At present this driver uses 'priv' struct to hold 'plat' data, which is
confusing. The contents of the strct don't matter, since only dtoc is
using it. Create a new struct with the correct name.
Signed-off-by: Simon Glass <sjg@chromium.org>
This is not a good name anymore as it does not dump everything. Rename it
to dm_dump_tree() to avoid confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
Because fdt_get_config_str et al. were moved/renamed to
ofnode_conf_read_str, they now depend on CONFIG_DM as well as
CONFIG_OF_CONTROL. Add some fallback implementations, preventing a
linker error when CONFIG_SPL_OF_CONTROL and CONFIG_SPL_ENV_IS_IN_MMC are
enabled and CONFIG_SPL_DM is disabled.
Fixes: 7de8bd03c3 ("treewide: fdt: Move fdt_get_config_... to ofnode_conf_read...")
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
This new class of device will provide fuzzing inputs from a fuzzing
engine.
Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Introduce DM_FLAG_PROBE_AFTER_BIND flag, which can be set by driver or
uclass in .bind(), to indicate such driver instance should be probe()d
once binding of all devices is complete.
This is useful in case the driver determines that hardware initialization
is mandatory on boot, and such initialization happens only in probe().
This also solves the inability to call device_probe() from .bind().
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Steven Lawrance <steven.lawrance@softathome.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
To quote the author:
The bootflow feature provide a built-in way for U-Boot to automatically
boot an Operating System without custom scripting and other customisation.
This is called 'standard boot' since it provides a standard way for
U-Boot to boot a distro, without scripting.
It introduces the following concepts:
- bootdev - a device which can hold a distro
- bootmeth - a method to scan a bootdev to find bootflows (owned by
U-Boot)
- bootflow - a description of how to boot (owned by the distro)
This series provides an implementation of these, enabled to scan for
bootflows from MMC, USB and Ethernet. It supports the existing distro
boot as well as the EFI loader flow (bootefi/bootmgr). It works
similiarly to the existing script-based approach, but is native to
U-Boot.
With this we can boot on a Raspberry Pi 3 with just one command:
bootflow scan -lb
which means to scan, listing (-l) each bootflow and trying to boot each
one (-b). The final patch shows this.
With a standard way to identify boot devices, booting become easier. It
also should be possible to support U-Boot scripts, for backwards
compatibility only.
...
The design is described in these two documents:
https://drive.google.com/file/d/1ggW0KJpUOR__vBkj3l61L2dav4ZkNC12/view?usp=sharinghttps://drive.google.com/file/d/1kTrflO9vvGlKp-ZH_jlgb9TY3WYG6FF9/view?usp=sharing
A bootmeth is a method of locating an operating system. For now, just
add the uclass itself. Drivers for particular bootmeths are added later.
If no bootmeths devices are included in the devicetree, create them
automatically. This avoids the need for boilerplate in the devicetree
files.
Signed-off-by: Simon Glass <sjg@chromium.org>
A 'bootdev' is a device which can be used to boot an operating system.
It is a child of the media device (e.g. MMC) which handles reading files
from that device, such as a bootflow file.
Add a uclass for bootdev and the various helpers needed to make it
work. Also add a binding file, empty for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
The 'bootstd' device provides the central information about U-Boot
standard boot.
Add a uclass for bootstd and the various helpers needed to make it
work. Also add a binding file.
Signed-off-by: Simon Glass <sjg@chromium.org>
In some cases two devices are related and the only way to tell is to
check that the names partially patch. Add a way to check this without
needing to create a new string for the comparison.
Fix the comment for device_find_child_by_namelen() while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
It seems that namelen is more common in U-Boot. Rename this function to
fit in better. Also fix a bug where it breaks the operation of
uclass_get_by_name() and add a test.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reported-by: Tim Harvey <tharvey@gateworks.com>
NOTE: probably we have to update config dependencies,
in particular, SPL/TPL_PRINTF?
With this new function, UCLASS_PARTITION devices will be created as
child nodes of UCLASS_BLK device.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
When every member of a linker list is aligned by the compiler, we can no
longer rely on the sizeof of the struct to determine the number of
entries.
For example, if the struct size is 0x90 but every entry is aligned to 0xa0
by the compiler, the linker list entries takes more space in memory and
the calculation of the number of entries is incorrect. For example, we may
see 0x12 entries when there are only 0x11.
This is a real problem. There may be a general solution, although I cannot
currently think of one. So far it only bites with OF_PLATDATA_RT which
creates a pointer to each entry of the 'struct udevice' linker_list. This
does not happen without that option, so it only affects SPL.
Work around it by manually calculating the aligned size of struct udevice,
then using that for the n_ent calculation.
