Hi, On Tue, Jul 08, 2014 at 01:00:23PM -0700, Stephen Boyd wrote: > On MSM chips we have some efuses (called qfprom) where we store things > like calibration data, speed bins, etc. I don't have something constructive to say here, just want to point out that on efm32 there is something similar. It's called "Device Information (DI) Page" and contains "calibration values, a unique identification number and other useful data". Currently it is unused in mainline, but in my tree I access it directly to determine cpu type (part number, part family number and Production ID), flash and ram size, and the calibration settings for the ADC. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html