• 周五. 9月 30th, 2022

5G编程聚合网

5G时代下一个聚合的编程学习网

热门标签

—rk平台读取i2c总线的速率

admin

11月 28, 2021

‘t have scope to measure clock rate, but you still can give it a try. Tongue 
—————————————————————————————————
please follow up https://tinkerboarding.co.uk/wiki/index….are#Kernel to download kernel of Tinkerboard.
and push my attachment(you can modify frequency as you want) to kernel/arch/arm/boot/dts/overlays/

then, you can start to build kernel. after building, copy kernel/arch/arm/boot/dts/overlays/i2c-clock-freq.dtbo to /boot/overlays/ of tinkerboard.
and modify /boot/hw_intf.conf as below

intf:i2c1=on
intf:i2c4=on
intf:dtoverlay=i2c-clock-freq

after rebooting, check with “xxd /proc/device-tree/[email protected]/clock-frequency”   

P.S. mapping table as below:
[email protected] ->I2C0
[email protected] ->I2C1
[email protected] ->I2C2
[email protected] ->I2C3
[email protected] ->I2C4
[email protected] ->I2C5

发表回复

您的电子邮箱地址不会被公开。