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-Fuse API functions and commands
-
-The fuse API allows to control a fusebox and how it is used by the upper
-hardware layers.
-
-A fuse corresponds to a single non-volatile memory bit that can be programmed
-(i.e. blown, set to 1) only once. The programming operation is irreversible. A
-fuse that has not been programmed reads 0.
-
-Fuses can be used by SoCs to store various permanent configuration and data,
-e.g. boot configuration, security configuration, MAC addresses, etc.
-
-A fuse word is the smallest group of fuses that can be read at once from the
-fusebox control IP registers. This is limited to 32 bits with the current API.
-
-A fuse bank is the smallest group of fuse words having a common ID, as defined
-by each SoC.
-
-Upon startup, the fusebox control IP reads the fuse values and stores them to a
-volatile shadow cache.
-
-See the README files of the drivers implementing this API in order to know the
-SoC- and implementation-specific details.
-
-Functions / commands:
-
-   int fuse_read(u32 bank, u32 word, u32 *val);
-   fuse read <bank> <word> [<cnt>]
-      Read fuse words from the shadow cache.
-
-   int fuse_sense(u32 bank, u32 word, u32 *val);
-   fuse sense <bank> <word> [<cnt>]
-      Sense - i.e. read directly from the fusebox, skipping the shadow cache -
-      fuse words. This operation does not update the shadow cache.
-
-      This is useful to know the true value of fuses if an override has been
-      performed (see below).
-
-   int fuse_prog(u32 bank, u32 word, u32 val);
-   fuse prog [-y] <bank> <word> <hexval> [<hexval>...]
-      Program fuse words. This operation directly affects the fusebox and is
-      irreversible. The shadow cache is updated accordingly or not, depending on
-      each IP.
-
-      Only the bits to be programmed should be set in the input value (i.e. for
-      fuse bits that have already been programmed and hence should be left
-      unchanged by a further programming, it is preferable to clear the
-      corresponding bits in the input value in order not to perform a new
-      hardware programming operation on these fuse bits).
-
-   int fuse_override(u32 bank, u32 word, u32 val);
-   fuse override <bank> <word> <hexval> [<hexval>...]
-      Override fuse words in the shadow cache.
-
-      The fusebox is unaffected, so following this operation, the shadow cache
-      may differ from the fusebox values. Read or sense operations can then be
-      used to get the values from the shadow cache or from the fusebox.
-
-      This is useful to change the behaviors linked to some cached fuse values,
-      either because this is needed only temporarily, or because some of the
-      fuses have already been programmed or are locked (if the SoC allows to
-      override a locked fuse).
-
-Configuration:
-
-   CONFIG_CMD_FUSE
-      Define this to enable the fuse commands.