Note: the alignment fix to linker list was here:
0b2fa98aa5 linker_lists: Fix alignment issue
Signed-off-by: Simon Glass <sjg@chromium.org>
At present if devres is enabled in U-Boot proper it is enabled in SPL.
We don't normally want it there, so disable it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Angus Ainslie <angus@akkea.ca>
- DM9000 DM support
- tftp server bug fix
- mdio ofnode support functions
- Various phy fixes and improvements.
[trini: Fixup merge conflicts in drivers/net/phy/ethernet_id.c
drivers/net/phy/phy.c include/phy.h]
Rename constant PHY_INTERFACE_MODE_NONE to PHY_INTERFACE_MODE_NA to make
it compatible with Linux' naming.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Add helpers ofnode_read_phy_mode() and dev_read_phy_mode() to parse the
"phy-mode" / "phy-connection-type" property. Add corresponding UT test.
Use them treewide.
This allows us to inline the phy_get_interface_by_name() into
ofnode_read_phy_mode(), since the former is not used anymore.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add helpers ofnode_get_phy_node() and dev_get_phy_node() and use it in
net/mdio-uclass.c function dm_eth_connect_phy_handle(). Also add
corresponding UT test.
This is useful because other part's of U-Boot may want to get PHY ofnode
without connecting a PHY.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
With dm-tag feature, any U-Boot subsystem is allowed to associate
arbitrary number of data with a particular udevice. This can been
see as expanding "struct udevice" without modifying the definition.
As a first user, UEFI subsystem makes use of tags to associate
an efi_disk object with a block device.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This file uses struct driver, so declare it at the top in case the
header-inclusion order is not as expected.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use Sphinx style comments to describe functions.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
microblaze:
- Add support for reserved memory
xilinx:
- Update FRU code with MAC reading
zynqmp:
- Remove double AMS setting
- DT updates (mostly for SOMs)
- Add support for zcu106 rev 1.0
zynq:
- Update nand binding
nand:
- Aligned zynq_nand to upstream DT binding
net:
- Add support for ethernet-phy-id
mmc:
- Workaround CD in zynq_sdhci driver also for ZynqMP
- Add support for dynamic/run-time SD config for SOMs
gpio:
- Add driver for slg7xl45106
firmware:
- Add support for dynamic SD config
power-domain:
- Update zynqmp driver with the latest firmware
video:
- Add skeleton driver for DP and DPDMA
i2c:
- Fix i2c to work with QEMU
pinctrl:
- Add driver for zynqmp pinctrl driver
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Merge tag 'xilinx-for-v2022.07-rc1' of https://source.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2022.07-rc1
microblaze:
- Add support for reserved memory
xilinx:
- Update FRU code with MAC reading
zynqmp:
- Remove double AMS setting
- DT updates (mostly for SOMs)
- Add support for zcu106 rev 1.0
zynq:
- Update nand binding
nand:
- Aligned zynq_nand to upstream DT binding
net:
- Add support for ethernet-phy-id
mmc:
- Workaround CD in zynq_sdhci driver also for ZynqMP
- Add support for dynamic/run-time SD config for SOMs
gpio:
- Add driver for slg7xl45106
firmware:
- Add support for dynamic SD config
power-domain:
- Update zynqmp driver with the latest firmware
video:
- Add skeleton driver for DP and DPDMA
i2c:
- Fix i2c to work with QEMU
pinctrl:
- Add driver for zynqmp pinctrl driver
Xilinx ZynqMP SOC can set 6 parameters for its pins. pinmux status
command will print the status of these parameters for each pin. But
current print buffer length is only 40 characters long, increase it
to 80 to print all the parameters.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/3a6be84c8354f38754a9838670cc0319e84f29e8.1645626183.git.michal.simek@xilinx.com
Generate events when devices are probed or removed, allowing hooks
to be added for these situations.
This is controlled by the DM_EVENT config option.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use parenthesis for the device_get_ops macro argument. This prevents
errors when using an expression for the parameter.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present this list is used to collect items within the DSDT and SSDT
tables. It is useful for it to collect the whole tables as well, so there
is a list of what was created and which write created each one.
Refactor the code accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move this table over to use a writer function, moving the code from the
x86 implementation.
Add a pointer to the DSDT in struct acpi_ctx so we can reference it later.
Disable this table for sandbox since we don't actually compile real ASL
code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move this table over to use a writer function, moving the code from the
x86 implementation.
Add a pointer to the DSDT in struct acpi_ctx so we can reference it later.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use the new ACPI writer to write the base tables at the start of the area,
moving this code from the x86 implementation.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present acpi_setup_base_tables() both sets up the ACPI context and
writes out the base tables.
