Linux/TDA2EVM5777: Why I can not find the pins about the cpsw in the dra7-evm.dts like the definition of pins in the am335x-evm.dts.

Lucas Gou

Intellectual 390 points

Part Number: TDA2EVM5777

Tool/software: Linux

The definition of pins about cpsw in the am335x-evm.dts:

But I can't find the definition of pins about cpsw in the dra7x-evm.dts

over 7 years ago

0 Prasad Jondhale over 7 years ago

TI__Mastermind 27743 points

Lucas,

Not sure if you are looking for this but you can find CPSW default in uboot @\ti_components\os_tools\linux\u-boot\u-boot\arch\arm\dts\dra7-evm.dts
Also pad mux modes can be found at ti_components\os_tools\linux\u-boot\u-boot\board\ti\dra7xx\mux_data.h
For CPSW check for RGMII0/1 pins.

0 Lucas Gou over 7 years ago in reply to Prasad Jondhale

Intellectual 390 points

Hi,
I want to find the right dts about cpsw pins in the kernel, but not in the u-boot! How does the kernel use the pins about cpsw?
Regards,
Lucas.

0 Lucas Gou over 7 years ago in reply to Lucas Gou

Intellectual 390 points

Hi，

Thanks. When will the expert contact with me?

0 Nikhil Devshatwar over 7 years ago in reply to Lucas Gou

TI__Genius 9905 points

Hi Lucas,
It is recommended that all the pinmux and iodelay configuration should be done in first stage bootloader while in isolation.
Therefore, we only configure pinmux in u-boot first stage.

You can get the pinmux data at git.ti.com/.../mux_data.h
Kernel does not configure pinmux, It relies on u-boot to setup the pinmux for all the pads that will be needed by drivers running in the kernel.

The only exception for handling pinmux in kernel is MMC. Everything else is done by u-boot.

Regards,
Nikhil D

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Linux/TDA2EVM5777: Why I can not find the pins about the cpsw in the dra7-evm.dts like the definition of pins in the am335x-evm.dts.