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oe-selftest: add new ext dtb recipe

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There is no test coverage for the devicetree.bbclass class. Add a
minimalist recipe that uses this class.
This recipe compiles a devicetree overlay that does not include any
sources from the kernel build folder to keep it simple and also usable
for testing a kernel from the sstate-cache.

(From OE-Core rev: 44b6eaf9fb408f2a7941e7ba8f2156cf2c7d4bae)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Adrian Freihofer 2025-06-03 10:23:13 +02:00 committed by Richard Purdie
parent 437043d9f3
commit c6a51f8c99
3 changed files with 92 additions and 0 deletions
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29
meta-selftest/recipes-test/ext-dtb/bbb-dtbs-as-ext.bb Normal file
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SUMMARY = "Boeaglebone Devicetrees"
DESCRIPTION = "Handle the dtc files of the beaglebone-yocto via devicetree.bbclass just for testing purpose"
SECTION = "kernel"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
inherit devicetree
COMPATIBLE_MACHINE = "^(beaglebone-yocto)$"
# Take a copy of a small devicetree from the kernel's source directory for handling it externally
# Borrowed an example DTB overlay from
# https://raw.githubusercontent.com/beagleboard/linux/refs/heads/5.10/arch/arm/boot/dts/overlays/BBORG_RELAY-00A2.dts
SRC_URI = "\
file://am335x-bonegreen-ext.dts \
file://BBORG_RELAY-00A2.dts \
"
# The am335x-bonegreen-ext.dts needs also the ti directories
DT_INCLUDE:append = " ${STAGING_KERNEL_DIR}/arch/${ARCH}/boot/dts/ti/omap"
# Sym-links are handled as extra configuration nodes in FIT images.
do_install:append() {
ln -sf am335x-bonegreen-ext.dtb "${D}/boot/devicetree/am335x-bonegreen-ext-alias.dtb"
}
do_deploy:append() {
ln -sf am335x-bonegreen-ext.dtb "${DEPLOYDIR}/devicetree/am335x-bonegreen-ext-alias.dtb"
}

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meta-selftest/recipes-test/ext-dtb/files/BBORG_RELAY-00A2.dts Normal file
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Robert Nelson <robertcnelson@gmail.com>
* Copyright (C) 2019 Amilcar Lucas <amilcar.lucas@iav.de>
*/
/dts-v1/;
/plugin/;
&{/chosen} {
overlays {
BBORG_RELAY-00A2.kernel = __TIMESTAMP__;
};
};
&ocp {
P9_41_pinmux { pinctrl-0 = <&P9_41_gpio_pin>;};
P9_42_pinmux { pinctrl-0 = <&P9_42_gpio_pin>;};
P9_30_pinmux { pinctrl-0 = <&P9_30_gpio_pin>;};
P9_27_pinmux { pinctrl-0 = <&P9_27_gpio_pin>;};
};
// relay1
&bone_led_P9_41 {
status = "okay";
label = "relay1";
default-state = "keep";
};
// relay2
&bone_led_P9_42 {
status = "okay";
label = "relay2";
default-state = "keep";
};
// realy3
&bone_led_P9_30 {
status = "okay";
label = "relay3";
default-state = "keep";
};
// realy4
&bone_led_P9_27 {
status = "okay";
label = "relay4";
default-state = "keep";
};

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meta-selftest/recipes-test/ext-dtb/files/am335x-bonegreen-ext.dts Normal file
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
*/
/dts-v1/;
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
#include "am335x-bonegreen-common.dtsi"
/ {
model = "TI AM335x BeagleBone Green External";
compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
};