We want to use an ACPI writer to write the base tables, so split this
function into two, with acpi_setup_ctx() doing the context set, and
acpi_setup_base_tables() just doing the base tables.
Disable the writer's write_acpi_tables() function for now, to avoid
build errors. It is enabled in a following patch.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we call lots of functions to generate the required ACPI tables.
It would be better to standardise these functions and allow them to be
automatically collected and used when needed.
Add a linker list to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to record the start of an ACPI table so that offsets from
that point can be easily calculated.
Add this to the context and set it before calling the writer method.
Signed-off-by: Simon Glass <sjg@chromium.org>
Correct Sphinx style comments in include/dm/fdtaddr.h
and add the devfdt API to the HTML documentation;
these functions are NOT compatible with live tree.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/ofnode.h
and add the device tree node API to the HTML documentation;
the ofnode functions are compatible with Live tree or with flat
device tree.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/read.h
and add the device read from device tree API to the HTML
documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/devres.h
and add the driver model device resource API, devres_*(),
to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/device.h
and add the driver model device API to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/platdata.h
and add the associated API to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/lists.h
and add the list API to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/devres.h
and add the associated driver model API to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Correct Sphinx style comments in include/dm/uclass.h
and add the driver model UCLASS API to the HTML documentation.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Due to a non-existing parameter name in macro's, use of those macro's will
cause a compiler error of "undefined reference".
Unfortunately, dm test doesn't fail because a wrong name ("&dev", hence it
is accidentally a valid name in the context of a caller site) is passed on.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Fixes: f262d4ca4b ("dm: core: Add a way to read platdata for all
child devices")
Fixes: 903e83ee84 ("dm: core: Add a way to iterate through children,
probing each")
Reviewed-by: Simon Glass <sjg@chromium.org>
UCLASS_EFI_LOADER is used for devices created by applications and
drivers loaded by U-Boots UEFI implementation.
This patch provides a new uclass (UCLASS_EFI_MEDIA) to be used for devices
that provided by a UEFI firmware calling U-Boot as an EFI application.
If the two uclasses can be unified, is left to future redesign.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
These names are better used for access to devices provided by an EFI
layer. Use EFI_LOADER instead here, since these are only available in
U-Boot's EFI_LOADER layer.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Use the return value ENOSYS for unsupported API
- pinctrl_generic_set_state
- pinctrl_select_state
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a function that returns the number of devices in a uclass. This can be
helpful in sizing an array that needs to hold a list of them.
Signed-off-by: Simon Glass <sjg@chromium.org>
In some cases it is useful to search just by a partial name, such as
when looking for a sibling device that has a common name substring. Add
helper functions to handle these requirements.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we support reading a string list a string at a time. Apart
from being inefficient, this makes it impossible to separate reading of
the devicetree into the of_to_plat() method where it belongs, since any
code which needs access to the string must read it from the devicetree.
Add a function which returns the string property as an array of pointers
to the strings, which is easily used by clients.
Signed-off-by: Simon Glass <sjg@chromium.org>
The details for of_property_read_string_helper() and
ofnode_read_string_index() are a little inaccurate. Fix up the comments to
avoid confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
This method is currently called after the platform data has been freed.
But the pre_unbind() method may wish to access this, e.g. to free some
data structures stored there.
Split the unbinding of devices into two pieces, as is done with removal.
This corrects the problem.
Also tidy a code-style issue in device_remove() while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Certain serial SERDES protocols like 1000base-x, 2500base-x, SGMII,
USXGMII can operate either in a mode where the PHY (be it on-board or
inside an SFP module) passes the link parameters (speed, duplex, pause)
to the MAC through in-band through control words standardized by IEEE
802.3 clause 37, or in a mode where the MAC must configure (force) its
link parameters based on information obtained out-of-band (MDIO reads,
guesswork etc).
In Linux, the OF node property named "managed" is parsed by the phylink
framework, and the convention is that if a driver uses phylink, then the
presence of this property means that in-band autoneg should be enabled,
otherwise it shouldn't.
To be compatible with the OF node bindings of drivers that use phylink
in Linux, introduce parsing support for this property in U-Boot too.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Add a helper to iterate over all nodes with a given compatible string.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This uclass is intended to manage IOMMUs on systems where the
IOMMUs are not in bypass mode by default. In that case U-Boot
cannot ignore the IOMMUs if it wants to use devices that need
to do DMA and sit behind such an IOMMU.
This initial IOMMU uclass implementation does not implement and
device ops and is intended for IOMMUs that have a bypass mode
that does not require address translation. Support for IOMMUs
that do require address translation is planned and device ops
will be defined when support for such IOMMUs will be added.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Fix up the header's include guard to contain the definition of
dm_priv_to_rw(), which was erroneously added outside of it, by moving
its #endif to the end of the file (i.e. where it belongs). This removes
the risk of compilation errors resulting from the redefinition of that
function where the header might have been (indirectly) included more
than once.
