How to reset I2C bus on i.MX8QM

[xu_ji1]

Hello,

I want to add reset I2C bus logic on I2C driver,how to do this and does I2C bus support it?

[igorpadykov]

Hi xu_ji1

as all accesses in i.MX8QM are performed through SCFW APIs, one can look at function

sc_err_t sc_pm_resource_reset (sc_ipc_t ipc, sc_rsrc_t resource)
This function is used to reset a peripheral.

described in sect.Reset Functions sc_fw_api.pdf document included in

SCFW Porting Kit​

Best regards
igor

[xu_ji1]

Hi，

I want to reset I2C bus in kernel,  I need reset it after booting, when I2C bus init done before device register on bus,is it support?