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Device Tree/en: различия между версиями
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<languages/> | <languages/> | ||
Device Tree | Device Tree - hardware configuration description files. They are used by Linux and hence the Wiren Board. | ||
Modification of Device Tree files may be required when reassigning ports, connecting some UEXT devices, when connecting 1-wire sensors, etc. | |||
Read more about Device Tree: https://en.wikipedia.org/wiki/Device_tree , http://elinux.org/Device_Tree | Read more about Device Tree: https://en.wikipedia.org/wiki/Device_tree , http://elinux.org/Device_Tree | ||
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Device Tree files are written in .dts text format, which is compiled into dtb binary format | Device Tree files are written in .dts text format, which is compiled into dtb binary format | ||
== Loading == | == Loading == | ||
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The dtb file is located in /boot/dtbs/imx23-wirenboard28.dtb (for Wiren Board rev. 2.8), at /boot/dtbs/imx23-wirenboard32.dtb (for Wiren Board Smart Home rev. 3.5) | The dtb file is located in /boot/dtbs/imx23-wirenboard28.dtb (for Wiren Board rev. 2.8), at /boot/dtbs/imx23-wirenboard32.dtb (for Wiren Board Smart Home rev. 3.5) | ||
== Reassembly == | == Reassembly == | ||
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Another way is to build the kernel:[[Special:MyLanguage/Сборка ядра|Сборка ядра]] | Another way is to build the kernel:[[Special:MyLanguage/Сборка ядра|Сборка ядра]] | ||
===Download=== | ===Download=== | ||
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imx23-wirenboard28.dts for Wiren Board rev. 2.8 | imx23-wirenboard28.dts for Wiren Board rev. 2.8 | ||
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$ #export WB_BRANCH=v3.12-rc3-imxv5-x0.3 # for kernel 3.12 | $ #export WB_BRANCH=v3.12-rc3-imxv5-x0.3 # for kernel 3.12 | ||
$ export WB_BRANCH=v3.13-imxv5-x0.1 | $ export WB_BRANCH=v3.13-imxv5-x0.1 | ||
$ wget https://raw.github.com/contactless/linux/$WB_BRANCH/arch/arm/boot/dts/mxs-pinfunc.h | $ wget https://raw.github.com/contactless/linux/$WB_BRANCH/arch/arm/boot/dts/mxs-pinfunc.h | ||
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imx23.dtsi imx23-wirenboard28.dts skeleton.dtsi | imx23.dtsi imx23-wirenboard28.dts skeleton.dtsi | ||
imx23-pinfunc.h mxs-pinfunc.h | imx23-pinfunc.h mxs-pinfunc.h | ||
</pre> | </pre> | ||
===Compiler=== | ===Compiler=== | ||
The Device Tree compiler in Ubuntu and Debian is in the device-tree-compiler package. Install it: | |||
<pre> | <pre> | ||
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</pre> | </pre> | ||
gcc is also required | |||
<pre> | <pre> | ||
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</pre> | </pre> | ||
===Compilation=== | |||
=== | |||
<pre> | <pre> | ||
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</pre> | </pre> | ||
===Installation=== | |||
The compiled file must be written to /boot/dtsb. <b>Be sure to make a backup of the existing / boot/dtsb file!</b> | |||
<b> | |||