Fixes: cfb9c9b77c ("dm: core: Use separate priv/plat data region")
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Cc: Simon Glass <sjg@chromium.org>
Like dev_read_addr_ptr(), provide a wrapper for the indexed version.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present there is only devfdt_get_addr_ptr() which only returns
the first <addr, size> pair in the 'reg' property. Add a new API
devfdt_get_addr_index_ptr() to return the indexed pointer.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
- Disable bi_boot_params for STM32 MCU and MPU boards
- Update stm32-usbphyc node management
- Convert CONFIG_STM32_FLASH to Kconfig for STM32 MCU boards
- Convert some USB config flags to Kconfig for various boards
- Convert CONFIG_BOOTCOMMAND flag to Kconfig for STM32 F429 board
- Remove specific CONFIG_STV0991 flags
- Remove unused CONFIG_USER_LOWLEVEL_INIT flag
- Add ofdata_to_platdata() callback for stm32_spi driver
- Update for stm32f7_i2c driver
- Remove gpio_hog_probe_all() from STM32 MP1 board
- Fix bind command
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Merge tag 'u-boot-stm32-20211012' of https://source.denx.de/u-boot/custodians/u-boot-stm
- Disable ATAGS for STM32 MCU and MPU boards
- Disable bi_boot_params for STM32 MCU and MPU boards
- Update stm32-usbphyc node management
- Convert CONFIG_STM32_FLASH to Kconfig for STM32 MCU boards
- Convert some USB config flags to Kconfig for various boards
- Convert CONFIG_BOOTCOMMAND flag to Kconfig for STM32 F429 board
- Remove specific CONFIG_STV0991 flags
- Remove unused CONFIG_USER_LOWLEVEL_INIT flag
- Add ofdata_to_platdata() callback for stm32_spi driver
- Update for stm32f7_i2c driver
- Remove gpio_hog_probe_all() from STM32 MP1 board
- Fix bind command
Signed-off-by: Tom Rini <trini@konsulko.com>
Fix a regression brings by commit 84f8e36f03 ("cmd: bind: allow to
bind driver with driver data")
As example, the following bind command doesn't work:
bind /soc/usb-otg@49000000 usb_ether
As usb_ether driver has no compatible string, it can't be find by
lists_bind_fdt(). In bind_by_node_path(), which called lists_bind_fdt(),
the driver entry is known, pass it to lists_bind_fdt() to force the driver
entry selection.
For this, add a new parameter struct *driver to lists_bind_fdt().
Fix also all lists_bind_fdt() callers.
Fixes: 84f8e36f03 ("cmd: bind: allow to bind driver with driver data")
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reported-by: Herbert Poetzl <herbert@13thfloor.at>
Cc: Marek Vasut <marex@denx.de>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
zynq:
- Enable capsule update for qspi and mmc
- Update zed DT qspi compatible string
zynqmp:
- Add missing modeboot for EMMC
- Add missing nand DT properties
- List all eeproms for SC on vck190
- Add vck190 SC psu_init
clk:
- Handle only GATE type clock for Versal
watchdog:
- Update versal driver to handle system reset
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Merge tag 'xilinx-for-v2022.01-rc1' of https://source.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2022.01-rc1
zynq:
- Enable capsule update for qspi and mmc
- Update zed DT qspi compatible string
zynqmp:
- Add missing modeboot for EMMC
- Add missing nand DT properties
- List all eeproms for SC on vck190
- Add vck190 SC psu_init
clk:
- Handle only GATE type clock for Versal
watchdog:
- Update versal driver to handle system reset
Force the mtd name of spi-nor to "nor" + the driver sequence number:
"nor0", "nor1"... beginning after the existing nor devices.
This patch is coherent with existing "nand" and "spi-nand"
mtd device names.
When CFI MTD NOR device are supported, the spi-nor index is chosen after
the last CFI device defined by CONFIG_SYS_MAX_FLASH_BANKS.
When CONFIG_SYS_MAX_FLASH_BANKS_DETECT is activated, this config
is replaced by to cfi_flash_num_flash_banks in the include file
mtd/cfi_flash.h.
This generic name "nor%d" can be use to identify the mtd spi-nor device
without knowing the real device name or the DT path of the device,
used with API get_mtd_device_nm() and is used in mtdparts command.
