a52bdee13e
Use correct clocks properties for the AD7124 family of ADCs. These ADCs have an internal clock along with an optional external clock that can be connected to the CLK pin. This pin can be wired up 3 ways: 1. Not connected - the internal clock is used. 2. Connected to an external clock (input) - the external clock is used. 3. Connected to the CLK pin on another ADC (output) - the internal clock is used on one and the other is configured for an external clock. The new bindings describe these 3 cases by picking one of the following: 1. Omit both clocks and #clock-cells properties. 2. Include only the clocks property with a phandle to the external clock. 3. Include only the #clock-cells property on the ADC providing the output. The clock-names property is now deprecated and should not be used. The MCLK signal that it refers to is an internal counter in the ADC and therefore does not make sense as a devicetree property as it can't be connected to anything external to the ADC. Since there is only one possible external clock, the clock-names property is not needed anyway. Based on the implementation of the Linux driver, it looks like the "mclk" clock was basically being used as a control to select the power mode of the ADC, which is not something that should be done in the devicetree. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://patch.msgid.link/20250828-iio-adc-ad7124-proper-clock-support-v3-1-0b317b4605e5@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> |
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| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.