Messages in this thread | | | Date | Tue, 19 Jul 2022 18:53:25 +0100 | From | Mark Brown <> | Subject | Re: [RFC PATCH 1/2] spi: Add multiple CS support for a single SPI device |
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On Tue, Jul 19, 2022 at 01:21:41PM +0000, Mahapatra, Amit Kumar wrote:
> I agree, so for checking the controller multiple chip select capability(using > more than one chip select at once) we can define a new spi controller DT > property like "multi-cs-cap"(please suggest a better name). > The controller that can support multiple chip selects should have this property > in the spi controller DT node. The spi core will check ctlr->multi-cs-cap to > operate multiple chip select in parallel.
I'm not sure this needs to be a DT property, it's more just something we infer from the compatible. The name seems fine, as does the flag in the controller data.
> > the chip selects are available and that the controller can do something useful > > with them (and probably have an implementation in the core for doing so via > > GPIO).
> Here are you referring to the usecase in which a controller implementing multi CS > support using GPIO?
Yes, we probably ought to. [unhandled content-type:application/pgp-signature] | |