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Accessing non-existent PMU registers causes an SError, halting the system. regmap can help us with that by allowing to pass the list of valid registers as part of the config during creation. When this driver creates a new regmap itself rather than relying on syscon_node_to_regmap(), it's therefore easily possible to hook in custom access tables for valid read and write registers. Specifying access tables avoids SErrors for invalid registers and instead the regmap core can just return an error. Outside drivers, this is also helpful when using debugfs to access the regmap. Make it possible for drivers to specify read and write tables to be used on creation of the secure regmap by adding respective fields to struct exynos_pmu_data. Also add kerneldoc to same struct while updating it. Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org> Signed-off-by: André Draszik <andre.draszik@linaro.org> Link: https://patch.msgid.link/20251009-gs101-pmu-regmap-tables-v2-1-2d64f5261952@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.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.