Hi Bruce, First, thanks for the unbelievably quick response. I searched the Yocto sources and didn't find anything that was trying to manipulate either of the variables except my .cfg.
The memuconfig search for MAX9768 results in: Symbol: SND_SOC_MAX9768 [=n] Type : tristate Defined at sound/soc/codecs/Kconfig:917 Depends on: SOUND [=y] && !M68K && !UML && SND [=m] && SND_SOC [=m] Selected by: SND_SOC_ALL_CODECS [=n] && SOUND [=y] && !M68K && !UML && SND [=m] && SND_SOC [=m] && COMPILE_TEST [=n] && I2C [=y] To my (untrained) eye it seems that I need SND_SOC_ALL_CODECS & COMPILE_TEST. I tried setting them but I get a similar error for COMPILE_TEST. A search for it yields: Symbol: COMPILE_TEST [=n] Type : boolean Prompt: Compile also drivers which will not load Location: (1) -> General setup Defined at init/Kconfig:56 Which doesn't seem to suggest that there should be any problems setting it. The search for MAX1363 yields: Symbol: MAX1363 [=n] Type : tristate Prompt: Maxim max1363 ADC driver Location: -> Device Drivers -> Industrial I/O support (IIO [=m]) (1) -> Analog to digital converters Defined at drivers/iio/adc/Kconfig:218 Depends on: IIO [=m] && I2C [=y] Selects: IIO_BUFFER [=y] && IIO_TRIGGERED_BUFFER [=n] Which doesn't seem to me reveal any reason that I shouldn't be able to set it. Regards, Greg ________________________________ From: Bruce Ashfield <bruce.ashfi...@windriver.com> Sent: Friday, December 22, 2017 12:27:22 PM To: Greg Wilson-Lindberg; yocto@yoctoproject.org Subject: Re: [yocto] Kernel configuration problem/confusion On 12/22/2017 3:51 PM, Greg Wilson-Lindberg wrote: > I'm trying to add some kernel configuration to a Raspberry pi3 yocto > build. I've got the .cfg fragment being read in, but I'm getting > warnings that indicate that they are not making the desired changes. > > > The first one is CONFIG_SND_SOC_MAX9768. This is a sound codec and the > Kconfig file has it in a long list of select's. the one for the MAX9768 is: > > select CONFIG_SND_SOC_MAX9768 if I2C > > I2C is set, but CONFIG_SND_SOC_MAX9768 ends up undefined. the warning > I'm getting is: > > ---------- CONFIG_SND_SOC_MAX9768 ----------------- > Config: CONFIG_SND_SOC_MAX9768 > From: > /home/gwilson/Qt-5.9/Yocto-build-RPi3/build-raspberrypi3/tmp/work-shared/raspberrypi3/kernel-source/.kernel-meta/configs/Scribe.cfg > Requested value: CONFIG_SND_SOC_MAX9768=y > Actual value: > > Config 'SND_SOC_MAX9768' has the following conditionals: > Dependency values are: > > SND_SOC_MAX9768 ends up not being selected even though I try to set it > ti 'y' > > > The second one is CONFIG_MAX1363, this is an ADC that I'm trying to set, > the warning is: > > ---------- CONFIG_MAX1363 ----------------- > Config: CONFIG_MAX1363 > From: > /home/gwilson/Qt-5.9/Yocto-build-RPi3/build-raspberrypi3/tmp/work-shared/raspberrypi3/kernel-source/.kernel-meta/configs/Scribe.cfg > Requested value: CONFIG_MAX1363=y > Actual value: # CONFIG_MAX1363 is not set > > Config 'MAX1363' has the following conditionals: > I2C (value: "y") > Dependency values are: > I2C [y] > > It ends up being not set. In both cases the value that I'm trying to set > is ignored. Any insight would be greatly appreciated. The python library that tries to detangle the Kconfig dependencies isn't perfect (but I do have an update for it pending), so you might not be getting the entire story in that information dumb. Two things to check: - there are no other fragments that are disabling the same option - use menuconfig in the kernel to search the option and see what it reports for the dependencies. There's some constraint or overriding command that is not allowing the option into the final config, we just need to track it down. Bruce > > > Regards, > > Greg > > >
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