<font size=2 face="sans-serif">Hej</font>
<br>
<br><font size=2 face="sans-serif">It's friday and I have some time to
play a bit around. I like to build a simple test-adapter using a RPi. I
want to connect some of the 40GPIO pins with a custom mainboard. For that
I like to define the pin behaviour by an own dts file.</font>
<br>
<br><font size=2 face="sans-serif">I created my own dts file (testboard.dts)
+ a simple patch for "arch/arm/boot/dts/Makefile" to add the
file.</font>
<br>
<br><font size=2 face="sans-serif">For adding them into the build-process
I am append the kernel build (linux-raspberrypi%.bbappend).</font>
<br>
<br><font size=2 face="sans-serif">Now I have problems bringing them together,
because the name of the git/source links changes (git -> </font><font size=2 color=blue face="sans-serif">linux-raspberrypi2-standard-build/source</font><font size=2 face="sans-serif">
). Maybe some one has an idea?</font>
<br>
<br><font size=2 face="sans-serif">I put the listings of the files below:</font>
<br>
<br><font size=2 face="sans-serif">########## linux-raspberrypi%.bbappend
##########</font>
<br><font size=2 face="sans-serif">FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"</font>
<br>
<br><font size=2 face="sans-serif">SRC_URI += "</font><a href="file://rpi-fencing.dts;subdir=linux-raspberrypi2-standard-build/arch/arm/boot/dts"><font size=2 color=blue face="sans-serif">file://</font><font size=2 face="sans-serif">testboard</font><font size=2 color=blue face="sans-serif">.dts;subdir=linux-raspberrypi2-standard-build/source/arch/arm/boot/dts</font></a><font size=2 face="sans-serif">
\</font>
<br><font size=2 face="sans-serif"> </font><a href="file://0001-add-rpi-fencing-to-makefile.patch/"><font size=2 color=blue face="sans-serif">file://0001-add-</font><font size=2 face="sans-serif">testboard</font><font size=2 color=blue face="sans-serif">-to-makefile.patch</font></a><font size=2 face="sans-serif">
\</font>
<br><font size=2 face="sans-serif"> "</font>
<br><font size=2 face="sans-serif">PACKAGE_ARCH = "raspberrypi2"</font>
<br>
<br><font size=2 face="sans-serif">KERNEL_DEVICETREE += "testboard.dtb"</font>
<br><font size=2 face="sans-serif">#############################################</font>
<br>
<br><font size=2 face="sans-serif">########## </font><font size=2 color=blue face="sans-serif">0001-add-</font><font size=2 face="sans-serif">testboard</font><font size=2 color=blue face="sans-serif">-to-makefile.patch</font><font size=2 face="sans-serif">
##########</font>
<br><font size=2 face="sans-serif">--- a/arch/arm/boot/dts/Makefile</font>
<br><font size=2 face="sans-serif">+++ b/arch/arm/boot/dts/Makefile</font>
<br>
<br><font size=2 face="sans-serif">@@ -1,4 +1,8 @@</font>
<br><font size=2 face="sans-serif"> ifeq ($(CONFIG_OF),y)</font>
<br><font size=2 face="sans-serif">+</font>
<br><font size=2 face="sans-serif">+# my own dts files</font>
<br><font size=2 face="sans-serif">+dtb-$(CONFIG_ARCH_BCM2835) += \</font>
<br><font size=2 face="sans-serif">+ testboard.dts</font>
<br><font size=2 face="sans-serif"> </font>
<br><font size=2 face="sans-serif"> dtb-$(CONFIG_ARCH_BCM2835) +=
\</font>
<br><font size=2 face="sans-serif"> bcm2708-rpi-b.dtb
\</font>
<br><font size=2 face="sans-serif">#############################################</font>
