TDA4VM: Question about config clock resource on early SPL

xu ji

Part Number: TDA4VM

Tool/software:

Hello，TI

Now I research the code about SPL, found the arch\arm\mach-k3\j721e\clk-data.c can config the board clock resource.

And about program this file have some user guide to add other resources if user want to use resource early before sysfw sci load?

and for example:

CLK_MUX("mcu_clkout_mux_out0", mcu_clkout_mux_out0_parents, 2, 0x40f08010, 0, 1, 0),

how to explain this code? the param about resource name \ parents group \ the address how to get it and set?

Thanks

1 month ago

0 Keerthy J 1 month ago

TI__Guru*** 149250 points

Hi Xu,

There is no programming guide currently. That said what are the modules/clocks that you are trying to turn on?
I can check with the internal team on this.

- Keerthy

0 xu ji 1 month ago in reply to Keerthy J

Intellectual 335 points

Hi，

I want to turn on the ID 274 device mcuspi0 that used clock resource

thanks

0 Keerthy J 1 month ago in reply to xu ji

TI__Guru*** 149250 points

Hi Xu,

Sciclient_pmSetModuleState()

Can you try that from U-Boot instead of R5 SPL is that okay? We do not have the dev-data clk-data for the MCU_MCSPI0 & hence the request.

- Keerthy

0 xu ji 1 month ago in reply to Keerthy J

Intellectual 335 points

hi，

does the Sciclient_pmSetModuleState() can used at SPL stage that sysfw has not load?

I want control some SPI device at SPL stage at early in 200ms when from power on.

Any method can got the goal?

0 xu ji 1 month ago in reply to Keerthy J

Intellectual 335 points

the Sciclient_pmSetModuleState() used at mcu RTOS side right？we need coding at SPL uboot side, in SPL the mcu1_0 load too late

0 Keerthy J 1 month ago in reply to xu ji

TI__Guru*** 149250 points

Hi Xu,

Yes that's after R5 SPL. I will look into the dev_data clk_data for the relevant module. I will get back early next week. We do not have a ready example as of now.

Best regards,

Keerthy