Changing the MDC speed in P2041

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Changing the MDC speed in P2041

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sameerarvikar
Contributor III

I probed mdc ,and got to know that

when uboot is running mdc speed is 4.7 MHz

where as linux boots up speed reduces to 1.8 MHz

How to increase the MDC speed

cannot find any register to change the mdc clock frequency  in P2041 RM

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r8070z
NXP TechSupport
NXP TechSupport


Have a great day,

You can find the MDIO registers in QorIQ Data Path Acceleration Architecture (DPAA) Reference Manual. You can download it from the nxp site page

https://www.nxp.com/products/processors-and-microcontrollers/power-architecture-processors/qoriq-pla...

Please see MDIO Configuration and Status Register (MDIO_CFG_STAT). MDIO_CFG_STAT[MDIO_CLK_DIV] configures the MDIO clock frequency.

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