Re: [RFC] staging: nvec: cannot configure to compile driver for testing

[Philipp Hortmann]

On 7/1/24 04:13, Ágatha Isabelle Chris Moreira Guedes wrote:
> Hi!
>
> On Sun, Jun 30, 2024 at 12:37:53PM GMT, Philipp Hortmann wrote:
> > When start make menuconfig
> >
> > and search with / for NVEC I can see:
> >
> > Symbol: MFD_NVEC [=n]
> > Type  : tristate
> >
> >                                         Defined at
> > drivers/staging/nvec/Kconfig:2
> > Prompt: NV Tegra Embedded Controller SMBus Interface
> > Depends on: STAGING [=y] && I2C [=y] && GPIOLIB [=y] && ARCH_TEGRA
> > Location:
> >
> >   -> Device Drivers                                                      (2)
> > -> Staging drivers (STAGING [=y])
> > 	 -> NV Tegra Embedded Controller SMBus Interface (MFD_NVEC [=n])
> > Selects: MFD_CORE [=y]
> >
> >
> > But I cannot jump or go into "NV Tegra Embedded Controller SMBus Interface"
>
> Have you checked whether you have its dependencies enabled?
>
> It seems like you have STAGING, I2C and GPIOLIB, but not ARCH_TEGRA.
>
> Is your kernel configured for the right architecture? Are you using
> ARCH=arm environment variable? You can do this by running the command:
>
> $ ARCH=arm make menuconfig
>
> > In my .config file there is no string "NVEC" at all.
>
> If it's generated by `make menuconfig` and you don't have the
> dependencies, as far as I can recall it's not supposed to have this
> string at all.
>
> > How to config this driver to be compiled?
>
> I haven't worked much with kernel for ARM-based SoCs, but I think as
> soon as you have your kernel properly configured for the correct
> architecture and having all dependencies met  you'll see it there. I
> just tested and it shows up for me


Hi,

thanks for the hints. Here the steps I took on my x86_64:

saved my .config file.
sudo apt install gcc-aarch64-linux-gnu
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
make defconfig
make menuconfig
	used / NVEC to find driver(s) and set them all to modules
make scripts prepare modules_prepare
make -j6
make -C . M=drivers/staging/nvec

Thanks for your support.

Bye Philipp