Messages in this thread | | | Subject | Re: [PATCH 1/2] spi: support inter-word delay requirement for devices | From | Jonas Bonn <> | Date | Mon, 28 Jan 2019 12:51:02 +0100 |
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On 28/01/2019 12:47, Mark Brown wrote: > On Mon, Jan 28, 2019 at 08:41:05AM +0100, Geert Uytterhoeven wrote: >> On Sat, Jan 26, 2019 at 4:40 PM Jonas Bonn <jonas@norrbonn.se> wrote: > >>> spi-3wire: again, only set by MAXIM DS-1302 which always needs this >>> setting; driver could set this > >> For DS1302, this is probable true. >> Some devices may support both 4-wire or 3-wire mode? > > IIRC yes.
Just for the record, the datasheet says it's exclusively 3-wire. But it's not important...
/Jonas
> >>> Yeah, that one make sense. But if the DT is only overriding the maximum >>> device frequency that the driver should otherwise be setting, why is >>> spi-max-frequency a _required_ property? > >> That's a good question. Legacy? > > It's a documentation error. >
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