[PATCH 2/2] [POWERPC] Describe memory-mapped RAM&ROM chips of bindings
segher at kernel.crashing.org
Wed Mar 26 10:52:37 EDT 2008
> + Dedicated RAM and ROM chips are often used as storage for
> temporary or
> + permanent data in embedded devices. Possible usage include
> + storage in battery-backed SRAM, semi-permanent storage in
> dedicated SRAM
> + to preserve data accross reboots and firmware storage in
> dedicated ROM.
> + - compatible : should contain the specific model of RAM/ROM
> + used, if known, followed by either "physmap-ram" or
> + - reg : Address range of the RAM/ROM chip
> + - bank-width : Width (in bytes) of the RAM/ROM bank. Equal to the
> + device width times the number of interleaved chips.
> + - device-width : (optional) Width of a single RAM/ROM chip. If
> + omitted, assumed to be equal to 'bank-width'.
Maybe I'm rehashing some old discussion here, if so, sorry; but why
do you have bank-width and device-width here? What useful information
does it provide? If this is about saying what the preferred (or only
possible) access width is, better names are in order.
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