3cd1d4651c
When we want to use clock from RCC to clock Ethernet PHY (with ETHCK)
we need to check if value of clock rate is authorized.
If ETHCK is unused, the ETHCK frequency is 0Hz and validation fails.
It makes no sense to validate unused ETHCK, so skip the validation.
Fixes: 582ac134963e ("net: stmmac: dwmac-stm32: Separate out external clock rate validation")
Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.