<br>
<br><font size=2 face="sans-serif">########## testboard.dts ##########</font>
<br><font size=2 face="sans-serif">/dts-v1/;</font>
<br><font size=2 face="sans-serif">#include "bcm2836.dtsi"</font>
<br><font size=2 face="sans-serif">#include "bcm2835-rpi.dtsi"</font>
<br><font size=2 face="sans-serif">#include "bcm283x-rpi-smsc9514.dtsi"</font>
<br><font size=2 face="sans-serif">#include "bcm283x-rpi-usb-host.dtsi"</font>
<br>
<br><font size=2 face="sans-serif">/ {</font>
<br><font size=2 face="sans-serif"> compatible
= "raspberrypi,2-model-b", "brcm,bcm2836";</font>
<br><font size=2 face="sans-serif"> model
= "RPi test";</font>
<br>
<br><font size=2 face="sans-serif"> memory
{</font>
<br><font size=2 face="sans-serif">
reg = <0 0x40000000>;</font>
<br><font size=2 face="sans-serif"> };</font>
<br>
<br><font size=2 face="sans-serif"> leds
{</font>
<br><font size=2 face="sans-serif">
act {</font>
<br><font size=2 face="sans-serif">
gpios
= <&gpio 47 0>;</font>
<br><font size=2 face="sans-serif">
};</font>
<br>
<br><font size=2 face="sans-serif">
pwr {</font>
<br><font size=2 face="sans-serif">
label
= "PWR";</font>
<br><font size=2 face="sans-serif">
gpios
= <&gpio 35 0>;</font>
<br><font size=2 face="sans-serif">
default-state
= "keep";</font>
<br><font size=2 face="sans-serif">
linux,default-trigger
= "default-on";</font>
<br><font size=2 face="sans-serif">
};</font>
<br><font size=2 face="sans-serif"> };</font>
<br>
<br><font size=2 face="sans-serif">};</font>
<br>
<br><font size=2 face="sans-serif">&gpio {</font>
<br><font size=2 face="sans-serif"> pinctrl-0
= <&gpioout &alt0 &i2s_alt0>;</font>
<br>
<br><font size=2 face="sans-serif"> /*
I2S interface */</font>
<br><font size=2 face="sans-serif"> i2s_alt0:
i2s_alt0 {</font>
<br><font size=2 face="sans-serif">
brcm,pins = <18 19 20 21>;</font>
<br><font size=2 face="sans-serif">
brcm,function = <BCM2835_FSEL_ALT0>;</font>
<br><font size=2 face="sans-serif">
status = "disabled";</font>
<br><font size=2 face="sans-serif"> };</font>
<br>
<br><font size=2 face="sans-serif"> cord0:
cord0 {</font>
<br><font size=2 face="sans-serif">
brcm,pins = <5 6 25>;</font>
<br><font size=2 face="sans-serif">
brcm,function = <BCM2835_FSEL_ALT2>;</font>
<br><font size=2 face="sans-serif">
status = "okay";</font>
<br><font size=2 face="sans-serif"> };</font>
<br>
<br><font size=2 face="sans-serif">};</font>
<br>
<br><font size=2 face="sans-serif">&hdmi {</font>
<br><font size=2 face="sans-serif"> hpd-gpios
= <&gpio 46 GPIO_ACTIVE_LOW>;</font>
<br><font size=2 face="sans-serif"> status
= "disabled";</font>
<br><font size=2 face="sans-serif">};</font>
<br><font size=2 face="sans-serif">#############################################</font>
<br>
<br><font size=2 face="sans-serif">For that I put a question on stackoverflow:<br>
</font><a href="https://stackoverflow.com/questions/44702426/how-to-setup-an-own-device-tree-for-a-raspberrypi-in-yocto"><font size=2 color=blue face="sans-serif">https://stackoverflow.com/questions/44702426/how-to-setup-an-own-device-tree-for-a-raspberrypi-in-yocto</font></a>
<br>
<br><font size=2 face="sans-serif">Regards form Germany!</font>
<br><font size=2 face="sans-serif"><br>
Stefan<br>
<br>
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