Newly connected device not showing in i2c tree

Technical Support
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1

i have connected CY809560 i2c expanded to i2c-0 controller , already i have 3 devices including one rtc connected to this but when i try to detect the device only my old devices are showing

root@colibri-vf:~# i2cdetect -y -r 0
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: 20 21 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- 51 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

This new i2c ex pander is works only under 100khz clock
Any procedure to follow after hardware interface to detect the device ?

2

Hi

What exact HW and SW and the version thereof are you using?

In the tags you added Colibri iMX6 and PXA230. In the Environment: Colibri iMX6 and in the command line output colibri-vf.

Could you add a link to the data sheet of your I2C device?

Max