cjctan

Hi lukaszjokiel, You are not alone... I'm also having similar high temp issue on the Zero whereas my PC+ doesn't have. / _ \ _ __ __ _ _ __ __ _ ___ | _ \(_) |__ /___ _ __ ___ | | | | '__/ _` | '_ \ / _` |/ _ \ | |_) | | / // _ \ '__/ _ \ | |_| | | | (_| | | | | (_| | __/ | __/| | / /| __/ | | (_) | \___/|_| \__,_|_| |_|\__, |\___| |_| |_| /____\___|_| \___/ |___/ Welcome to ARMBIAN Debian GNU/Linux 8 (jessie) 3.4.113-sun8i System load: 0.44 Up time: 24 sec Memory usage: 12 % of 494Mb IP: 192.168.1.65 CPU temp: 53°C Usage of /: 19% of 7.1G

Thanks again,Matinayotte I change the value in i2c-sunxi.h as I'm using legacy kernel

No problem. I spent some time reading on the FEX (http://linux-sunxi.org/Fex_Guide) but couldn't find any related info. As for Device Tree, I'm totally clueless, needs to dig more info....

Hi Martinayotte, Thanks for your reply. I tried "100000", "200000" and "400000" for speed which gives the same return value of -1. Any idea why? BTW, may i know why "SPI_IOC_WR_MAX_SPEED_HZ" is used for i2c instead of SPI ?

Hi All, I would appreciate if someone can guide me on how to change the I2C speed? I'm using a OPI PC+ and the default speed is 400Khz when using the "IOCTL" method and would like to change to the standard 100Khz speed. Thank you