kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_BACKLIGHT_EP93XX.
Result is shown for kernelversion 5.9.9

Cirrus EP93xx Backlight Driver

modulename: ep93xx_bl.ko
configname: CONFIG_BACKLIGHT_EP93XX

Linux Kernel Configuration
└─> Device Drivers
└─> Graphics support
└─> Backlight & LCD device support
└─> Cirrus EP93xx Backlight Driver

If you have a LCD backlight connected to the BRIGHT output of
the EP93xx, say Y here to enable this driver.

To compile this driver as a module, choose M here: the module will
be called ep93xx_bl.


source code:


drivers/video/backlight/ep93xx_bl.c