On Thursday 02 October 2014 16:14:43 Kalle Valo wrote: > Hi Device Tree gurus, > > ath10k is a wireless driver for Qualcomm Atheros 802.11ac hardware and > located in drivers/net/wireless/ath/ath10k/. Currently it only supports > PCI devices. > > Some of the devices store the calibration data to the host flash and the > bootloader reads the data from the flash. And now we need a method to > deliver the calibration data from bootloader to ath10k. Basically our > requirements are: > > * ath10k must support any number of radios (one radio per PCI device). > > * The calibration data is now 2116 bytes, in the future it might be > longer. The data is unique for each radio and is created at the > factory. > > * ath10k must be able to reliably map the PCI device (=radio) to the > correct calibration data. Maybe with using PCI bus and slot numbers? > > We have been trying to find similar cases from other drivers but no > luck. Basically my question is how to do this properly with Device Tree? > Especially how to map the calibration data to correct PCI device? Are > there any examples which would help us to implement this? When you know the PCI bus/device/function ID of the device, you can put a device node in the dts file that corresponds to the PCI dev, and you can find the of_node pointer from pci_dev->dev.of_node. 2116 is probably ok to put into a DT property of that device directly. Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
