On Mon, Dec 08, 2014 at 05:59:11PM +0100, Geert Uytterhoeven wrote: > > I think that implementing support for this extra SPI layer will > > actually require more code/tricks than a separated driver. > > Yes, it will require more code, as spi-gpio is more generic than your simple > implementation. But the end result is more flexible and reusable. > > The only thing missing is the programmable OE and reset pins, > which are assumed hardwired by the gpio-74x164 driver. > These could be implemented using new gpio-oe and gpio-reset > properties.
From my (very) vague memories of it, OE was actually supported by using it as spi-gpio's chip select. So I'd say that only the gpio-reset should be implemented. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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