdt.nowayout=0
Kernel version:
root@beaglebone:/boot/dtbs/4.9.78-ti-r94$ uname -a
Linux beaglebone 4.9.78-ti-r94 #1 SMP PREEMPT Fri Jan 26 21:26:24 UTC 2018 armv7l GNU/Linux
Version:
git:/opt/scripts/:[ea6ea9fca05f36f5044398884375b0231348d6e2]
eeprom:[A335BNLTGW1ABBGW16054396]
model:[TI_AM335x_BeagleBone_Green_Wireless]
dogtag:[BeagleBoard.org Debian Image 2018-01-28]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2018.01-00002-g9aa111a004]
kernel:[4.9.78-ti-r94]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[disable_uboot_overlay_emmc=1]
uboot_overlay_options:[disable_uboot_overlay_video=1]
uboot_overlay_options:[disable_uboot_overlay_audio=1]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg:[bb-cape-overlays]:[4.4.20180126.0-0rcnee0~stretch+20180126]
pkg:[bb-wl18xx-firmware]:[1.20170829-0rcnee2~stretch+20180104]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee0~stretch+20170830]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal i2c bluetooth netdev cloud9ide gpio pwm eqep admin spi tisdk weston-launch xenomai]
dmesg | grep pinctrl-single
[ 1.489799] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
END
root@beaglebone:~$ cat /boot/uEnv.txt
#Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0
uname_r=4.9.78-ti-r94
#uuid=
#dtb=
###U-Boot Overlays###
###Documentation: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays
###Master Enable
enable_uboot_overlays=1