[PATCH] powerpc: Create "rom" (MTD) device prpmc2800
Segher Boessenkool
segher at kernel.crashing.org
Thu Jun 7 11:55:44 EDT 2007
> Any representation of flash devices in the device-tree should ideally
> have 'bus width' and 'interleave' properties to contain this
> information.
>
> The 'bus width' cannot necessarily be inferred, especially where a
> given
> bus can be configured to allow multiple sizes of access. It's purely a
> function of how the flash chips are wired up. That's why we actually
> call it 'bank width', not 'bus width' in the Linux code.
Ah, "bank width" as in "bus width" per chip select. I see.
So I think the best thing to have would be
compatible "cfi-flash"
bank-width like you said
device-width width of a single flash device
reg complete address range of this thing
and then the Linux OF CFI flash code / MTD code just keeps
on probing devices from that address range until it has it
filled.
Sounds good / comments / anything I missed?
Segher
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