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@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>

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