Is the ORIN 64GB module rtc0 is powered by PMIC_BBATT pin D37? Also what is the rtc1 is powered by? Can the rtc1 powered by other ORIN BATT pin? For holding the system date and time after the ORIN is powered down is it better to use rtc0 instead of rtc1?
Thanks
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Based on the provided context, I’ll do my best to answer your questions.
According to the Software Feature Overview document, the PMIC Configuration section mentions that the BootROM Reset PMIC Configuration includes the PMIC_BBATT pin. However, it does not explicitly state that the rtc0 is powered by this pin. Nevertheless, it is likely that the rtc0 is powered by the PMIC_BBATT pin, as it is a common configuration for real-time clocks (RTCs) to be powered by a battery-backed pin.
Unfortunately, the provided context does not explicitly mention what powers the rtc1. However, it is possible that the rtc1 is powered by a different pin or source, such as the ORIN BATT pin.
The context does not provide information on whether the rtc1 can be powered by other ORIN BATT pins. However, it is likely that the rtc1 can be powered by alternative sources, including other BATT pins, depending on the specific hardware configuration and design.
In general, it is recommended to use the rtc0 for holding the system date and time after power down, as it is likely powered by a battery-backed pin (PMIC_BBATT pin D37). This ensures that the rtc0 remains powered even when the system is shut down, allowing it to maintain the correct date and time.
In contrast, the rtc1’s power source is unclear, and it may not be powered by a battery-backed pin. If the rtc1 is not powered by a reliable source, it may not be able to maintain the correct date and time after power down.
In summary, while the context does not provide explicit answers to all questions, it is likely that the rtc0 is powered by the PMIC_BBATT pin D37 and is a better choice for holding the system date and time after power down. However, further investigation and consultation of the ORIN module’s documentation and hardware design may be necessary to confirm these assumptions.
Please refer to Jetson AGX Orin Series Modules Design Guide
Where do you find reference to RTC0 and RTC1?
it is from this topic
Hi,
“rtc0” and “rtc1” are just a node name in the system. By default, rtc0 is registered from VRS (Voltage Regulator Specification) Power Sequencer and rtc1 is tegra RTC which is not in use.
The PMIC_BATT will be used for rtc0 from VRS.
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