We have developed a custom board based on OMAP-L138 and Linux. The hw project is a mix between different EVM schematics where we added needed hw for our application (power meter). The RTC is feeded from an external TCXO for stability reasons. Below is the schematic of the RTC part. We have different boards, where the RTC seems to not start, even if the external signals, 32.768kHz and 1.2VRTC are OK. The power for the complete RTC part (TCXO, level shifter, and OMAP RTC module) is maintained from a supercap. The RTC status is monitored from Linux console with "hwclock" command. The PMU is TPS65070, in the classic configuration (power ON sequence) for the OMAP-L138. Please help.
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