On Fri, Jun 19, 2015 at 1:40 PM, Lars-Peter Clausen <lars@xxxxxxxxxx> wrote: > On 06/19/2015 08:45 AM, Shubhrajyoti Datta wrote: >> >> On Thu, Jun 18, 2015 at 8:44 PM, Lars-Peter Clausen <lars@xxxxxxxxxx> >> wrote: >>> >>> On 06/18/2015 02:46 PM, Shubhrajyoti Datta wrote: >>>> >>>> >>>> Hi , >>>> >>>> I was wondering if there is any plans or existing support for JESD204B. >>>> I was thinking of IIO. However any other ideas may be welcome. >>> >>> >>> >>> Yes, IIO is the way to go. We have some out-of-tree drivers for JESD204B >>> chips. >> >> >> Great. >> >>> They are not quite ready yet, but we'll get there >> >> May be sharing early could get some alignment. > > > It mostly all at > https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/iio/adc/ > > E.g. > https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/iio/adc/cf_axi_jesd204b_v51.c > and > https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/iio/adc/cf_axi_adc_core.c > > But it is nothing you'd want to copy infrastructure wise. The drivers have a > lot of built-in assumptions about the underlying topology and will really > only work with a certain JESD converter and JESD host controller > combination. OK still good stuff. > >> >> >> The thing is the data rate change and the related clock tree >> dependencies that it may bring. >> That part looked tricky to me. So thought of talking to the community >> before sketching something >> not compatible. :-) > > > Yeah, I think that's one of the parts we haven't really figured out yet. The > JESD transceiver that we are using on the host system unfortunately is not > re-programmable at runtime. > > But otherwise we are using the normal clock framework to model the various > clock relationships and use it to enable/disable and setup the clocks as > required. Thanks for the heads up. > > - Lars > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in
