Messages in this thread | | | Date | Fri, 5 Sep 2014 11:05:37 +0200 | Subject | Re: [PATCH 1/2] gpio: Add driver for AXM55xx SSP chip selects | From | Anders Berg <> |
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> On Thu, Sep 4, 2014 at 7:06 PM, Mark Brown <broonie@kernel.org> wrote: >> On Thu, Sep 04, 2014 at 07:04:44PM +0200, Linus Walleij wrote: >>> I need an ACK from Mark Brown on this before I apply. >>> The driver seems to do what it should, but I need Mark to >>> be OK with exporting the CS signals from an SSP/SPI block >>> to be exposed to Linux as GPIOs. >>> >>> (Top-posting and quoting patch verbatim so Mark gets it.) >> >> I don't see any sort of reasoning for this? > > Maybe there was some earlier, but this is an excellent opportunity > to repeat it... So Anders: why do you want to do this? >
Well, the problem with adding this to the spi-pl022 driver (as a vendor specific extension) is that this IP block unfortunately isn't distinguishable from the standard ARM PL022 implementation (same values in the PrimeCell identification registers). That's why I went down the GPIO path...
/Anders
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