RGMII with DP83867 in T1022 board

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RGMII with DP83867 in T1022 board

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hemwant
Contributor IV

We are having a custom board based on T1022 processor having two PHY (DP83867) attached to the processor via RGMII interface. The problem is none of the PHYs are getting detected at uboot using MDC/MDIO interface. We have checked the MDC using scope and it is OK, however there is no transition detected on MDIO line on trying to read through u-boot prompt. I am attaching the uboot log which includes RCW settings of the board.

Any other relevant information needed to debug the issue will be shared. Kindly let us know.

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hemwant
Contributor IV

ufedor‌ Yeah there was some mistake in RCW and phy were available in uboot by changing the RCW settings. Thanks for the reply.

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anshulkhare
Contributor III

Hello hemwant@cdot.in

in your Board in LInux kernel RGMII with DP83867 worked??

i am using SDK-V2.0-1701 which has linux kernel 4.1 where i am not getting TI Driver for DP83867

how did you configured RGMII in Linux kernel??

kindly help us to solve this issue.

https://community.nxp.com/thread/498996 

Regards,

Anshul Khare

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ufedor
NXP TechSupport
NXP TechSupport

1) RCW[EMI1_MODE]=1 - is pull-up for MDIO signal implemented?

2) What is the SCFG_EMIIOCR[MDIO2SEL] value?