• Krzysztof Kozlowski's avatar
    soc: samsung: Do not build ARMv7 PMU drivers on ARMv8 · a0ebf662
    Krzysztof Kozlowski authored
    The Exynos Power Management Unit (PMU) drivers contain quite large
    static arrays of register values necessary for given Exynos SoC to enter
    low power mode.  All this data is useless for ARMv8 SoC like
    Exynos5433, because the image will not be shared between ARMv7 and
    ARMv8.
    
    Add additional Kconfig symbol for selecting the SoC-specific driver
    addons thus skipping the useless data in the final image (this is
    similar approach to chosen for Exynos clock controller drivers):
     - exynos-pmu driver will be compiled on both architectures ARMv7
       and ARMv8,
     - additional driver_data for ARMv7 SoCs will not be built on ARMv8
       and a macro will return NULL for them in of_device_id - this should
       be safe as these compatibles cannot match on ARMv7 and driver
       anyway handles NULL driver_data,
     - on ARMv8 compile only exynos-pmu driver which exposes the
       syscon-regmap for PMU address space.
    Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
    Reviewed-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Reviewed-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
    a0ebf662
Makefile 202 Bytes