Messages in this thread | | | Date | Wed, 7 Jun 2017 17:27:50 +0200 | From | Alexandre Belloni <> | Subject | Re: [PATCH 46/58] clocksource/drivers: Add a new driver for the Atmel ARM TC blocks |
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On 07/06/2017 at 16:17:35 +0200, Daniel Lezcano wrote: > > You mean you don't like how it is used? Or you don't think having the > > timer full name is useful? > > The field is not needed, the only place where it is used is where we affect it. >
It is used in tcb_clksrc_register:
tc.clksrc.name = tc.name;
> > The main reason is that RobH doesn't want to have the use (clocksource > > or clockevent) of the timer in the DT so when probing a timer, I need to > > know whether I already have a clocksource to decide when it is time to > > register a clockevent. > > Yes, we had this discussion some weeks ago. > > This registered hack forces the DT to define first the clocksource, then the > clockevent. > > So, I suggest you fold the timer definition into a single one like the other > drivers.
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.
-- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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