This patch also avoids issue when the same NOR device is present 2 times,
for example on STM32MP15F-EV1:
STM32MP> mtd list
SF: Detected mx66l51235l with page size 256 Bytes, erase size 64 KiB, \
total 64 MiB
List of MTD devices:
* nand0
- type: NAND flash
- block size: 0x40000 bytes
- min I/O: 0x1000 bytes
- OOB size: 224 bytes
- OOB available: 118 bytes
- ECC strength: 8 bits
- ECC step size: 512 bytes
- bitflip threshold: 6 bits
- 0x000000000000-0x000040000000 : "nand0"
* mx66l51235l
- device: mx66l51235l@0
- parent: spi@58003000
- driver: jedec_spi_nor
- path: /soc/spi@58003000/mx66l51235l@0
- type: NOR flash
- block size: 0x10000 bytes
- min I/O: 0x1 bytes
- 0x000000000000-0x000004000000 : "mx66l51235l"
* mx66l51235l
- device: mx66l51235l@1
- parent: spi@58003000
- driver: jedec_spi_nor
- path: /soc/spi@58003000/mx66l51235l@1
- type: NOR flash
- block size: 0x10000 bytes
- min I/O: 0x1 bytes
- 0x000000000000-0x000004000000 : "mx66l51235l"
The same mtd name "mx66l51235l" identify the 2 instances
mx66l51235l@0 and mx66l51235l@1.
This patch fixes a ST32CubeProgrammer / stm32prog command issue
with nor0 target on STM32MP157C-EV1 board introduced by
commit b7f060565e ("mtd: spi-nor: allow registering multiple MTDs when
DM is enabled").
Fixes: b7f060565e ("mtd: spi-nor: allow registering multiple MTDs when DM is enabled")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
[trini: Add <dm/device.h> to <mtd.h> for DM_MAX_SEQ_STR]
Signed-off-by: Tom Rini <trini@konsulko.com>
Now that we have a 'positive' Kconfig option, use this instead of the
negative one, which is harder to understand.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current API is outdated as it requires a devicetree pointer.
Move these functions to use the ofnode API and update this globally. Add
some tests while we are here.
Correct the call in exynos_dsim_config_parse_dt() which is obviously
wrong.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add UCLASS_HASH for hash driver development. Thus the
hash drivers (SW or HW-accelerated) can be developed
in the DM-based fashion.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Define a UCLASS API for verifying ECDSA signatures. Unlike
UCLASS_MOD_EXP, which focuses strictly on modular exponentiation,
the ECDSA class focuses on verification. This is done so that it
better aligns with mach-specific implementations, such as stm32mp.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
At present it is possible to call uclass_get() before driver model is
inited. In fact this happens on x86 boards which use Intel FSPv1, since
mrccache_get_region() tries to get the SPI flash device very early
during init.
This has always been undefined behaviour. Previously it generally worked,
i.e. returned an error code without crashing, because gd->uclass_root_s
is zeroed and the uclass can be added despite driver model not being
ready, due to the way lists are implemented. With the change to use a
gd->uclass_root pointer, this no-longer works. For example, it causes a
hang on minnowmax.
Fix this by adding a check that driver model is ready when uclass_get() is
called. This function is called in the process of locating any device, so
it is a good place to add the check.
This fixes booting on minnowmax.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 8a715530bb ("dm: core: Allow the uclass list to move")
Migrate the dm_warn function to log macro with
LOGC_DM category and LOGL_WARNING level.
This macro allows filtering with log command and allows
output on all log backend.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
A new driver uclass is created to handle the reboot mode control.
The new uclass driver is updating an environment variable with the
configured reboot mode. The mode is extracted from a map provided
at initialization time. The map contains a list of modes
and associated ids.
Signed-off-by: Nandor Han <nandor.han@vaisala.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Update the result of do_status and always returns a CMD_RET_ value
(-ENOSYS was a possible result of show_pinmux).
This patch also adds pincontrol name in error messages (dev->name)
and treats correctly the status sub command when pin-controller device is
not selected.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Each _device_ belonging to a given uclass of course has its own ->ops,
of a type determined by and known to the uclass.
However, no instance of a uclass_driver seems to populate ->ops, and
the only reference to it in code is this relocation.
Moreover, it's not really clear what could sensibly be assigned; it
would have to be some "struct uclass_ops *" providing a set of methods
for the core to call on that particular uclass, but should the need
for that ever arise, it would be better to have a member of that
particular type instead of void*.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add function for retrieving full node path of a given ofnode.
This uses np->full_name if OF is live, otherwise a call to
fdt_get_path() is made.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Add functions ofnode_get_addr_size_index_notrans(), which is a
non-translating version of ofnode_get_addr_size_index().
Some addresses are not meant to be translated, for example those of MTD
fixed-partitions.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Add functions to add size of addresses in the device tree using ofnode
references.
If the size is not set, return FDT_SIZE_T_NONE.
