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Can TCMU be used as buffer descriptor(BD) of ENET for CM4 core of i.MX6 SoloX?

Question asked by Guohu Xu on Feb 19, 2016
Latest reply on Feb 25, 2016 by Yuri Muhin

Hi Experts,


I'm find an uncahed area to be used as the BD of ENET for Cortex-M4 of i.MX6 SoloX.

And the TCM_U(Upper Tightly Coupled Memory) may be satisfied.

But When I use it as BD of ENET(setting addresses value with TCM_U area to ENETx_RDSR/ENETx_TDSR registers, the ENET doesn't work.

If I use the DDR address space as BD, the ENET works fine.

Except for the BD settings, all other settings and configuration process are same for these 2 situation.

I'd like to know is the TCM_U capable of being used as BD area of ENET?

If yes, is there any configuration to be done for it?




Best Regards,