From mboxrd@z Thu Jan 1 00:00:00 1970 From: b.zolnierkie@samsung.com (Bartlomiej Zolnierkiewicz) Date: Tue, 14 Mar 2017 15:06:23 +0100 Subject: [PATCH 2/3] soc: samsung: Do not build ARMv7 PMU drivers on ARMv8 In-Reply-To: <20170311213856.21701-3-krzk@kernel.org> References: <20170311213856.21701-1-krzk@kernel.org> <20170311213856.21701-3-krzk@kernel.org> Message-ID: <10434341.iCgJC0vsO4@amdc3058> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Reviewed-by: Bartlomiej Zolnierkiewicz Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics