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For some reason Broadcom decided that BCM53101 uses 0.5s increments for the ageing time register, but kept the field width the same [1]. Due to this, the actual ageing time was always half of what was configured. Fix this by adapting the limits and value calculation for BCM53101. So far it looks like this is the only chip with the increased tick speed: $ grep -l -r "Specifies the aging time in 0.5 seconds" cdk/PKG/chip | sort cdk/PKG/chip/bcm53101/bcm53101_a0_defs.h $ grep -l -r "Specifies the aging time in seconds" cdk/PKG/chip | sort cdk/PKG/chip/bcm53010/bcm53010_a0_defs.h cdk/PKG/chip/bcm53020/bcm53020_a0_defs.h cdk/PKG/chip/bcm53084/bcm53084_a0_defs.h cdk/PKG/chip/bcm53115/bcm53115_a0_defs.h cdk/PKG/chip/bcm53118/bcm53118_a0_defs.h cdk/PKG/chip/bcm53125/bcm53125_a0_defs.h cdk/PKG/chip/bcm53128/bcm53128_a0_defs.h cdk/PKG/chip/bcm53134/bcm53134_a0_defs.h cdk/PKG/chip/bcm53242/bcm53242_a0_defs.h cdk/PKG/chip/bcm53262/bcm53262_a0_defs.h cdk/PKG/chip/bcm53280/bcm53280_a0_defs.h cdk/PKG/chip/bcm53280/bcm53280_b0_defs.h cdk/PKG/chip/bcm53600/bcm53600_a0_defs.h cdk/PKG/chip/bcm89500/bcm89500_a0_defs.h [1]a5d3fc9b12/cdk/PKG/chip/bcm53101/bcm53101_a0_defs.h (L28966)Fixes:e39d14a760("net: dsa: b53: implement setting ageing time") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://patch.msgid.link/20250905124507.59186-1-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski <kuba@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 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.