Marek Vasut [Sat, 4 Nov 2023 16:32:20 +0000 (17:32 +0100)]
arm: imx6: Enable TCP, IPv6, wget on DH i.MX6 DHCOM
Enable support for TCP protocol, wget, and IPv6 on this platform.
The former two allow users download payload into the U-Boot from
a web server, which may be more convenient or easier to set up
than TFTP server. The later is enabled to future proof the IP
stack on this platform.
Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Benjamin Szőke [Wed, 13 Dec 2023 18:51:49 +0000 (15:51 -0300)]
pico-imx7d: add baseboard SD card boot detect
Technexion PICO-IMX7 SoM is supporting USDHC3 (eMMC or micro SD on SoM)
and USDHC1 (SD on carrier board) to use on any carrier board like
PICO-NYMPH. Based on the U-Boot version from Technexion it adds
baseboard SD card boot detect to able to boot from selected USDHC1
or USDHC3 boot devices.
Signed-off-by: Benjamin Szőke <egyszeregy@freemail.hu> Tested-by: Fabio Estevam <festevam@gmail.com>
Fabio Estevam [Mon, 11 Dec 2023 13:46:17 +0000 (10:46 -0300)]
imx: imx-hab: Select SPL_DRIVERS_MISC in the SPL case
Selecting CONFIG_IMX_HAB=y on a SPL target, such as apalis_imx6_defconfig,
for example, leads to the following build error:
/usr/bin/arm-linux-gnueabihf-ld.bfd: arch/arm/mach-imx/hab.o: in function `imx_hab_is_enabled':
arch/arm/mach-imx/hab.c:879: undefined reference to `fuse_read'
fuse_read() comes from SPL_MXC_OCOTP, which depends on SPL_DRIVERS_MISC,
since commit 251a3053b1e6 ("misc: imx: remove DM dependency for ocotp
driver in SPL").
Select SPL_DRIVERS_MISC in the SPL case to fix this build issue.
Marek Vasut [Wed, 18 Oct 2023 18:51:59 +0000 (20:51 +0200)]
arm: mxs: Clear CPSR V bit to activate low vectors
The MXS starts with CPSR V bit set, which makes the CPU jump to high vectors
in case of an exception. Those high vectors are located at 0xffff0000, which
is where the BootROM exception table is located as well. U-Boot should handle
exceptions on its own using its own exception handling code, which is located
at 0x0, i.e. at low vectors. Clear the CPSR V bit, so that the CPU would jump
to low vectors on exception instead, and therefore run the U-Boot exception
handling code.
Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Hiago De Franco [Thu, 9 Nov 2023 16:24:01 +0000 (13:24 -0300)]
board: apalis/colibri imx6/imx6ull/imx7: Add fastboot bootcmd support
This commit adds support for Fastboot boot commands by checking both
CONFIG_CMD_USB_SDP and CONFIG_USB_FUNCTION_FASTBOOT. If either of these
configurations is set, it indicates that the board is in recovery mode
and can use either SDP or Fastboot.
The default option remains the SDP command, but if
CONFIG_CMD_FASTBOOT is set, it changes to 'fastboot usb 0' as
the boot command.
Signed-off-by: Hiago De Franco <hiago.franco@toradex.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Hiago De Franco [Thu, 9 Nov 2023 16:24:00 +0000 (13:24 -0300)]
apalis/colibri imx6/imx6ull/imx7: defconfig: Enable fastboot support
Add fastboot support for Apalis iMX6, Colibri iMX6, Colibri iMX6ULL and
Colibri iMX7 boards. Remove CONFIG_FASTBOOT_BUF_SIZE from
colibri_imx7_emmc_defconfig to get the default value of 0x7000000 instead
of 0x10000000, to make it consistent with the other boards.
Signed-off-by: Hiago De Franco <hiago.franco@toradex.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Arnaud Ferraris [Fri, 27 Oct 2023 13:40:45 +0000 (15:40 +0200)]
librem5: Add addresses for compressed kernel load
The "booti" command to load arm64 Linux kernels supports automatic
decompression of zipped kernel images, but relies on some environment
variables to point to usable buffer RAM.
Add those variables and let them point to some default values, that
should cover most use-cases.
Arnaud Ferraris [Fri, 27 Oct 2023 13:40:44 +0000 (15:40 +0200)]
librem5: properly set the `fdtfile` env variable
In order to use the generic "distro boot" using an extlinux.conf file,
the `fdtfile` environment variable is mandatory. This commit ensure this
variable is properly constructed based on the detected board revision.
