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50433f6eea
PCIe link configurations such as 8GT/s x2 and 16GT/s x1 may operate at the same frequency, but differ in other characteristics like RPMh votes. But the existing OPP selection which is solely based on frequency (the 'opp-hz' DT property) cannot distinguish between such cases. Hence, use the newly introduced dev_pm_opp_find_key_exact() API to match both frequency and level (the 'opp-level' property) when selecting an OPP, here level indicates PCIe data rate. To support older device trees where opp-level is not defined, check if opp-level is present or not using dev_pm_opp_find_level_exact(). If not present fallback to frequency only match. Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> [mani: zero initialize dev_pm_opp_key struct] Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> [bhelgaas: add 'opp-hz' and 'opp-level' in commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/20251013-opp_pcie-v5-5-eb64db2b4bd3@oss.qualcomm.com |
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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.