Hi all,
According to the imx7 data sheet I see that it looks like the imx7 can support a SIM card interface, can anybody confirm that this works? Also do you know if these signals are 1.8V or 3.3V?
Is there Linux support for this?
Yes iMX7 SOC does have SIM module. However we never tried or tested this feature. Linux driver is included in our Linux source code and images but it’s not enabled at Device Tree. To enable SIM support you need to set SIM1 or SIM2 status to “OK” plus do a proper pin muxing.
For more details please check:
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Chapter 8.3 Smart Card Interface - Subscriber Identification Module(SIM) of i.MX Linux Reference Manual
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Chapter 11.2 Subscriber Identification Module (SIM) of i.MX 7Dual Applications Processor Reference Manual
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Table 4.4.1 SODIMM 200 of Colibri iMX7 datasheet.
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Device tree customization article