On Fri, Aug 01, 2014 at 12:04:35PM +0200, Stefan Assmann wrote: > probe function doesn't even get called without the clock being > powered/enabled. I've instrumented do_one_initcall() to verify this. > With the clock being enabled I see: > [ 19.693511] init/main.c do_one_initcall:792 initcall wl1271_init+0x0/0x38 [wlcore_sdio] > [ 20.993347] init/main.c do_one_initcall:792 initcall wl12xx_driver_init+0x0/0x14 [wl12xx] > If the clock is kept disabled none of the calls is made and we never get > to wl12xx_probe(). > The device might not be discoverable without the clock. > Maybe we should rethink the idea of doing that single register write to > enable the device in twl-core code, if the TWL6030 is present. > Alternatively this could be done by u-boot. Seems like something that > should have been done by firmware upfront. If this is a SDIO device please search the lists for discussion on how to handle enabling required resources for them - Ulf was working on something generic for that.
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