Hi, Oh, a few more comments: On Mon, Oct 13, 2014 at 3:33 AM, Thierry Reding <thierry.reding@xxxxxxxxx> wrote: > diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile > index c32d31981be3..1c932e7e7b8d 100644 > --- a/drivers/memory/Makefile > +++ b/drivers/memory/Makefile > @@ -12,4 +12,5 @@ obj-$(CONFIG_FSL_CORENET_CF) += fsl-corenet-cf.o > obj-$(CONFIG_FSL_IFC) += fsl_ifc.o > obj-$(CONFIG_MVEBU_DEVBUS) += mvebu-devbus.o > obj-$(CONFIG_TEGRA20_MC) += tegra20-mc.o > -obj-$(CONFIG_TEGRA30_MC) += tegra30-mc.o > + > +obj-$(CONFIG_ARCH_TEGRA) += tegra/ > diff --git a/drivers/memory/tegra/Makefile b/drivers/memory/tegra/Makefile > new file mode 100644 > index 000000000000..51b9e8fcde1b > --- /dev/null > +++ b/drivers/memory/tegra/Makefile > @@ -0,0 +1,5 @@ > +obj-y = tegra-mc.o > +obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30-mc.o > +obj-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114-mc.o > +obj-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124-mc.o > +obj-$(CONFIG_ARCH_TEGRA_132_SOC) += tegra124-mc.o You'll need a Kconfig and not just a makefile -- there are definitely dependencies on this driver (IOMMU in particular). Also, the problem of having a global enable bit that is only under control of TrustZone FW is a big problem -- if the bit is not set, the driver will not work (and the machine will crash). I think you'll need to come up with a way to detect that in the driver. I don't have a good idea of how it can be done though. -Olof -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html