> On 02.07.2015, at 06:57, Noralf Trønnes <noralf@xxxxxxxxxxx> wrote: > > > Den 01.07.2015 21:39, skrev Martin Sperl: >>> On 30.06.2015, at 19:42, Mark Brown <broonie@xxxxxxxxxx> wrote: >>> >>> This looks relevant: >>> >>>>>> On 22.06.2015, at 16:55, Jakub Kiciński <moorray3@xxxxx> wrote: >>>>>> As mentioned by Noralf UART1 is quite commonly used on Compute Modules. >>>>>> Proper driver - perhaps modelled as a bus - seems like a prerequisite >>>>>> for this work. You are also not using IRQ mux in DT binding example >>>>>> which is very misleading. > > [...] > >> Finally asking for a recommendation with regards to using a bus >> to arbitrate access to the enable register there was no feedback >> how this could be get implemented... > > Maybe you can use drivers/mfd/syscon.c to enable shared access to the > aux enable register. Then the spi driver could get the regmap with: > aux_regmap = syscon_regmap_lookup_by_phandle(np, "syscon"); Seems as if you found an answer to my original question of if there is a framework to handle this. > About sharing the aux interrupt, could this be implemented in irq-bcm2835 > as a Bank 3? Obviously it could, but the question is if it is not more overhead than using a shared interrupt (requesting an interrupt with the shared flag set) in the first place (like this driver currently does or i2c and USB do). I am working on a new version to make use of syscon. Thanks, Martin -- 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
