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cce2200dac
I do not know the controller enough to really understand what is happening under the hood, but most of the supported IPs just disable direct access without explicit reason. In practice we observe a significant speed improvement when using indirect mode, some kind of direct mapping, instead of DAC, Direct ACcess. Add the relevant quirk for all boards with the same defaults as AM654 to use INDAC (INDirect ACcess) instead. Speed tests show no change on the write speed on a SPI NAND chip clocked at 25MHz on the AM62A LP SK, but a read speed jumping from 3500kiB/s up to more than 10000kiB/s (approximately x3). Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://patch.msgid.link/20250305200933.2512925-3-miquel.raynal@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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 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.