Hugo Villeneuve [Mon, 23 Oct 2023 15:26:28 +0000 (11:26 -0400)]
MAINTAINERS: Remove non-working address from MAINTAINERS
The address ariel.dalessandro@collabora.com is no longer working:
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
ariel.dalessandro@collabora.com
host mx.collabora.co.uk [46.235.227.165]
SMTP error from remote mail server after RCPT TO:<ariel.dalessandro@collabora.com>:
550 5.1.1 <ariel.dalessandro@collabora.com>: Recipient address rejected:
undeliverable address: host mail.collabora.co.uk[46.235.227.172] said:
550 5.1.1 <ariel.dalessandro@collabora.com>: Recipient address rejected:
User unknown in local recipient table (in reply to RCPT TO command)
Remove this address from MAINTAINERS.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
Hugo Villeneuve [Thu, 19 Oct 2023 19:43:23 +0000 (15:43 -0400)]
imx8mn-var-som: Simplify FEC initialization
With DM enabled, there is no need for board code to initialize
the FEC interface.
The ethernet PHYs on the symphony carrier board have a dedicated
crystal/oscillator. If the SOM has the EC configuration option
(onboard ethernet PHY), it also has a dedicated crystal/oscillator.
So in all cases, there is no need to enable the RGMII TX clk output.
Fabio Estevam [Fri, 20 Oct 2023 00:47:35 +0000 (21:47 -0300)]
clock_imx8mm: Add a stub for imx8mp_fec_interface_init()
When CONFIG_DWC_ETH_QOS_IMX=y and CONFIG_FEC_MXC is not selected, the
following warning is seen:
arch/arm/mach-imx/imx8m/clock_imx8mm.c: In function 'board_interface_eth_init':
arch/arm/mach-imx/imx8m/clock_imx8mm.c:914:24: warning: implicit declaration of function 'imx8mp_fec_interface_init; did you mean 'imx8mp_eqos_interface_init'? [-Wimplicit-function-declaration]
Fix it by adding a stub for imx8mp_fec_interface_init() to handle this
case.
This follows the same approach done on imx8mp_eqos_interface_init().
Signed-off-by: Fabio Estevam <festevam@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
The motivation for doing this sync was a bug when doing "ums 0 mmc 1"
on imx8mm-evk. It worked well for the first time, but after doing
a CTRL+C and launching the ums again, the command did not work.
Adam Ford suggested to sync imx8mm.dtsi with the Linux dts, as there was
a recent USB power domain reorganization there.
After syncing the imx8mm.dtsi with Linux, the ums command works without
problem after a CTRL+C.
Suggested-by: Adam Ford <aford173@gmail.com> Signed-off-by: Fabio Estevam <festevam@denx.de> Acked-by: Tim Harvey <tharvey@gateworks.com>
Hugo Villeneuve [Tue, 17 Oct 2023 14:25:00 +0000 (10:25 -0400)]
imx8mn-var-som: add manufacturer to target description
Add Variscite manufacturer to the IMX8MN_VAR_SOM target menu label as
the majority of targets include the manufacturer as part of their menu
description/label and it helps when looking for a particular
manufacturer/board.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Reviewed-by: Fabio Estevam <festevam@gmail.com>
net: dwc_eth_qos: Add board_interface_eth_init() for i.MX93
Add a common board_interface_eth_init() called by the DWC MAC driver to
setup the MAC <-> PHY interface according to the PHY mode obtained from
DT.
Remove the board-side configuration in the i.MX93 EVK files.
Ricardo Salveti [Fri, 25 Aug 2023 14:44:14 +0000 (17:44 +0300)]
ARM: imx8ulp: support env in fat and ext4
Change boot device logic to also allow environment stored in fat and
in ext4 when booting from SD or eMMC.
As the boot device check for SD and for eMMC was depending on
ENV_IS_IN_MMC being defined, change the ifdef blocks at
env_get_location to use IS_ENABLED instead for all modes, returning
NOWHERE when no valid mode is found.
Marek Vasut [Sat, 29 Jul 2023 13:29:41 +0000 (15:29 +0200)]
arm: mxs: Fix ICOLL macro name typo
The interrupt collector macro name for i.MX23 is MXS_ICOLL_BASE,
this is correct and matches the documentation of both i.MX23 and
i.MX28. Align the i.MX28 macro accordingly. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Lukasz Majewski <lukma@denx.de>
Cem Tenruh [Fri, 14 Jul 2023 08:23:26 +0000 (10:23 +0200)]
arm: dts: imx8mm-phyboard-polis-rdk: Sync dts files with kernel
Sync the devicetree files used in the kernel for the imx8mm-phyboard-polis
with the corresponding devicetree files in U-Boot.
