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rpi-config: I2C support

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With newer kernels (>=3.18) that supports device-trees I2C
should be enabled with device-trees.

This is now support by adding:
ENABLE_I2C = "1"
in local.conf

This will enable the dtparams:
i2c1
i2c_arm

Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
This commit is contained in:
Petter Mabäcker 2016-02-28 14:46:10 +01:00 committed by Andrei Gherzan
parent 6c6f6cf7b3
commit b331933938
2 changed files with 13 additions and 0 deletions
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7
README
View File

@ -27,6 +27,7 @@ Contents:
3.J. Image with Initramfs
3.K. Device tree support
3.L. Enable SPI bus
3.M. Enable I2C
4. Extra apps
4.A. omxplayer
5. Board Configuration
@ -207,6 +208,12 @@ NOTE: KERNEL_DEVICETREE is default enabled for kernel >= 3.18 and always disable
When using device tree kernels, set this variable to enable the SPI bus
ENABLE_SPI_BUS = "1"
3.M. Enable I2C
===============
When using device tree kernels, set this variable to enable I2C
ENABLE_I2C = "1"
4. Extra apps
=============

6
recipes-bsp/bootfiles/rpi-config_git.bb
View File

@ -75,6 +75,12 @@ do_deploy() {
echo "# Enable SPI bus" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
echo "dtparam=spi=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
fi
if [ -n "${ENABLE_I2C}" ]; then
echo "# Enable I2C" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
echo "dtparam=i2c1=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
echo "dtparam=i2c_arm=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
fi
}
addtask deploy before do_package after do_install