[PATCH 2/3] soc: samsung: Do not build ARMv7 PMU drivers on ARMv8

Bartlomiej Zolnierkiewicz
2017-03-14T14:06:23Z

On Saturday, March 11, 2017 11:38:55 PM Krzysztof Kozlowski wrote:
> 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: Krzysztof Kozlowski <krzk@kernel.org>

Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics