TDA4VM: tiboot3.bin of SDK7.3 bootting failed using emmc-boot mode

Hi,

So https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1028163/faq-tda4vm-on-7-3-8-0-sdk-how-to-reduce-ddr-speed-to-3733-mts

reducing the DDR Speed to 3733 MTS is not helping.

Is the eMMC part on your board different when compared with TDA4VM EVM board?

What are the changes you made on 7.2 SDK w.r.t eMMC?

Best Regards,
Keerthy

1)Is the eMMC part on your board different when compared with TDA4VM EVM board?

=>The eMMC we used is different from the EVM board.

    We had boot the other our custom board successfully using sdk7 3 bootloader on the same eMMC.Even ddr freq has more than 4266MTS!I

2)What are the changes you made on 7.2 SDK w.r.t eMMC?

=> We did not change on 7.2 SDK.

3)Why the SDK V7.2 can be used, but SDK V7.3 can't, and even reducing the DDR frequency to 3200MTS still can't? I doubt whether the  hardware parameters need to match with DDRSS tools on SDK V7.3.

Hi Hao,

Can you share the logs of the commands writing the sysfw.itb, tispl.bin, tiboot3.bin & u-boot.img to eMMC?

Best Regards,
Keerthy

Hi, Keerthy

We have made great discoveries.

When the tiboot3.bin of 7.3 SDK  fails to start, it is found that the PMIC chip TPS65941212 works abnormally through hardware measurement.

tiboot3.bin may operate the pin of tda4 connected to PMIC abnormally, resulting the OVPGDVR of PMIC is low level.So affecting the power 3V3 of EMMC chip. Therefore, tiboot3.bin cannot continue getting tispl.bin and other firmware from EMMC .

Hardware troubleshooting may be that the pin level of ii2c has changed, so I want to know 7.3 sdk bootloader updating from 7.2, especially tiboot3.bin, made any changes to these pins of ii2c connected between tda4 and PMIC?

Hi,

Can you replace the main_sdhci0 node in arch/arm/dts/k3-j721e-main.dtsi in 7.3 SDK with the working 7.2 SDK main_sdhci0 node?

I just want to isolate if changes in eMMC speed modes are not causing any issues?

- Keerthy

Hi,

According to your suggestion, we did the further investigation, it was found that  if frequency mmc-hs400-1_ 8V is deleted at 7.3 SDK , it cannot be started.

After replacing the main_sdhci0 node in arch/arm/dts/k3-j721e-main.dtsi in 7.3 SDK with the working 7.2 SDK main_sdhci0 node,TDA4 can boot successfully!

However, sometimes it fails to start and an error is reported.,mmc fail to send stop cmd

SandalHao said:

However, sometimes it fails to start and an error is reported.,mmc fail to send stop cmd

You  never observed this issue on 7.2? eMMC device tree changes seem to be causing the issue on your board on 7.3 SDK.

- Keerthy

Yes,the issue had never been observed on 7.2.

Can the DDR frequency be increased to 933 or 1066.5 on 7.2?

Hi,

Yes. Please try this: https://e2e.ti.com/support/processors/f/791/t/1016097

Best Regards,
Keerthy

Hi,

According to your suggestion, the following error occurred when code chaged on 7.2.

U-Boot SPL 2020.01-dirty (Jan 17 2022 - 14:55:13 +0800) SDK-V7.2
SYSFW ABI: 3.1 (firmware rev 0x0014 '20.8.5--v2020.08b (Terrific Lla')
Trying to boot from MMC1
fdt_record_loadable: FDT_ERR_BADMAGIC
ti_sci get failed: -22
rproc failed to be initialized (-256)

resetting ...
ti_sci_get_response: Message receive failed. ret = -110
Mbox send fail -110
ti_sci_sysreset_request: reboot_device failed (-110)
ti_sci_get_response: Message receive failed. ret = -110
Mbox send fail -110
ti_sci_sysreset_request: reboot_device failed (-110)

Then my tda4 board gets stuck and cannot be started.

Hi Hao,

This clearly shows that DDR frequency increase is causing the issue. However I am not sure why reducing the frequency back to 3733 in 7.3 SDK
is not helping your case. Can you try that once more just to double check?

- Keerthy