Signed-off-by: Chen Guanqiao <chenguanqiao@kuaishou.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present we decode simple bus <ranges> using the following assumption:
- parent #address-cells 1
- child #address-cells 1
- child #size-cells 1
However this might not always be the case.
Update to use fdt_addr_t and fdt_size_t in 'struct simple_bus_plat', and
use fdt_read_ranges() to correctly decode it according to the actual
parent and child #address-cells / #size-cells under a Kconfig option
CONFIG_SIMPLE_BUS_CORRECT_RANGE which can be turned on for any board
that needs it.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Introduce a helper API ofnode_phy_is_fixed_link() to detect whether
the ethernet controller connects to a fixed-link pseudo-PHY device.
Note there are two ways to describe a fixed PHY attached to an
Ethernet device:
- the new DT binding, where 'fixed-link' is a sub-node of the
Ethernet device
- the old DT binding, where 'fixed-link' is a property with 5
cells encoding various information about the fixed PHY
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
We move qfw into its own uclass and split the PIO functions into a
specific driver for that uclass. The PIO driver is selected in the
qemu-x86 board config (this covers x86 and x86_64).
include/qfw.h is cleaned up and documentation added.
Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
When including this file on a board other than sandbox (e.g by enabling
UNIT_TEST and CMD_SETEXPR) an results. Fix it by declaring struct udevice
first.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Allow referencing a CBFS file in the flashmap, so that it is possible to
boot from coreboot, where files are not available from binman.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add a warning to each of these functions so that people do not attempt to
use them outside driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Make use of the new priv/plat data region if enabled. This is implemented
as a simple offset from the position set up by dtoc to the new position.
So long as all access goes through dm_priv_to_rw() this is safe.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
When of-platdata-inst is active, use the flags in the new udevice_rt
table, dropping them from the main struct udevice. This ensures that the
latter is not updated at runtime.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
At present when driver model needs to change a device it simply updates
the struct udevice structure. But with of-platdata-inst most of the fields
are not modified at runtime. In fact, typically only the flags need to
change.
For systems running SPL from read-only memory it is convenient to separate
out the runtime information, so that the devices don't need to be copied
before being used.
Create a new udevice_rt table, similar to the existing driver_rt. For now
it just holds the flags, although they are not used in this patch.
Add a new Kconfig for the driver_rt data, since this is not needed when
of-platdata-inst is used.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This function finds a device by its driver_info index. With
of-platdata-inst we do not use driver_info, but instead instantiate
udevice records at build-time.
However the semantics of using the function are the same in each case:
the caller provides an index and gets back a device.
So rename the function to device_get_by_ofplat_idx(), so that it can be
used for both situations. The caller does not really need to worry about
the details.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This function is now only used in a test. Drop it. Also drop
DM_DRVINFO_GET() which was the only purpose for having the function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
When OF_PLATDATA_INST is enabled we don't need to create the uclass list.
Instead we just need to point to the existing list. Update the code
accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Add macros which work with instantiated devices and uclasses, as created
at build time by dtoc. Include variants that can be used in data
structures.
These are mostly used by dtoc but it is worth documenting them fully for
the occasional case where they might come up in user code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support for generating a file containing uclass instances. This avoids
the need to create these at run time.
Update a test uclass to include a 'priv_auto' member, to increase test
coverage.
Signed-off-by: Simon Glass <sjg@chromium.org>
Typically dtoc can detect the header file needed for a driver by looking
for the structs that it uses. For example, if a driver as a .priv_auto
that uses 'struct serial_priv', then dtoc can search header files for the
definition of that struct and use the file.
In some cases, enums are used in drivers, typically with the .data field
of struct udevice_id. Since dtoc does not support searching for these,
add a way to tell dtoc which header to use. This works as a macro included
in the driver definition.
Signed-off-by: Simon Glass <sjg@chromium.org>
U-Boot operates in several phases, typically TPL, SPL and U-Boot proper.
The latter does not use dtoc.
In some rare cases different drivers are used for two phases. For example,
in TPL it may not be necessary to use the full PCI subsystem, so a simple
driver can be used instead.
This works in the build system simply by compiling in one driver or the
other (e.g. PCI driver + uclass for SPL; simple_bus for TPL). But dtoc has
no way of knowing which code is compiled in for which phase, since it does
not inspect Makefiles or dependency graphs.
So to make this work for dtoc, we need to be able to explicitly mark
drivers with their phase. This is done by adding an empty macro to the
driver. Add support for this in dtoc.
Signed-off-by: Simon Glass <sjg@chromium.org>
Driver model is a core part of U-Boot. We don't really need to have a
separate test structure for the driver model tests and it makes it harder
to write a test if you have to think about which type of test it is.
Subsume the fields from struct dm_test_state into struct unit_test_state
and delete the former.
