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<smaeul> accurate measurements from the D1 thermal sensor require copying a calibration value from an eFuse to a register in the audio codec's MMIO space...
<smaeul> any suggestions on how to model this? other than "handle it in U-Boot board code and don't think about it too hard", which is what I'm doing now
<smaeul> the value is the voltage of the AVCC bandgap reference ("BG_TRIM" in the manual), so the codec could expose a regulator, which is consumed by the THS
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<pentabarf1> Hi is it possible to check secure boot is enabled from "normal world" ? I am on H3
<gamiee> hi pentabarf1 , yes
<pentabarf1> gamiee: how?
<gamiee> hexdump -C /sys/bus/nvmem/devices/sunxi-sid0/nvmem
<pentabarf1> i am on a secured device right now and everything is 0x00. I will try on a non secured device. Will i see the content of SID?
<gamiee> hmm, everything is 0x00? And yes, I'm seeing it on my H3
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<pentabarf1> ok tried it at non secured device and it shows the content of SID. So when i get all zero it should be secured i guess
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<smaeul> some SoCs let you see the first bit of the SID even when secured (up to 0x40 I think), but H3 is too old for that
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<gamiee> smaeul: but you can't read it within userspace, kernel still can read it, or?
<gamiee> Because I'm storing special serial number in SID and currently reading it via nvmem, but device is not secured.
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