WARNING: please write a help paragraph that fully describes the config symbol with at least 4 lines
#26: FILE: drivers/net/mdio/Kconfig:281:
+config MDIO_BUS_MUX_SOPHGO_CV1800B
+	tristate "Sophgo CV1800 MDIO multiplexer driver"
+	depends on ARCH_SOPHGO || COMPILE_TEST
+	depends on OF_MDIO && HAS_IOMEM
+	select MDIO_BUS_MUX
+	default m if ARCH_SOPHGO
+	help
+	  This module provides a driver for the MDIO multiplexer/glue of
+	  the Sophgo CV1800 series SoC. The multiplexer connects either
+	  the external or the internal MDIO bus to the parent bus.
 

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#48: 
new file mode 100644

WARNING: line length of 81 exceeds 80 columns
#92: FILE: drivers/net/mdio/mdio-mux-cv1800b.c:40:
+static int cv1800b_enable_mdio(struct cv1800b_mdio_mux *mdmux, bool internal_phy)

total: 0 errors, 3 warnings, 0 checks, 138 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit fd05a909363b ("net: mdio-mux: Add MDIO mux driver for Sophgo CV1800 SoCs") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 3 warnings, 0 checks, 138 lines checked