Replaced phycore-imx8mm.dts with kernel dts imx8mm-phyboard-polis-rdk.dts
Fabio Estevam [Wed, 13 Dec 2023 12:37:08 +0000 (09:37 -0300)]
imx7d-sdb: Sync devicetree with kernel 6.5-rc1
Commit 0aea5dda2928 ("ARM: dts: imx7d-sdb-u-boot: Fix usdhc1 UHS
operation") did a temporary workaround by addng the usdhc1 fix
inside the -u-boot.dtsi file.
The imx7d-sdb.dts from kernel 6.5-rc1 contains the proper UHS
fix, so sync the devicetree tree and remove the previous fix
from -u-boot.dtsi.
Also, adjust the PMIC node name inside pmic_get() to match
the devicetree update.
Gilles Talis [Wed, 13 Dec 2023 12:29:40 +0000 (09:29 -0300)]
imx: imx8mp: Add support for Polyhex Debix Model A SBC
Add support for the Polyhex Debix Model A SBC board.
It is an industrial grade single board computer based on
NXP's i.MX 8M Plus.
Currently supported interfaces are:
- Serial console
- Micro SD
- eQOS and FEC Ethernet
imx8mp-debix-model-a.dts is taken from Linux 6.3.
Signed-off-by: Gilles Talis <gilles.talis@gmail.com> Reviewed-by: Peng Fan <peng.fan@nxp.com>
Shawn Guo [Mon, 2 Jan 2023 12:20:34 +0000 (20:20 +0800)]
ddr: imx: Save the FW loading if it hasn't changed
Function ddr_load_train_firmware() is called 4 times in a loop by
ddr_cfg_phy(). The first 3 calls are all '1D' type and just loading the
same FWs. Let's add a type check and save 2 of them. This helps to
reduce DDRPHY training time from 269 ms down to 212 ms, and thus speed
up boot time ~ 50 ms.
Marek Vasut [Sat, 7 Oct 2023 21:41:03 +0000 (23:41 +0200)]
test: bdinfo: Test both bdinfo and bdinfo -a
Factor out the core of test for all bdinfo output into bdinfo_test_all()
and then reuse it to verify that both 'bdinfo' and 'bdinfo -a' print all
the bdinfo output.
Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Marek Vasut [Sat, 7 Oct 2023 21:40:58 +0000 (23:40 +0200)]
cmd: bdinfo: Optionally use getopt and implement bdinfo -a
Add optional support for getopt() and in case this is enabled via
GETOPT configuration option, implement support for 'bdinfo -a'.
The 'bdinfo -a' behaves exactly like bdinfo and prints 'all' the
bdinfo information. This is implemented in preparation for other
more fine-grained options.
Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Chanho Park [Sun, 3 Dec 2023 08:30:40 +0000 (17:30 +0900)]
watchdog: Correct watchdog timeout print message
The wdt_start function takes timeout_ms as a parameter and starts the
watchdog with this value. However, when you output the message, it shows
the default timeout value for the watchdog device.
So this patch fixes that part to output the correct timeout value.
Before -->
StarFive # wdt start 3000
WDT: Started watchdog@13070000 without servicing (60s timeout)
After -->
StarFive # wdt start 3000
WDT: Started watchdog@13070000 without servicing (3s timeout)
Fixes: c2fd0ca1a822 ("watchdog: Integrate watchdog triggering into the cyclic framework") Signed-off-by: Chanho Park <chanho61.park@samsung.com> Reviewed-by: Stefan Roese <sr@denx.de>
Cong Dang [Mon, 19 Jun 2023 22:41:50 +0000 (00:41 +0200)]
ARM: dts: renesas: Disable RPC driver on R8A779G0 V4H White Hawk board
As requirement of CR side, QSPI Flash usage via RPC driver shall
be disabled and leaving the control of this module to CR side.
Perform DT modification to disable the RPC SPI.
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Signed-off-by: Cong Dang <cong.dang.xn@renesas.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
[Marek: Do not modify defconfig, modify the DT instead, this way
the RPC SPI can be enabled without recompiling the U-Boot
itself. Update commit message accordingly.]
Use the phandle reference to &rpc node in arch/arm/dts/r8a779g0.dtsi
and remove properties which are already in arch/arm/dts/r8a779g0.dtsi.
