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Message-id: <1455603632-11158-3-git-send-email-k.kozlowski@samsung.com> Date: Tue, 16 Feb 2016 15:20:31 +0900 From: Krzysztof Kozlowski <k.kozlowski@...sung.com> To: Kukjin Kim <kgene@...nel.org>, Krzysztof Kozlowski <k.kozlowski@...sung.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...eaurora.org>, Sylwester Nawrocki <s.nawrocki@...sung.com>, Tomasz Figa <tomasz.figa@...il.com>, linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, linux-clk@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>, Kevin Hilman <khilman@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, Pankaj Dubey <pankaj.dubey@...sung.com>, Chanwoo Choi <cw00.choi@...sung.com> Subject: [PATCH v5 2/3] clk: samsung: Don't build ARMv8 clock drivers on ARMv7 Currently the Exynos5433 (ARMv8 SoC) clock driver depends on ARCH_EXYNOS so it is built also on ARMv7. This does not bring any kind of benefit. There won't be a single kernel image for ARMv7 and ARMv8 SoCs (like multi_v7 for ARMv7). Instead build clock drivers only for respective SoC's architecture. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com> --- Changes since v4: 1. Move ARM64 clock entry just before COMMON_CLK_SAMSUNG to make it more consistent with selecting behavior. Newer platforms just select COMMON_CLK_SAMSUNG. Only S3C24XX select specific clock symbols. 2. Re-work behaviour on COMPILE_TEST=y to fix ignored compilation when COMPILE_TEST=y but COMMON_CLK_SAMSUNG=n. The COMMON_CLK_SAMSUNG=y is necessary always to compile ARM64 clocks. 3. I received reviews and tests (Chanwoo, Javier, Andi, Stephen - thank you guys!)... but the patch is now different so I decided to drop them. I am kindly asking for review/testing (again...). Changes since v3: 1. Rebase on next-20160127. Changes since v2: 1. Follow Arnd's advice making EXYNOS_ARM64_COMMON_CLK user-visible when COMPILE_TEST is enabled. 2. Dropped accumulated tags because the logic is now different. Changes since v1: 1. Use one Kconfig symbol for clocks of all ARM64 SoCs (after discussion): EXYNOS_ARM64_COMMON_CLK. 2. Minor cleanups after Tomasz's comments. 3. Added tags: Chanwoo's, Sylwester's, Alim's and Tomasz's (the tags were given for v1 but assuming that change from 1. is not major enough to require re-tagging). --- drivers/clk/samsung/Kconfig | 10 +++++++++- drivers/clk/samsung/Makefile | 4 ++-- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/clk/samsung/Kconfig b/drivers/clk/samsung/Kconfig index dd6093a33f84..20c5fe92ab4a 100644 --- a/drivers/clk/samsung/Kconfig +++ b/drivers/clk/samsung/Kconfig @@ -1,6 +1,15 @@ +# Recent Exynos platforms should just select COMMON_CLK_SAMSUNG: config COMMON_CLK_SAMSUNG bool "Samsung Exynos clock controller support" if COMPILE_TEST + # Clocks on ARM64 SoCs (e.g. Exynos5433, Exynos7) are chosen by + # EXYNOS_ARM64_COMMON_CLK to avoid building them on ARMv7: + select EXYNOS_ARM64_COMMON_CLK if ARM64 && ARCH_EXYNOS +config EXYNOS_ARM64_COMMON_CLK + bool "Samsung Exynos ARMv8-family clock controller support" if COMPILE_TEST + depends on COMMON_CLK_SAMSUNG + +# For S3C24XX platforms, select following symbols: config S3C2410_COMMON_CLK bool "Samsung S3C2410 clock controller support" if COMPILE_TEST select COMMON_CLK_SAMSUNG @@ -22,4 +31,3 @@ config S3C2412_COMMON_CLK config S3C2443_COMMON_CLK bool "Samsung S3C2443 clock controller support" if COMPILE_TEST select COMMON_CLK_SAMSUNG - diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile index 5f6833ea355d..fc367d4b2902 100644 --- a/drivers/clk/samsung/Makefile +++ b/drivers/clk/samsung/Makefile @@ -10,11 +10,11 @@ obj-$(CONFIG_SOC_EXYNOS5250) += clk-exynos5250.o obj-$(CONFIG_SOC_EXYNOS5260) += clk-exynos5260.o obj-$(CONFIG_SOC_EXYNOS5410) += clk-exynos5410.o obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5420.o -obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos5433.o +obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos5433.o obj-$(CONFIG_SOC_EXYNOS5440) += clk-exynos5440.o obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-audss.o obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-clkout.o -obj-$(CONFIG_ARCH_EXYNOS7) += clk-exynos7.o +obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o obj-$(CONFIG_S3C2412_COMMON_CLK)+= clk-s3c2412.o -- 2.5.0
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