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This timer is often used on the ARM architecture, so as with so many siblings, we can implement delay timers, removing the need for the system to calibrate jiffys at boot, and potentially handling CPU frequency scaling on targets. We cannot just protect the Kconfig with a "depends on ARM" because it is already known that different architectures are using Faraday IP blocks, so it is better to make things open-ended and use Result on boot dmesg: Switching to timer-based delay loop, resolution 40n Calibrating delay loop (skipped), value calculated using timer frequency.. 50.00 BogoMIPS (lpj=250000) This is accurately the timer frequency, 250MHz on the APB bus. Cc: Andrew Jeffery <andrew@aj.id.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonas Jensen <jonas.jensen@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Jonas Jensen <jonas.jensen@gmail.com> Tested-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.