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Accordingly to Cadence documentation, PHY write procedure is: 1. Software sets the PHY Register Address (HRS04[5:0]) and the PHY Write Data (HRS04[15:8]) fields. 2. Software sets the PHY Write Transaction Request (HRS04[24]) field to 1. 3. Software waits as the PHY Write Transaction Acknowledge (HRS04[26]) field is equal to 0. 4. Hardware performs the write transaction to PHY register where HRS04[15:8] is a data written to register under HRS04[5:0] address. 5. Hardware sets the PHY Transaction Acknowledge (HRS04[26]) to 1 when transaction is completed. 6. Software clears the PHY Write Transaction Request (HRS04[24]) to 1 after noticing that the PHY Write Transaction Acknowledge (HRS04[26]) field is equal to 1. 7. Software waits for the PHY Acknowledge Register (HRS04[26]) field is equal to 0. Add missing steps 3 and 7. Lack of these steps causes integrity errors detested by hardware. Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@intel.com> Link: https://lore.kernel.org/r/20200525074053.7309-1-vladimir.kondratiev@intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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| README | ||
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.
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.