AM5728: IPU booted from MLO issue

Pavel Azizov42

Intellectual 300 points

Part Number: AM5728

Hello.

We use AM572x_IDK board.

We are booting an application for IPU via MLO.

The application initializes and uses SPI_2, I2C_0 and PRUSS.

We also have SPL as an application for A15 core in the multi-core application.

The A15 core is loaded with SPL -> u-boot -> Linux.

If we use at least one of the the above-mentioned peripherals from IPU before Linux has completely started, Linux boot process hangs on mounting rootfs.

Seems that SD-card is not found by its driver.

We have checked .dts-files used in our build and either see no such peripherals or have deleted their definition out of the files.

What might be the issue?

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

The software team have been notified. They will respond here.

0 Rex Chang over 8 years ago in reply to Biser Gatchev-XID

TI__Guru 50170 points

Pavel,

what if the peripheral is used after Linux is up, is any issue in this scenario? What do the peripherals doing when they are used?

Rex

0 Pavel Azizov42 over 8 years ago in reply to Rex Chang

Intellectual 300 points

Rex,
if the peripheral is used after Linux is up we see no problems.
For SPI we use sources of SPI test from TI RTOS SDK (from generated project MCSPI_BasicExample_idkAM572x_armTestProject)

0 Rex Chang over 8 years ago in reply to Pavel Azizov42

TI__Guru 50170 points

Hi, Pavel,

I don't believe any of the RTOS examples in AM572 Proc SDK anticipated Early Boot and Late Attach. I am not sure if these examples need to be modified for that. This thread seems to me is the same as the other thread, e2e.ti.com/.../620195 which is related to Early Boot and Late Attach on AM572 platform. The DSP application should be scheduled at a later time to run after Linux is up running. In Early Boot and Late Attach, it is better for those tasks you wish to run before Linux is up.

Since this thread is same as the other one, I'll close this one and move to the other thread if you have no objection.

Rex

0 Pavel Azizov42 over 8 years ago in reply to Rex Chang

Intellectual 300 points

Hi, Rex
ok, we may move to the other thread

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AM5728: IPU booted from MLO issue