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| author | Jonathan Corbet <corbet@lwn.net> | 2023-05-04 00:47:22 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2023-06-12 14:33:40 +0200 |
| commit | e790a4ce529041bb21ec0b69a38c1b92f29df2cf (patch) | |
| tree | 56f44e5f8f8fe8d94d43a4bd7743e82e4e7889d6 /Documentation/arm/sunxi | |
| parent | Linux 6.4-rc2 (diff) | |
| download | linux-e790a4ce529041bb21ec0b69a38c1b92f29df2cf.tar.xz linux-e790a4ce529041bb21ec0b69a38c1b92f29df2cf.zip | |
arm: docs: Move Arm documentation to Documentation/arch/
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy. Move
Documentation/arm into arch/ (along with the Chinese equvalent
translations).
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Acked-by: Alexandre TORGUE <alexandre.torgue@foss.st.com>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/arm/sunxi')
| -rw-r--r-- | Documentation/arm/sunxi/clocks.rst | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/Documentation/arm/sunxi/clocks.rst b/Documentation/arm/sunxi/clocks.rst deleted file mode 100644 index 23bd03f3e21f..000000000000 --- a/Documentation/arm/sunxi/clocks.rst +++ /dev/null @@ -1,57 +0,0 @@ -======================================================= -Frequently asked questions about the sunxi clock system -======================================================= - -This document contains useful bits of information that people tend to ask -about the sunxi clock system, as well as accompanying ASCII art when adequate. - -Q: Why is the main 24MHz oscillator gatable? Wouldn't that break the - system? - -A: The 24MHz oscillator allows gating to save power. Indeed, if gated - carelessly the system would stop functioning, but with the right - steps, one can gate it and keep the system running. Consider this - simplified suspend example: - - While the system is operational, you would see something like:: - - 24MHz 32kHz - | - PLL1 - \ - \_ CPU Mux - | - [CPU] - - When you are about to suspend, you switch the CPU Mux to the 32kHz - oscillator:: - - 24Mhz 32kHz - | | - PLL1 | - / - CPU Mux _/ - | - [CPU] - - Finally you can gate the main oscillator:: - - 32kHz - | - | - / - CPU Mux _/ - | - [CPU] - -Q: Were can I learn more about the sunxi clocks? - -A: The linux-sunxi wiki contains a page documenting the clock registers, - you can find it at - - http://linux-sunxi.org/A10/CCM - - The authoritative source for information at this time is the ccmu driver - released by Allwinner, you can find it at - - https://github.com/linux-sunxi/linux-sunxi/tree/sunxi-3.0/arch/arm/mach-sun4i/clock/ccmu |