On Thursday 17 March 2016 09:56:22 Ivaylo Dimitrov wrote: > Hi, > > On 17.03.2016 02:49, Sebastian Reichel wrote: > > > >mh both, the power gpio is turned off in tpa6130a2_power(0). I guess > >if you don't see the problem during probe() everything works? > > > >I have another idea though: In opposit to the gpio, the regulator > >may also be referenced by something else/already enabled. I guess > >adding a sleep after the regulator_enable() is worth a try. > > > >Also I wonder if the same happens, if you avoid having the module > >available during boot and instead load it once everything has > >settled. That would rule out any side-effects of other modules > >being probed on the same i2c bus. > > > Well, I think I've figured it out - input pullups are not enabled > on i2c bus pins, in stock kernel we have: > > ./devmem2 0x480021BC > Value at address 0x480021BC (0x4001f1bc): 0x1180118 > > ./devmem2 0x480021C0 > Value at address 0x480021C0 (0x4001f1c0): 0x1180118 > > in mainline > > ./devmem2 0x480021BC > Value at address 0x480021BC (0xb6ff01bc): 0x1000100 > > ./devmem2 0x480021C0 > Value at address 0x480021C0 (0xb6f6d1c0): 0x1000100 > > I wonder how i2c devices work at all :) Is camera on same bus as tpa? Maybe this is reason why camera is non-functional too? > Will fix the board DTS file later on an will report Thanks for investigation! Is that problem in both DTS and also legacy board code? -- Pali Rohár pali.rohar@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
