topic Re: iMX8QM A0 CPU Soft Reset Issue in i.MX Processors

iMX8QM A0 CPU Soft Reset Issue

prashanthkumar — Fri, 24 May 2019 08:21:11 GMT

Hi,

We are working on iMX8QM custom board with 4.14.98 Kernel BSP release with 'imx-scfw-porting-kit-1.2' SCFW.
The iMX8QM B0 CPU is able to do soft reset (reset command in u-boot & reboot command in kernel) , but the same soft reset is hanging for A0 CPU.

But in iMX8QM A0 CPU able to do soft reset If we use 4.14.78 BSP with 'imx-scfw-porting-kit-1.1.2' SCFW source code.

Is there any CPU restriction/bug for iMX8QM A0 CPU soft reset in imx-scfw-porting-kit-1.2 SCFW or 4.14.98 Kernel BSP release? How to resolve this soft reset issue for A0 CPU?

Best Regards,

Prashanth Kumar K

Re: iMX8QM A0 CPU Soft Reset Issue

igorpadykov — Tue, 28 May 2019 00:13:18 GMT

Hi Prashanth

L4.14.98 scfw changes are described in Chapter 2

Change List System Controller Firmware Release Notes included in

SCFW Porting Kit

In general old revision A0 CPU is not supported in new BSPs.

Best regards
igor
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