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[ Upstream commit520cf60021] Accordingly to Synopsys documentation [1] and [2], when bit PPSEN0 in register MAC_PPS_CONTROL is set it selects the functionality command in the same register, otherwise selects the functionality control. Command functionality is required to either enable (command 0x2) and disable (command 0x5) the flexible PPS output, but the bit PPSEN0 is currently set only for enabling. Set the bit PPSEN0 to properly disable flexible PPS output. Tested on STM32MP15x, based on dwmac 4.10a. [1] DWC Ethernet QoS Databook 4.10a October 2014 [2] DWC Ethernet QoS Databook 5.00a September 2017 Signed-off-by: Antonio Borneo <antonio.borneo@st.com> Fixes:9a8a02c9d4("net: stmmac: Add Flexible PPS support") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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 Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
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.