add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/memory/samsung/Kconfig
..
..
@@ -7,8 +7,28 @@
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 if SAMSUNG_MC
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+config EXYNOS5422_DMC
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+	tristate "Exynos5422 Dynamic Memory Controller driver"
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+	depends on ARCH_EXYNOS || (COMPILE_TEST && HAS_IOMEM)
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+	select DDR
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+	depends on DEVFREQ_GOV_SIMPLE_ONDEMAND
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+	depends on (PM_DEVFREQ && PM_DEVFREQ_EVENT)
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+	help
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+	  This adds driver for Exynos5422 DMC (Dynamic Memory Controller).
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+	  The driver provides support for Dynamic Voltage and Frequency Scaling in
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+	  DMC and DRAM. It also supports changing timings of DRAM running with
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+	  different frequency. The timings are calculated based on DT memory
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+	  information.
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+
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 config EXYNOS_SROM
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 	bool "Exynos SROM controller driver" if COMPILE_TEST
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 	depends on (ARM && ARCH_EXYNOS) || (COMPILE_TEST && HAS_IOMEM)
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+	help
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+	  This adds driver for Samsung Exynos SoC SROM controller.  The driver
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+	  in basic operation mode only saves and restores SROM registers
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+	  during suspend.  If however appropriate device tree configuration
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+	  is provided, the driver enables support for external memory
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+	  or external devices.
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+	  If unsure, say Y on devices with Samsung Exynos SocS.
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 endif