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- Driver implementing the fuse API for Freescale's IC Identification Module (IIM)
- This IP can be found on the following SoCs:
- - MPC512x,
- - i.MX25,
- - i.MX27,
- - i.MX31,
- - i.MX35,
- - i.MX51,
- - i.MX53.
- The section numbers in this file refer to the i.MX25 Reference Manual.
- A fuse word contains 8 fuse bit slots, as explained in 30.4.2.2.1.
- A bank contains 256 fuse word slots, as shown by the memory map in 30.3.1.
- Some fuse bit or word slots may not have the corresponding fuses actually
- implemented in the fusebox.
- See the README files of the SoCs using this driver in order to know the
- conventions used by U-Boot to store some specific data in the fuses, e.g. MAC
- addresses.
- Fuse operations:
- Read
- Read operations are implemented as read accesses to the shadow registers,
- using "Word y of Bank x" from the register summary in 30.3.2. This is
- explained in detail in 30.4.5.1.
- Sense
- Sense operations are implemented as explained in 30.4.5.2.
- Program
- Program operations are implemented as explained in 30.4.5.3. Following
- this operation, the shadow registers are reloaded by the hardware (not
- immediately, but this does not make any difference for a user reading
- these registers).
- Override
- Override operations are implemented as write accesses to the shadow
- registers, as explained in 30.4.5.4.
- Configuration:
- CONFIG_FSL_IIM
- Define this to enable the fsl_iim driver.
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