Signed-off-by: Simon Glass <sjg@chromium.org>
Ultimately we want to get rid of the special driver model test init and
use test_pre_run() and test_post_run() for all tests. As a first step,
use those function to handle console recording.
For now we need a special case for setting uts->start, but that wil go
away once all init is in one place.
Signed-off-by: Simon Glass <sjg@chromium.org>
Calculating the DMA offset between a bus address space and CPU's every
time we call phys_to_bus() and bus_to_phys() isn't ideal performance
wise, as it implies traversing the device tree from the device's node up
to the root. Since this information is static and available before the
device's initialization, parse it before the probe call an provide the
DMA offset in 'struct udevice' for the address translation code to use
it.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Add the following functions to get a specific device's DMA ranges:
- dev_get_dma_range()
- ofnode_get_dma_range()
- of_get_dma_range()
- fdt_get_dma_range()
They are specially useful in oder to be able validate a physical address
space range into a bus's and to convert addresses from and to address
spaces.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
DSA stands for Distributed Switch Architecture and it covers switches that
are connected to the CPU through an Ethernet link and generally use frame
tags to pass information about the source/destination ports to/from CPU.
Front panel ports are presented as regular ethernet devices in U-Boot and
they are expected to support the typical networking commands.
DSA switches may be cascaded, DSA class code does not currently support
this.
Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Add another flag to the DM core which could be assigned to drivers and
which makes those drivers call their remove callbacks last, just before
booting OS and after all the other drivers finished with their remove
callbacks. This is necessary for things like clock drivers, where the
other drivers might depend on the clock driver in their remove callbacks.
Prime example is the mmc subsystem, which can reconfigure a card from HS
mode to slower modes in the remove callback and for that it needs to
reconfigure the controller clock.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
At present if device_remove() decides that the device should not actually
be removed, it still calls the uclass pre_remove() method and powers the
device down.
Signed-off-by: Simon Glass <sjg@chromium.org>
This flag has the word 'REMOVE' in it which means it conflicts with
the DM_REMOVE flags. Rename it to DM_FLAG_LEAVE_PD_ON which seems to
indicate its purpose well enough.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
The auto_alloc_size members of struct driver has been renamed auto.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
Re-send because of line-wraps.
Without this patch, u-boot just hangs if the fdt pointer is
not initialized. The diagnostic subsystems are not yet initialized,
so all you get is a blind hang.
Signed-off-by: Stanislav.Pinchuk@kaspersky.com
At present if these calls are used with of-platdata, a confusing error is
produced, referring to a function not actually called by the code causing
the problem.
Fix this by not inlining, so that the error mentions the dev_read_...()
function and it is more obvious what is going on.
Signed-off-by: Simon Glass <sjg@chromium.org>
Support a common method to probe all devices associated with uclass.
This includes data structures and code for finding the first device and
looping for remaining devices associated with uclasses (groups of devices
with the same purpose, e.g. all SERIAL ports will be in the same uclass).
An example is SBSA compliant PL011 UART IP, where firmware does the serial
port initialization and prepare uart device to let the kernel use it for
sending and reveiving the characters.SERIAL uclass will use this function
to initialize PL011 UART ports.
The feature is enabled with CONFIG_DM.
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
The patch adds a function to get display timings from the device tree
node attached to the device.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
This has not been needed since parent information was added and we started
using indicies for references to other drivers instead of pointers. It was
kept around in the expectation that it might be needed later.
However with the latest updates, it doesn't seem likely that we'll need
this in the foreseeable future.
Drop dm_populate_phandle_data() from dtoc and driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use this new name to be consistent with the rest of U-Boot, which talks
about 'plat' for the platform data, which is what this file holds.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use the U_BOOT_ prefix (i.e. U_BOOT_DRIVER) to declare a driver but
in every other case we just use DM_. Update the alias macros to use the
DM_ prefix.
We could perhaps rename U_BOOT_DRIVER() to DM_DRIVER(), but this macro
is widely used and there is at least some benefit to indicating it us a
U-Boot driver, particularly for code ported from Linux. So for now, let's
keep that name.
Signed-off-by: Simon Glass <sjg@chromium.org>
In the spirit of using the same base name for all of these related macros,
rename this to have the operation at the end. This is not widely used so
the impact is fairly small.
Signed-off-by: Simon Glass <sjg@chromium.org>
This does not get a device (struct udevice *) but a struct driver_info *
so the name is confusing.
Rename it accordingly. Since we plan to have several various of these
macros, put GET at the end instead of the middle, so it is easier to spot
the related macros.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current macro is a misnomer since it does not declare a device
directly. Instead, it declares driver_info record which U-Boot uses at
runtime to create a device.
