[meta-ti] Trouble modifying defconfig for linux-ti-staging_rt recipe

[Florian Wickert]

You are right, it does not inherit the yocto linux bbclass.
Try setting this in your bbappend file:
KERNEL_CONFIG_FRAGMENTS_append = " ${WORKDIR}/eem.cfg"

Regards,
Florian


On 03/20/2017 04:44 PM, Glenn Schmottlach wrote:
> I am having trouble modifying the kernel configuration for the
> following TI kernel recipe using the Yocto Morty environment:
>
> linux-ti-staging-rt_4.9.bb
>
> I have created my own layer and with a *.bbappend file for this recipe, e.g.
>
> linux-ti-staging-rt_4.9.bbappend
>
> It appears the TI kernel recipes are not (yet) proper "Yocto" kernel
> recipes in that they are not "fragment" aware. It appears I cannot do
> the following inside of my *.bbappend recipe:
>
> FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
> SRC_URI += "file://eem.cfg"
>
> Inside of "eem.cfg" I want to set the following kernel options:
>
> CONFIG_USB_NET_CDC_EEM=m
> CONFIG_USB_F_EEM=m
> CONFIG_USB_ETH_EEM=y
>
> This has no affect. I tried creating my own defconfig based on the
> '.config' generated from the original recipe. I modified my *.bbappend
> file as follows:
>
> FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
> SRC_URI += "file://defconfig"
>
> Again, my defconfig is not applied to the build.
>
> I even tried patching kernel-source/ti_config_fragments and placing a
> eem.cfg in that directory hoping the configuration generation script
> (defconfig_builder.sh) might apply this fragment.
>
> FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
> SRC_URI += "file://0001-eem-config.patch"
>
> Where the patch contains:
>
> Index: kernel-source/ti_config_fragments/eem.cfg
> ===================================================================
> --- /dev/null
> +++ kernel-source/ti_config_fragments/eem.cfg
> @@ -0,0 +1,4 @@
> +CONFIG_USB_NET_CDC_EEM=m
> +CONFIG_USB_F_EEM=m
> +CONFIG_USB_ETH_EEM=y
> +
>
> Unfortunately this did not work either.
>
> I suspect this question has been asked before, but what is the
> RECOMMENDED procedure for making kernel configuration changes to the
> TI kernel recipes in a Yocto environment? What methods have others
> used to tweak the TI kernel options from their *.bbappend files?
>
> Thanks for any insights . . .