No functional change and no resulting DT change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Compiling with CONFIG_USB_XHCI_PCI and CONFIG_PCI=n results in
usb/host/xhci-pci.c:48:(.text.xhci_pci_probe+0x44):
undefined reference to `dm_pci_write_config32
Add the missing Kconfig dependency.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Mark Kettenis <kettenis@openbsd.org> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 07:23:30 +0000 (16:23 +0900)]
usb: storage: Use the correct CBW lengths
USB UFI uses fixed 12-byte commands (as does RBC, which is not
supported), but SCSI does not have this limitation. Use the correct
command block lengths depending on the subclass.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 06:37:43 +0000 (15:37 +0900)]
usb: xhci: Do not panic on event timeouts
Now that we always check the return value, just return NULL on timeouts.
We can still log the error since this is a problem, but it's not reason
to panic.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 06:37:41 +0000 (15:37 +0900)]
usb: xhci: Recover from halted bulk endpoints
There is currently no codepath to recover from this case. In principle
we could require that the upper layer do this explicitly, but let's just
do it in xHCI when the next bulk transfer is started, since that
reasonably implies whatever caused the problem has been dealt with.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 06:37:40 +0000 (15:37 +0900)]
usb: xhci: Allow context state errors when halting an endpoint
There is a race where an endpoint may halt by itself while we are trying
to halt it, which results in a context state error. See xHCI 4.6.9 which
mentions this case.
This also avoids BUGging when we attempt to stop an endpoint which was
already stopped to begin with, which is probably a bug elsewhere but
not a good reason to crash.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 06:37:39 +0000 (15:37 +0900)]
usb: xhci: Better error handling in abort_td()
If the xHC has a problem with our STOP ENDPOINT command, it is likely to
return a completion directly instead of first a transfer event for the
in-progress transfer. Handle that more gracefully.
We still BUG() on the error code, but at least we don't end up timing
out on the event and ending up with unexpected event errors.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Hector Martin [Sun, 29 Oct 2023 06:37:38 +0000 (15:37 +0900)]
usb: xhci: Guard all calls to xhci_wait_for_event
xhci_wait_for_event returns NULL on timeout, so the caller always has to
check for that. This addresses immediate explosions in this part
of the code when timeouts happen, but not the root cause for the
timeout.
Signed-off-by: Hector Martin <marcan@marcan.st> Reviewed-by: Marek Vasut <marex@denx.de>
Christophe Leroy [Wed, 15 Nov 2023 18:36:36 +0000 (19:36 +0100)]
Fix stack-protector for powerpc
On powerpc, stack protector expects a function called
__stack_chk_fail_local() instead of __stack_chk_fail()
And some versions of GCC for powerpc default to TLS canary
instead of global canary, so always force GCC to use global
canary with -mstack-protector-guard=global
Cc: Joel Peshkin <joel.peshkin@broadcom.com> Fixes: 4e9bce12432 ("Add support for stack-protector") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
AKASHI Takahiro [Wed, 15 Nov 2023 01:53:45 +0000 (10:53 +0900)]
xen: pvblock: fix the maximum io size in one operation
The current implementation may cause BUG_ON() in blkfront_aio()
BUG_ON(n > BLKIF_MAX_SEGMENTS_PER_REQUEST);
In pvblock_iop(), a read/write operation will be split into smaller
chunks of data so that the size in one access (aio_nbytes) is limited
to, at the maximum,
BLKIF_MAX_SEGMENTS_PER_REQUEST * PAGE_SIZE
But this works only if when the *buffer* passed in to pvblock_io()
is page-aligned. If not, the given data region may stand across
(BLKIF_MAX_SEGMENTS_PER_REQUEST + 1) pages. See the logic in
blkfront_aio():
start = (uintptr_t)aiocbp->aio_buf & PAGE_MASK;
end = ((uintptr_t)aiocbp->aio_buf + aiocbp->aio_nbytes +
PAGE_SIZE - 1) & PAGE_MASK;
Then this will lead to BUG_ON() above.
This can be fixed by decreasing the maximum size of aio_nbytes.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Fixes: commit 3a739cc6c948 ("xen: pvblock: Implement front-back protocol and do IO")
Alex Bee [Tue, 14 Nov 2023 21:11:27 +0000 (22:11 +0100)]
timer-uclass: Always use "clock-frequency" property as fallback
Currently the "clock-frequency" DT property is only being considered as an
fallback if either there is no clock driver, the clock driver implements
the request-op correctly or there is no clock defined for the timer at all.
This patch makes "clock-frequency" also being picked as a fallback if
getting the clock-rate fails, since clk_get(_by_index) will return no
error, if a clock driver does not implement the request-op and does also
not support getting the rate of the clock in question.
timer_post_probe will take care if the property does not exist in the DT or
is defined as 0.