The distinction seems somewhat minor most of the time, but is becomes
quite confusing when we actually want to declare a device, with
of-platdata. We are left trying to distinguish between a device which
isn't actually device, and a device that is (perhaps an 'instance'?)
It seems better to rename this macro to describe what it actually is. The
macros is not widely used, since boards should use devicetree to declare
devices.
Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is
declaring a new driver_info record, not a device.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the uclass list head is in global_data. This is convenient
but with the new of-platdata we need the list head to be declared by
the generated code.
Change this over to be a pointer. Provide a 'static' version in
global_data to retain the current behaviour.
Signed-off-by: Simon Glass <sjg@chromium.org>
To avoid having people accidentally access this member, add a trailing
underscore. Also remove it when of-platdata is enabled, since it is not
used.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present ofnode is present in the device even if it is never used. With
of-platdata this field is not used, so can be removed. In preparation for
this, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
We have two functions which do the same thing. Standardise on
dev_has_ofnode() since there is no such thing as an 'invalid' ofnode in
normal operation: it is either null or missing.
Also move the functions into one place.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
At present flags are stored as part of the device. In preparation for
storing them separately, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that the sequence-numbering migration is complete, rename this member
back to seq_, adding an underscore to indicate it is internal to driver
model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
With the new of-platdata, these need to be available to dt_platdata.c
so must be in header files. Move them.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present several test drivers are part of the test file itself. Some of
these are useful for of-platdata tests. Separate them out so we can use
them for other things also.
A few adjustments are needed so this driver can build for sandbox_spl as
well.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the entire test state is effective passed into a test driver
just to record which device was removed. This is unnecessary and makes it
harder to track what is going on.
Use a simple boolean instead.
Also drop the unused 'removed' member while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
These are supposed to be private to driver model, not accessed by any code
outside. Add a trailing underscore to indicate this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add functions so this information is not accessed directly. This will be
needed for of-platdata which stores it in a different place.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present the name 'uclass_driver' is used for the uclass linker list.
This does not follow the convention of using the struct name. Fix it.
Signed-off-by: Simon Glass <sjg@chromium.org>
A recent change to unify the flattree/livetree code introduced a small
size increase in SPL on some boards. For example SPL code size for
px30-core-ctouch2-px30 increased by 40 bytes.
To address this we can take advantage of the fact that some of the ofnode
functions are only called a few times in SPL, so it is worth inlining
them.
Add new Kconfig options to control this. These functions are not inlined
for U-Boot proper, since this increases code size.
Fixes: 2ebea5eaeb ("dm: core: Combine the flattree and livetree binding code")
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that migration to the new sequence numbers is complete, drop the old
fields. Add a test that covers the new behaviour.
Also drop the check for OF_PRIOR_STAGE since we always assign sequence
numbers now.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function current deals with req_seq which is deprecated. Update it to
use the new sequence numbers, putting them above existing aliases. Rename
the function to make this clear.
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that there is only one sequence number (rather than both requested and
assigned ones) we can simplify this function. Also update its caller to
simplify the logic.
Signed-off-by: Simon Glass <sjg@chromium.org>
Check that this flag operates as expected. This patch is not earlier in
this series since is uses the new behaviour of dev_seq().
Signed-off-by: Simon Glass <sjg@chromium.org>
Some buses have their own rules which require assigning sequence numbers
with a bus-specific algorithm. For example, PCI requires that sub-buses
are numbered higher than their parent buses, meaning effectively that
parent buses must be numbered only after all of their child buses have
been numbered.
Add a uclass flag to indicate that driver model should not assign sequence
numbers. In this case, the uclass must do it.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present each device has two sequence numbers, with 'req_seq' being
set up at bind time and 'seq' at probe time. The idea is that devices
can 'request' a sequence number and then the conflicts are resolved when
the device is probed.
This makes things complicated in a few cases, since we don't really know
what the sequence number will end up being. We want to honour the
bind-time requests if at all possible, but in fact the only source of
these at present is the devicetree aliases. Since we have the devicetree
available at bind time, we may as well just use it, in the hope that the
required processing will turn out to be useful later (i.e. the device
actually gets used).
Add a new 'sqq' member, the bind-time sequence number. It operates in
parallel to the old values for now. All devices get a valid sqq value,
i.e. it is never -1.
Drop an #ifdef while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present this is passed a uclass ID and it has to do a lookup. The
callers all have the uclass pointer, except for the I2C uclass where the
code will soon be deleted.
Update the argument to a uclass * instead of an ID since it is more
efficient.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present various drivers etc. access the device's 'seq' member directly.
This makes it harder to change the meaning of that member. Change access
to go through a function instead.
The drivers/i2c/lpc32xx_i2c.c file is left unchanged for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
