Samsung Exynos clock output driver

modulename: clk-exynos-clkout.ko

configname: CONFIG_EXYNOS_CLKOUT

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>Samsung Exynos clock output driver
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Support for the clock output (XCLKOUT) present on some of Samsung
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.

source code: