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2023-10-16Merge tag 'u-boot-amlogic-20231015' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-amlogic - add Amlogic A1 clock driver - add Amlogic A1 reset support - add USB Device support for Amlogic A1 - enable RNG on Amlogic A1 & Amlogic S4 - move Amlogic Secure Monitor to standalone driver
2023-10-15arch: meson: use secure monitor driverAlexey Romanov
Now we have to use UCLASS_SM driver instead of raw smc_call() function call. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-9-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15arch: meson: sm: set correct order of the includesAlexey Romanov
The common.h header should always be first, followed by other headers in order, then headers with directories, then local files. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-8-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15drivers: introduce Meson Secure Monitor driverAlexey Romanov
This patch adds an implementation of the Meson Secure Monitor driver based on UCLASS_SM. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-7-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15sandbox: defconfig: enable CONFIG_SM optionAlexey Romanov
We use this option to test UCLASS_SM. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-6-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15sandbox: add tests for UCLASS_SMAlexey Romanov
This patchs adds simple tests for Secure Monitor uclass. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-5-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15sandbox: dts: add meson secure monitor nodeAlexey Romanov
We need this to test UCLASS_SM. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-4-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15sandbox: add sandbox sm uclass driverAlexey Romanov
This patch adds sandbox secure monitor driver. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-3-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-15drivers: introduce Secure Monitor uclassAlexey Romanov
At the moment, we don't have a common API for working with SM, only the smc_call() function. This approach is not generic and difficult to configure and maintain. This patch adds UCLASS_SM with the generic API: - sm_call() - sm_call_write() - sm_call_read() These functions operate with struct pt_regs, which describes Secure Monitor arguments. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230921081346.22157-2-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-14Merge tag 'dm-pull-13oct23' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-dm improvements with dev_read_addr_..._ptr() scan all entries in multi-device boot_targets EFI empty-capsule support
2023-10-14Merge branch '2023-10-13-firmware-scmi-updates'Tom Rini
- Fix a memset call in the optee_agent code. Then to quote the author for the rest of the changes: This patch series allows users to access SCMI base protocol provided by SCMI server (platform). See SCMI specification document v3.2 beta[1] for more details about SCMI base protocol. What is currently not implemented is - SCMI_BASE_NOTIFY_ERRORS command and notification callback mechanism This feature won't be very useful in the current U-Boot environment. [1] https://developer.arm.com/documentation/den0056/e/?lang=en
2023-10-13firmware: scmi: Fix clearing variableFrancois Berder
The sess variable in open_channel was not entirely cleared to zero at the start of this function. This commit ensures that the entire struct is cleared. Signed-off-by: Francois Berder <fberder@outlook.fr>
2023-10-13firmware: scmi: add a check against availability of protocolsAKASHI Takahiro
Now that we have Base protocol support, we will be able to check if a given protocol is really supported by the SCMI server (firmware). Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13test: dm: add SCMI base protocol testAKASHI Takahiro
Added is a new unit test for SCMI base protocol, which will exercise all the commands provided by the protocol, except SCMI_BASE_NOTIFY_ERRORS. $ ut dm scmi_base It is assumed that test.dtb is used as sandbox's device tree. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13sandbox: remove SCMI base node definition from test.dtsAKASHI Takahiro
SCMI base protocol is mandatory and doesn't need to be listed in a device tree. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: install base protocol to SCMI agentAKASHI Takahiro
SCMI base protocol is mandatory, and once SCMI node is found in a device tree, the protocol handle (udevice) is unconditionally installed to the agent. Then basic information will be retrieved from SCMI server via the protocol and saved into the agent instance's local storage. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13test: dm: simplify SCMI unit test on sandboxAKASHI Takahiro
Adding SCMI base protocol makes it inconvenient to hold the agent instance (udevice) locally since the agent device will be re-created per each test. Just remove it and simplify the test flows. The test scenario is not changed at all. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: fake base protocol commands on sandboxAKASHI Takahiro
This is a simple implementation of SCMI base protocol for sandbox. The main use is in SCMI unit test. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: add a version check against base protocolAKASHI Takahiro
In SCMI base protocol version 2 (0x20000), new interfaces, BASE_SET_DEVICE_PERMISSIONS/BASE_SET_PROTOCOL_PERMISSIONS/ BASE_RESET_AGENT_CONFIGURATION, were added. Moreover, the api of BASE_DISCOVER_AGENT was changed to support self-agent discovery. So the driver expects SCMI firmware support version 2 of base protocol. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: implement SCMI base protocolAKASHI Takahiro
SCMI base protocol is mandatory according to the SCMI specification. With this patch, SCMI base protocol can be accessed via SCMI transport layers. All the commands, except SCMI_BASE_NOTIFY_ERRORS, are supported. This is because U-Boot doesn't support interrupts and the current transport layers are not able to handle asynchronous messages properly. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13test: dm: add protocol-specific channel testAKASHI Takahiro
Any SCMI protocol may have its own channel. Test this feature on sandbox as the necessary framework was added in a prior commit. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: framework for installing additional protocolsAKASHI Takahiro
This framework allows SCMI protocols to be installed and bound to the agent so that the agent can manage and utilize them later. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: move scmi_bind_protocols() backwardAKASHI Takahiro
Move the location of scmi_bind_protocols() backward for changes in later patches. There is no change in functionality. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: support dummy channels for sandbox agentAKASHI Takahiro
In sandbox scmi agent, channels are not used at all. But in this patch, dummy channels are supported in order to test protocol-specific channels. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13firmware: scmi: use a protocol's own channel if assignedAKASHI Takahiro
SCMI specification allows any protocol to have its own channel for the transport. While the current SCMI driver may assign its channel from a device tree, the core function, devm_scmi_process_msg(), doesn't use a protocol's channel, but always use an agent's channel. With this commit, devm_scmi_process_msg() tries to find and use a protocol's channel. If it doesn't exist, use an agent's. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13scmi: refactor the code to hide a channel from devicesAKASHI Takahiro
The commit 85dc58289238 ("firmware: scmi: prepare uclass to pass channel reference") added an explicit parameter, channel, but it seems to make the code complex. Hiding this parameter will allow for adding a generic (protocol-agnostic) helper function, i.e. for PROTOCOL_VERSION, in a later patch. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
2023-10-13Merge https://source.denx.de/u-boot/custodians/u-boot-usbTom Rini
- atmel gadget controller fix
2023-10-13binman: capsule: Add support for generating EFI empty capsulesSughosh Ganu
Add support in binman for generating EFI empty capsules. These capsules are used in the FWU A/B update feature. Also add test cases in binman for the corresponding code coverage. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13btool: mkeficapsule: Add support for EFI empty capsule generationSughosh Ganu
Add a method to the mkeficapsule bintool to generate empty capsules. These are capsules needed for the FWU A/B update feature. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13binman: capsule: Use dumped capsule header contents for verificationSughosh Ganu
The various fields of a generated capsule are currently verified through hard-coded offsets. Use the dump-capsule feature for dumping the capsule header contents and use those for capsule verification. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13binman: capsule: Remove superfluous [address, size]-cells propertiesSughosh Ganu
The #address-cells and #size-cells are not needed for running the capsule generation binman tests. Remove the superfluous properties. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13doc: capsule: Add documentation for the capsule dump featureSughosh Ganu
Add documentation to explain the printing of the capsule headers through the mkeficapsule tool. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13tools: mkeficapsule: Add support to print capsule headersSughosh Ganu
Add support to dump the contents of capsule headers. This is useful as a debug feature for checking the contents of the capsule headers, and can also be used in capsule verification. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13treewide: use dev_read_addr_*_ptr() where appropriateMatthias Schiffer
A follow-up to commit 842fb5de424e ("drivers: use devfdt_get_addr_size_index_ptr when cast to pointer") and commit 320a1938b6f7 ("drivers: use devfdt_get_addr_index_ptr when cast to pointer"). In addition to using the *_ptr variants of these functions where the address is cast to a pointer, this also changes devfdt_get_addr_*() to dev_read_addr_*() in a few places. Some variable and field types are changed from fdt_addr_t or phys_addr_t to void* where the cast was happening later. This patch fixes a number of compile warnings when building a 32bit U-Boot with CONFIG_PHYS_64BIT=y. In some places, it also fixes error handling where the return value of dev_read_addr() etc. was checked for NULL instead of FDT_ADDR_T_NONE. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13pinctrl: single: fix compile warnings with PHYS_64BIT on 32bitMatthias Schiffer
pinctrl-single uses fdt_addr_t and phys_addr_t inconsistently, but both are wrong to be passed to readb() etc., which expect a pointer or pointer-sized integer. Change the driver to use dev_read_addr_size_index_ptr(), so we consistently deal with void* (except for the sandbox case and single_get_pin_muxing()). Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Simon Glass <sjg@chromium.org> Add missing mapmem.h header: Signed-off-by: Simon Glass <sjg@chromium.org>
2023-10-13core: introduce dev_read_addr_name[_size]_ptr() functionsMatthias Schiffer
Same as dev_read_addr_name[_size](), but returns a pointer, cast through map_sysmem(). Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13core: return FDT_ADDR_T_NONE from devfdt_get_addr_[size_]name() on errorsMatthias Schiffer
Checking for the error cast to fdt_addr_t is rather awkward - IS_ERR() can be used, but it's not really made to be used on fdt_addr_t, which may not even be the same size as a native pointer. Most places in U-Boot only check for FDT_ADDR_T_NONE; let's adjust the error return to match the expectation. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13core: fix doc comments of dev_read_addr*() and related functionsMatthias Schiffer
- The dev_read_addr_name*() family of functions has no "index" argument, doc comments should refer to "name" - Specify the error return for several devfdt_get_addr*() functions Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13binman: bintool: Change make target arg type from string to listLukas Funke
The argument type of `build_from_git` was changed from string to list in d71e7116997f14097735f04cc7847f0a68dbc485. This commit adapts the argument type of all bintools using this function. Signed-off-by: Lukas Funke <lukas.funke@weidmueller.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
2023-10-13sandbox: fix spl_board_initHeinrich Schuchardt
sandbox_spl_defconfig with CONFIG_SPL_UNIT_TEST=n fails to build. in function `spl_board_init': arch/sandbox/cpu/spl.c:134:(.text.spl_board_init+0x4a): undefined reference to `ut_run_list' Add the missing configuration check. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13bootstd: Scan all bootdevs in a boot_targets entrySimon Glass
When the boot_targets environment variable is used with the distro-boot scripts, each device is included individually. For example, if there are three mmc devices, then we will have something like: boot_targets="mmc0 mmc1 mmc2" In contrast, standard boot supports specifying just the uclass, i.e.: boot_targets="mmc" The intention is that this should scan all MMC devices, but in fact it currently only scans the first. Update the logic to handle this case, without required BOOTSTD_FULL to be enabled. I believe at least three people reported this, but I found two. Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Date Huang <tjjh89017@hotmail.com> Reported-by: Vincent Stehlé <vincent.stehle@arm.com>
2023-10-13Merge tag 'efi-2024-01-rc1' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-efi Pull request efi-2024-01-rc1 Documentation: * Bump urllib3 version * Migrate Renesas board docs to rst * Link an introduction video UEFI * Use same GUID as EDK II for auto-created boot options * Clean up BitBlt test
2023-10-13Merge tag 'xilinx-for-v2024.01-rc1-v3' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-microblaze Xilinx changes for v2024.01-rc1 v3 clk: - remove additional compatible strings for Versal NET net: - zynq_gem: Fix clock calculation for MDC for higher frequencies pinctrl: - core: Extend pinmux status buffere size - zynqmp driver: Show also tristate configuration test: - add test case for pxe get Xilinx: - describe SelectMAP boot mode Zynq: - Fix nand description in DT ZynqMP: - DTS sync patches with kernel and also W=1 related fixes - Add support for KD240, zcu670, e-a2197 with x-prc cards, SC revB/C with i2c description for other SC based boards - k24 psu_init cleanup
2023-10-13Merge tag 'u-boot-nand-20231013' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-nand-flash Pull request for u-boot-nand-20231013 The first 5 patches are from Mikhail Kshevetskiy, aligning the mtd spinand core with kernel version 5.15.43, fixing a bug on Winbond, and adding support for Winbond W25NO2KV. The other 2 patches are from Patrick Delaunay and they fix a bug and mark bad the MTD block on erase error.
2023-10-13usb: gadget: atmel: fix transfer of queued requestsArtur Rojek
In the existing implementation, multiple requests queued up on an endpoint are subject to getting evicted without transmission. For both control and bulk endpoints, their respective logic found in usba_control_irq()/usba_ep_irq() guarantees that TX FIFO is empty before data is sent out, and that request_complete() gets called once the transaction has been finished. At this point however, if any additional requests are found on the endpoint queue, they will be processed by submit_next_request(), which makes no checks against the above conditions, trashing data on a busy FIFO and neglecting completion handlers. Fix the above issues by removing the calls to submit_next_request(), and thus forcing the pending requests to be processed on the next pass of the respective endpoint logic. While at it, remove a DBG message, as that branch becomes part of regular flow. This restores mass storage mode operation on Microchip ATSAMA5D27 SoC. Signed-off-by: Artur Rojek <artur@conclusive.pl>
2023-10-13drivers: rng: add support for Meson S4Alexey Romanov
For some Amlogic SOC's, mechanism to obtain random number has been changed. For example, S4 now uses status bit waiting algo. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20231012075828.22685-2-avromanov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-13dfu: mtd: mark bad the MTD block on erase errorPatrick Delaunay
In the MTD DFU backend, it is needed to mark the NAND block bad when the erase failed with the -EIO error, as it is done in UBI and JFFS2 code. This operation is not done in the MTD framework, but the bad block tag (in BBM or in BBT) is required to avoid to write data on this block in the next DFU_OP_WRITE loop in mtd_block_op(): the code skip the bad blocks, tested by mtd_block_isbad(). Without this patch, when the NAND block become bad on DFU write operation - low probability on new NAND - the DFU write operation will always failed because the failing block is never marked bad. This patch also adds a test to avoid to request an erase operation on a block already marked bad; this test is not performed in MTD framework in mtd_erase(). Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2023-10-13dfu: mtd: fix the trace when limit is reachedPatrick Delaunay
The offset variable = 'off' used in the error trace when limit is reach on erase operation is incorect as 'erase_op.addr' is used in the loop. This patch corrects the copy paste issue between the erase loop and the write loop. This patch also adds the 'remaining' information to allow to debug of limit issues. Fixes: 6015af28ee6d ("dfu: add backend for MTD device") Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
2023-10-13mtd: spinand: winbond: add Winbond W25N02KV flash supportMikhail Kshevetskiy
Add support of Winbond W25N02KV flash Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221010105110.446674-2-mikhail.kshevetskiy@iopsys.eu Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> (U-Boot port) Link: https://lore.kernel.org/all/20230110115843.391630-5-frieder@fris.de Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
2023-10-13mtd: spinand: winbond: fix flash identificationMikhail Kshevetskiy
Winbond uses 3 bytes to identify flash: vendor_id, dev_id_0, dev_id_1, but current driver uses only first 2 bytes of it for devices identification. As result Winbond W25N02KV flash (id_bytes: EF, AA, 22) is identified as W25N01GV (id_bytes: EF, AA, 21). Fix this by adding missed identification bytes. Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20221010105110.446674-1-mikhail.kshevetskiy@iopsys.eu Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> (U-Boot port) Link: https://lore.kernel.org/all/20230110115843.391630-4-frieder@fris.de Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>