Hi Rob, gentle ping on this question: On Tue, Sep 05, 2017 at 10:16:24AM +0200, Lukas Wunner wrote: > Hi Rob, > > sorry to bother you again, one more question popped up regarding the > MAX3191x DT bindings: > > On Tue, Aug 22, 2017 at 07:48:47PM -0500, Rob Herring wrote: > > On Mon, Aug 21, 2017 at 03:12:00PM +0200, Lukas Wunner wrote: > > > Add device tree bindings for Maxim MAX3191x industrial serializer. > [snip] > > > +Optional properties: > > > + - maxim,nchips: Number of chips in the daisy-chain (default is 1). > > Many I/O chips are daisy-chainable, so I've been wondering if a > common property should be introduced? > > The existing gpio-74x164.c uses "registers-number" to convey the number > of chips in the daisy chain. (Sans vendor prefix, multiple vendors sell > compatible versions of this chip.) > > gpio-pisosr.c takes a different approach and calculates the number of > chips in the daisy-chain by taking the common "ngpios" property > (Documentation/devicetree/bindings/gpio/gpio.txt) and dividing it by 8 > (which assumes that each chip has 8 inputs). > > Thanks, > > Lukas -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
