On 06/13/2014 10:25 AM, Tony Lindgren wrote: > * Roger Quadros <[email protected]> [140611 01:58]: >> Some devices (e.g. TUSB6010, omap-onenand) need to reconfigure the GPMC >> timings in order to operate with different peripheral clock frequencies. >> Introduce omap_gpmc_retime() to allow them to do that. The driver >> needs to pass the chips select number, GPMC settings and Device timings to >> omap_gpmc_retime(). >> >> NOTE: Device tree and board code must still pass the most conservative >> timings to GPMC so that the device can be probed by the respective driver. >> e.g. Onenand must operate in asynchronous mode at bootup. The device driver >> can then request for more optimal timings via omap_gpmc_retime(). > > Hmm but many of the devices are Linux generic like sms91x and 8250 so it's > not nice to start stuffing omap bus specific data there.
Those drivers should never need to use this function. Hopefully they will work with a one time setup where we specify the timings in the DT. This function is primarily for use by omap-onenand and tusb6010, which are both OMAP specific. cheers, -roger > > I wonder if we should just keep device specific gpmc-smc91x.c etc > in drivers/memory? > > Regards, > > Tony > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
