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-rw-r--r--src/soc/rockchip/rk3399/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3399/Kconfig b/src/soc/rockchip/rk3399/Kconfig
index 65b31d523e..ff857c022c 100644
--- a/src/soc/rockchip/rk3399/Kconfig
+++ b/src/soc/rockchip/rk3399/Kconfig
@@ -24,4 +24,12 @@ config PMIC_BUS
int
default -1
+config RK3399_SPREAD_SPECTRUM_DDR
+ bool "Spread-spectrum DDR clock"
+ default n
+ help
+ Select Spread Spectrum Modulator (SSMOD) is a fully-digital circuit
+ used to modulate the frequency of the Silicon Creations’ Fractional
+ PLL in order to reduce EMI.
+
endif