Re: [PATCH] clk: samsung: allow building the clkout driver as module

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Hi Krzysztof,

On 11/11/20 4:37 AM, Krzysztof Kozlowski wrote:
> The Exynos clock output driver can be built as module (it does not have
> to be part of core init process) for better customization.  Adding a
> KConfig entry allows also compile testing for build coverage.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> ---
>  drivers/clk/samsung/Kconfig             | 10 ++++++++++
>  drivers/clk/samsung/Makefile            |  2 +-
>  drivers/clk/samsung/clk-exynos-clkout.c |  1 +
>  3 files changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/samsung/Kconfig b/drivers/clk/samsung/Kconfig
> index 57d4b3f20417..b6b2cb209543 100644
> --- a/drivers/clk/samsung/Kconfig
> +++ b/drivers/clk/samsung/Kconfig
> @@ -19,6 +19,16 @@ config EXYNOS_AUDSS_CLK_CON
>  	  on some Exynos SoC variants. Choose M or Y here if you want to
>  	  use audio devices such as I2S, PCM, etc.
>  
> +config EXYNOS_CLK_OUT
> +	tristate "Samsung Exynos clock output driver"
> +	depends on COMMON_CLK_SAMSUNG
> +	default y if ARCH_EXYNOS
> +	help
> +	  Support for the clock output (XCLKOUT) driver present on some of
> +	  Exynos SoC variants. Usually the XCLKOUT is used to monitor the
> +	  status of the certains clocks from SoC, but it could also be tied to
> +	  other devices as an input clock.
> +
>  # For S3C24XX platforms, select following symbols:
>  config S3C2410_COMMON_CLK
>  	bool "Samsung S3C2410 clock controller support" if COMPILE_TEST
> diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile
> index 1a4e6b787978..4adbf972e9f6 100644
> --- a/drivers/clk/samsung/Makefile
> +++ b/drivers/clk/samsung/Makefile
> @@ -15,7 +15,7 @@ obj-$(CONFIG_SOC_EXYNOS5420)	+= clk-exynos5420.o
>  obj-$(CONFIG_SOC_EXYNOS5420)	+= clk-exynos5-subcmu.o
>  obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)	+= clk-exynos5433.o
>  obj-$(CONFIG_EXYNOS_AUDSS_CLK_CON) += clk-exynos-audss.o
> -obj-$(CONFIG_ARCH_EXYNOS)	+= clk-exynos-clkout.o
> +obj-$(CONFIG_EXYNOS_CLK_OUT)	+= clk-exynos-clkout.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
> diff --git a/drivers/clk/samsung/clk-exynos-clkout.c b/drivers/clk/samsung/clk-exynos-clkout.c
> index f5f8a956b316..9ec2f40cc400 100644
> --- a/drivers/clk/samsung/clk-exynos-clkout.c
> +++ b/drivers/clk/samsung/clk-exynos-clkout.c
> @@ -72,6 +72,7 @@ static const struct of_device_id exynos_clkout_ids[] = {
>  		.data = &exynos_clkout_exynos5,
>  	}, { }
>  };
> +MODULE_DEVICE_TABLE(of, exynos_clkout_ids);
>  
>  /*
>   * Device will be instantiated as child of PMU device without its own
> 

Acked-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics



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