On Fri, May 31, 2013 at 23:11:22, Kevin Hilman wrote: > Hebbar Gururaja <gururaja.hebbar@xxxxxx> writes: > > > On some platforms (like AM33xx), a special register (RTC_IRQWAKEEN) > > is available to enable Wakeup feature for Alarm Events. > > > > Since new platforms/Boards are now added through DT only, this feature > > is supported via DT property only. > > > Platforms using such IP should add the property "ti,has_irq_wake_enb" > > in rtc DT node. > > This is a property of the IP, not the board. Can't you detect this > based on the revision of the IP? Here is what I found out till now. 1. rtc-omap driver is used by Davinci, OMAP-1/2 & AM33xx SoC. 2. Only AM33xx soc rtc ip has revision register (& populated). Older OMAP Or davinci doesn't have this register. 3. AFAIK, this was the reason why Afzal used platform_device_id & of_device_id->data method to detect new versions (commit 9e0344dcc225fe1a0e8b8af9ff7df44ec4613580) So now either a. I can follow the same method and add new member to omap_rtc_devtype & add a new compatible in omap_rtc_of_match in rtc-omap.c or b. use dt property to indicate existence of above property. Kindly let me know your opinion about the same. > > Kevin > Regards, Gururaja -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
