How to reset HIFI DSP core of RT685?

JerryQian_132 — Mon, 27 Mar 2023 08:09:08 GMT

Hi,

There are found APIs in fsl_dsp.h. They are

I have tried DSP_Stop() and DSP_Start(). The results seem pause and resume the HIFI DSP core. I haven't found the reset.

If switch to DSP_Deinit() and DSP_Init(), have to re-copy the DSP image to the memory regions which are assigned to DSP code.

Is there any method to reset HIFI DSP core of RT685 without re-copying the DSP image?

Re: How to reset HIFI DSP core of RT685?

jingpan — Wed, 29 Mar 2023 08:56:35 GMT

You can refer to section 4.5.3.2 in user manual. There is a reset contol0 register which can reset DSP.

Regards,

jing