Hi Benoit, On 05/21/2012 11:58 AM, Cousson, Benoit wrote: > Hi Jon, > > On 5/16/2012 1:35 AM, Jon Hunter wrote: >> From: Jon Hunter<[email protected]> >> >> Currently, the dmtimer determines whether an timer can support an >> external >> clock source (sys_altclk) for driving the timer by the IP version. Only >> OMAP24xx devices can support an external clock source, but the IP version >> between OMAP24xx and OMAP3xxx is common and so this incorrectly indicates >> that OMAP3 devices can use an external clock source. >> >> Rather than use the IP version, use the OMAP_TIMER_HAS_ALTCLK flag added >> to the HWMOD timer device attributes. By doing this, this allows us to >> eliminate the "timer_ip_version" variable passed as part of the >> platform data. > > I do not think this is the right way to handle that. The timer IP itself > does have only one input clock. > This is the mux before that clock that will have several inputs > depending on the SoC revision. > So this is purely PRCM stuff and has nothing to do with the timer IP > itself. > > The OMAP_TIMER_HAS_ALTCLK is thus not a timer IP information and cannot > be stored inside timer hwmod.
Ok, understood. > In fact, if the alt clock is there the "alt_clk" alias will be there and > thus you can use the clk_get(dev, "alt_clk") to figure out if the clock > is there or not. Ok, I can do this and did think about it, but then wondered why it had been done this way in the first place? However, I prefer this approach too as it simplifies the code :-) So I modify how this is handled. Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
