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AM5728: How import sysconfig device tree into linux device tree

Ilya Fedusiv

Prodigy 40 points

Part Number: AM5728
Other Parts Discussed in Thread: SYSCONFIG

I used sysconfig web tool. And want to insert settings I made there to linux device tree.
Found, sysconfig can configure devicetree.txt, but where to put these configuration. Device tree blob generates from many files.

over 2 years ago

0 Keerthy J over 2 years ago

TI__Guru**** 155350 points

Hi,

All the pinmux for AM57xx needs to be done in the mux_data.h in the U-Boot folder. Kernel doesn't touch the pinmux even if we do the device tree pinmux configurations.

Best Regards,

Keerthy

0 Tony Tang over 2 years ago in reply to Keerthy J

TI__Mastermind 28092 points

Keerthy,

How to generate the mux_data.h file for custom board?

It used to be able to configure in dts file with old pinmux tool, why changed?

0 Keerthy J over 2 years ago in reply to Tony Tang

TI__Guru**** 155350 points

Tony,

With old pinmux tool were you getting the mux_data.h file?

- Keerthy

0 Tony Tang over 2 years ago in reply to Keerthy J

TI__Mastermind 28092 points

Keerthy,

Customer said there is a old version can generate the .dts file with pad configuration. but can't find the installation file now.

I installed several pinmux V4 version, did not find which version can generate the .dts file.

From this post, need a perf tool to convert pinmux file for mux_data.h, What is the tool and is there a guide?

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1207561/am5728-usage-of-pinmux-output-seems-to-be-dual---unclear

0 Tony Tang over 2 years ago in reply to Tony Tang

TI__Mastermind 28092 points

I found it in https://www.ti.com/lit/an/sprac44a/sprac44a.pdf

0 Keerthy J over 2 years ago in reply to Tony Tang

TI__Guru**** 155350 points

Thanks Tony for finding that! Due to IOdelay we need to program all the pin mux in the beginning at the boot loader phase.

- Keerthy