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67 lines
1.2 KiB
Groff
67 lines
1.2 KiB
Groff
.TH DTPARAM 1
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.
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.SH NAME
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dtparam \- manipulate parameters of the base device-tree
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.
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.
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.SH SYNOPSIS
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.SY dtparam
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.RI [ param=val \|.\|.\|.]
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.YS
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.
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.SY dtparam
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.B \-h
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.RI [ param ]
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.YS
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.
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.
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.SH DESCRIPTION
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.B dtparam
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is a command line utility for manipulating the base device-tree's parameters.
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For example, it can be used to enable the SPI or I2C interfaces at runtime
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without rebooting.
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If
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.B dtparam
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is run without any argument, it prints the names of all base device-tree
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parameters and their description.
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.
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.
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.SH OPTIONS
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.
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.TP
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.BR \-h " [\fIparam\fR]"
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If given without
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.I param
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displays help on the application overall. If
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.I param
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is specified, prints help about that parameter in the base device-tree.
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.
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.
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.SH EXAMPLES
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.
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.TP
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.B sudo dtparam spi=on
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Enable the SPI interface on the GPIO header. Note that root privileges are
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usually required for manipulating the base device-tree (hence, sudo in the
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example).
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.
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.TP
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.B dtparam -h spi
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Print help about the "spi" parameter.
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.
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.TP
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.B sudo dtparam audio=off
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Disable the audio output.
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.
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.
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.SH SEE ALSO
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.BR dtoverlay (1),
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.BR dtmerge (1),
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.B [DTREE]
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.
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.
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.SH REFERENCES
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.TP
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.B [DTREE]
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https://www.raspberrypi.org/documentation/configuration/device-tree.md
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