Tom Rini [Wed, 29 Nov 2023 03:31:09 +0000 (22:31 -0500)]
Merge patch series "cmd: add scmi command"
To quote the author:
"Scmi" command will be re-introduced per Michal's request.
The functionality is the same as I put it in my patch set of adding
SCMI base protocol support, but made some tweak to make UT, "ut dm
scmi_cmd," more flexible and tolerable when enabling/disabling a specific
SCMI protocol for test purpose.
Each commit may have some change history inherited from the preceding
patch series.
Test
====
The patch series was tested on the following platforms:
* sandbox
AKASHI Takahiro [Tue, 14 Nov 2023 02:14:28 +0000 (11:14 +0900)]
test: dm: add scmi command test
In this test, "scmi" command is tested against different sub-commands.
Please note that scmi command is for debug purpose and is not intended
in production system.
AKASHI Takahiro [Tue, 14 Nov 2023 02:14:26 +0000 (11:14 +0900)]
cmd: add scmi command for SCMI firmware
This command, "scmi", may provide a command line interface to various SCMI
protocols. It supports at least initially SCMI base protocol and is
intended mainly for debug purpose.
AKASHI Takahiro [Tue, 14 Nov 2023 02:14:24 +0000 (11:14 +0900)]
test: dm: skip scmi tests against disabled protocols
This is a precautionary change to make scmi tests workable whether or not
a specific protocol be enabled. If a given protocol is not configured,
we skip the test by returning -EAGAIN.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
Tom Rini [Wed, 29 Nov 2023 01:10:36 +0000 (20:10 -0500)]
Merge patch series "fs: fat: calculate FAT type based on cluster count"
To quote the author:
This series fixes an issue where the FAT type (FAT12, FAT16) is not
correctly detected, e.g. when the BPB field BS_FilSysType contains the
valid value "FAT ".
This issue occures, for example, if a partition is formatted by
swupdate using its diskformat handler. swupdate uses the FAT library
from http://elm-chan.org/fsw/ff/ internally.
See https://groups.google.com/g/swupdate/c/7Yc3NupjXx8 for a
discussion in the swupdate mailing list.
Please refer to the commit messages for more details.
1. Added bootsector checks
Most tests from https://www.win.tue.nl/~aeb/linux/fs/fat/fat-2.html
are added in the commit 'fs: fat: add bootsector validity check'.
Only the tests VIII, IX and X are not implemented.
I also checked the Linux kernel code (v6.6) and did not find any
checks on 'vistart->fs_type'. This is the reason why is skipped them
here.
See section '2. Size comparisons' for the impact on the binary size.
2. Size comparisons
I executed bloat-o-meter from the Linux kernel for an arm64
target (config xilinx_zynqmp_mini_emmc0_defconfig):
Comparison of the binary spl/u-boot-spl between master (rev e17d174773e9ba9447596708e702b7382e47a6cf) and this patch
series (including the added validity checks of the boot sector):
add/remove: 0/0 grow/shrink: 1/1 up/down: 100/-12 (88)
Function old new delta
read_bootsectandvi 308 408 +100
fat_itr_root 444 432 -12
Total: Before=67977, After=68065, chg +0.13%
When compare the size of the binary spl/u-boot-spl between master this
series without the the validity checks of the boot sector:
add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-24 (-24)
Function old new delta
read_bootsectandvi 308 296 -12
fat_itr_root 444 432 -12
Total: Before=67977, After=67953, chg -0.04%
So the size of the spl on this arm64 target increases by 88 bytes for
this series. When i remove the validity check the size decreases by 24 bytes.
Without this commit it is only possible to create filesystem images
with a size granularity of 1MB.
This commit adds the option to create file systems with different
sizes, e.g 8.5MB.
Signed-off-by: Christian Taedcke <christian.taedcke@weidmueller.com>
The tests fs_ext, fs_mkdir and fs_unlink support fat12 without
modifications.
The fs_basic test uses a partition that is too large for fat12, so it
is omitted here.
Signed-off-by: Christian Taedcke <christian.taedcke@weidmueller.com>
fs: fat: calculate FAT type based on cluster count
This fixes an issue where the FAT type (FAT12, FAT16) is not
correctly detected, e.g. when the BPB field BS_FilSysType contains the
valid value "FAT ".
According to the FAT spec the field BS_FilSysType has only
informational character and does not determine the FAT type.
The logic of this code is based on the linux kernel implementation
from the file fs/fat/inode.c function fat_fill_super().
For details about FAT see http://elm-chan.org/docs/fat_e.html
Signed-off-by: Christian Taedcke <christian.taedcke@weidmueller.com>