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Question, i.MX6Q LinuxBSP(I2C clock setting, ODT setting)

Question asked by AVNET JAPAN FAE (team share account) on Feb 3, 2014
Latest reply on May 13, 2014 by Sean Chen

Dear All,


My customer has two questions on Freescale LinuxBSP.

(1) I2C Clock setting (set in /linux/drivers/i2c/busses/i2c-imx.c)

The customer got the following information from his developing partner.

In the latest LinuxBSP, the variable value of i2c_clk_rate(used in i2c-imx.c) is revised and it is 22MHz.

In previous version of LinuxBSP, I2C SCL clock rate cannot be set to 400KHz because i2c_clk_rate value is 6MHz.

Is it true?

(2)ODT setting

In Freescale LinuxBSP, ODT field of IOMUXC_SW_PAD_CTL_GRP_RGMII_TERM is configured as default value(000 : Disabled).

Could you tell me whether the ODT setting in LinuxBSP is reasonable?