On 07/06/2017 at 23:08:48 +0200, Daniel Lezcano wrote: > > I was going to agree but this is not flexible enough because the > > quadrature decoder always uses the first two channels. So on some > > products, we may have: > > - TCB0: > > o channels 0,1: qdec > > o channel 2: clocksource > > > > - TCB1: > > o channels 0,1: qdec > > o channel 2: clockevent > > > > This avoids wasting TCB channels. > > Ok. In this case you can check if the interrupt is specified for the node, if > yes, then it is a clockevent. >
But currently it is always specified in the SoC's dtsi. I don't find that too practical to push that to the board's dts. Also, lying by omission (the IRQ is always wired) in the DT is not different from having a property selecting which timer is the clocksource and which is the clockevent. -- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
