[Beko]

Hi Neeraj,

I just wanted to follow-up on this topic. We did make a new board with VIN_BAT and PMIC_BAT_SENSE to GND via 1K resistor as the TI Application Note suggested and you said you don’t expect issues but NOPE. It did not work, we had no signs of operation from the OSD335x C-SiP. As soon as we have removed the 1K resistor and kept the ends floating and VOILA, it started working. I guess we should have followed your recommendations instead of TIs. 🙂

Just writing this for the record and maybe you may want to further investigate this.

Regards,

Beko

[Beko]

Hi Neeraj,

I do find it weird that we disabling the RTC subsystem causes issues. This should probably be noted in your tutorials, because at the moment they clearly show a method to disable it. We will go ahead and do as you as and enable it to avoid any potential problems. Thank you for your response.

[Beko]

Thank you Neeraj.

[Beko]

Hi Octavo Team,

Thanks for the good-work so far. The OSD32MP15x has been a great addition to your product portfolio. Most embedded developers need a SIP that can run Linux but can also do some “real-time” stuff. However, we do not really need the dual-core STM, a low-cost single core version would suffice most not-so-high-end applications. Thus a single core variation of the OSD32MP15x with STM32MP151C, eMMC (1 or 2GB would suffice most) and oscillator could be your best-seller with the right price tag.

[Beko]

Hi Neeraj,

Thank you for your response. I just wanted to clarify your suggestion #3. When you say keep the RTC subsystem of OSD335x ON, do you mean to enable RTC by doing the connections shown in Figure 7.2 and Figure 7.4 of the OSD335x C-SiP Family Datasheet (Rev3)? Eventhough we will be using the external RTC, you suggest we enable the internal RTC module, correct? If yes, will we also need to include a crystal at OSC1 or leave them floating? Any other things we need to do to not face RTC related bootup issues? Thanks.

Regards,

Beko

[Beko]

Hi Neeraj,

Following up with the USB boot issue for a custom designed board using OSD335x. For initial bootup of a new custom board with USB connectors configred as hosts (ID pulled down), is it possible to use a regular flash drive to boot while pressing the button? (No SD card inserted and empty emmc, technically so it should be looking at USB for an image). If it is possible is there anything we should be doing different than booting from SD card?

Thanks.

Beko

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