dm: Add a No-op uclass

This uclass is intended for devices that do not need any features from the
uclass, including binding children.
This will typically be used by devices that are used to bind chi

dm: Add a No-op uclass

This uclass is intended for devices that do not need any features from the
uclass, including binding children.
This will typically be used by devices that are used to bind child devices
but do not use dm_scan_fdt_dev() to do it. That is for example the case of
several USB wrappers that have 2 child devices (1 for device and 1 for
host) but bind only one at a any given time.

(cherry-picked from 07e33711fec4f1106f36805b5dc830da07c783c5)

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220207231334.59845-2-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

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Merge branch '2019-02-08-master-imports'

- bcm6345 watchdog, bcm63158/bcm963158 initial support.
- Various TI platform resyncs and improvements.
- FDT support in Android-format images.
- stm32mp1 im

Merge branch '2019-02-08-master-imports'

- bcm6345 watchdog, bcm63158/bcm963158 initial support.
- Various TI platform resyncs and improvements.
- FDT support in Android-format images.
- stm32mp1 improvements.

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dm: device: fail uclass_find_first_device() if list_empty

While uclass_find_device() fails with -ENODEV in case of list_empty
strangely uclass_find_first_device() returns 0.

Fix uclass_find_first_d

dm: device: fail uclass_find_first_device() if list_empty

While uclass_find_device() fails with -ENODEV in case of list_empty
strangely uclass_find_first_device() returns 0.

Fix uclass_find_first_device() to also fail with -ENODEV instead.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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Merge branch 'master' of git://git.denx.de/u-boot-i2c

- DM_I2C_COMPAT removal for all ti platforms from Jean-Jacques Hiblot
- Fix in i2c command help output from Chirstoph Muellner.

dm: device: Allow using uclass_find_device_by_seq() without OF_CONTROL

If OF_CONTROL is not enabled and DM_SEQ_ALIAS is enabled, we must
assign an alias (requested sequence number) to devices that b

dm: device: Allow using uclass_find_device_by_seq() without OF_CONTROL

If OF_CONTROL is not enabled and DM_SEQ_ALIAS is enabled, we must
assign an alias (requested sequence number) to devices that belongs to a
class with the DM_UC_FLAG_SEQ_ALIAS flag. Otherwise
uclass_find_device_by_seq() cannot be used to get/probe a device. In
particular i2c_get_chip_for_busnum() cannot be used.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>

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Merge tag 'pull-30nov18' of git://git.denx.de/u-boot-dm

Fix sound on sandbox
Convert TPM fully to DM
Tidy up sandbox I2C emulation
Add a 'make qcheck' target for faster testing
A few other misc thin

Merge tag 'pull-30nov18' of git://git.denx.de/u-boot-dm

Fix sound on sandbox
Convert TPM fully to DM
Tidy up sandbox I2C emulation
Add a 'make qcheck' target for faster testing
A few other misc things
(dropped the final patch which breaks clang for some reason)

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dm: core: Export uclass_find_device_by_phandle()

This function may be useful to code outside of the code driver-model
implementation. Export it and add a test.

Signed-off-by: Simon Glass <sjg@chrom

dm: core: Export uclass_find_device_by_phandle()

This function may be useful to code outside of the code driver-model
implementation. Export it and add a test.

Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge branch '2018-11-16-master-imports'

- Initial bcm968580xref, am65x_evm_r5 support
- lpc32xx, omap3_logic/am3517_evm updates
- pinctrl command
- fs_loader available for SPL

dm: uclass: Add uclass_next_device_err() to return a valid device

Similarly to uclass_first_device_err(), add uclass_next_device_err()
which returns an error if there are no next devices in that ucl

dm: uclass: Add uclass_next_device_err() to return a valid device

Similarly to uclass_first_device_err(), add uclass_next_device_err()
which returns an error if there are no next devices in that uclass.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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Merge tag 'pull-14nov18' of git://git.denx.de/u-boot-dm

- virtio implementation and supporting patches
- DM_FLAG_PRE_RELOC fixes
- regmap improvements
- minor buildman and sandbox things

uclass: Use uclass_foreach_dev() macro instead of open coding

Use the uclass_foreach_dev() macro instead of the open coded version.

Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by

uclass: Use uclass_foreach_dev() macro instead of open coding

Use the uclass_foreach_dev() macro instead of the open coded version.

Signed-off-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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dm: core: Allow uclass to set up a device's child after it is probed

Some buses need to set up their child devices after they are probed.
Support a common child_post_probe() method for the uclass.

dm: core: Allow uclass to set up a device's child after it is probed

Some buses need to set up their child devices after they are probed.
Support a common child_post_probe() method for the uclass.

With this change, the two APIs uclass_pre_probe_device() and
uclass_post_probe_device() become symmetric.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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Merge branch 'master' of git://git.denx.de/u-boot-usb

uclass: Add dev_get_uclass_index() to get the uclass/index of a device

This function is the reciprocal of uclass_find_device().
It will be used to print the index information in dm tree dump.

Signe

uclass: Add dev_get_uclass_index() to get the uclass/index of a device

This function is the reciprocal of uclass_find_device().
It will be used to print the index information in dm tree dump.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

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Merge git://git.denx.de/u-boot-dm

dm: core: Add logging of some common errors

Add additional logging so that common errors when finding a device by
ofnode are easier to debug.

Signed-off-by: Simon Glass <sjg@chromium.org>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

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Merge git://git.denx.de/u-boot-dm

core: add uclass_get_device_by_phandle_id() api

Add api for who can not get phandle from a device property.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <phili

core: add uclass_get_device_by_phandle_id() api

Add api for who can not get phandle from a device property.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

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Merge git://git.denx.de/u-boot-dm

dm: core: Add a function to look up a uclass by name

Each uclass has a driver name which we can use to look up the uclass. This
is useful for logging, where the uclass ID is used as the category.

A

dm: core: Add a function to look up a uclass by name

Each uclass has a driver name which we can use to look up the uclass. This
is useful for logging, where the uclass ID is used as the category.

Add a function to handle this, as well as a test.

Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge git://git.denx.de/u-boot-dm

dm: core: Add uclass_first/next_device_check()

Sometimes it is useful to iterate through all devices in a uclass and
skip over those which do not work correctly (e.g fail to probe). Add two
new func

dm: core: Add uclass_first/next_device_check()

Sometimes it is useful to iterate through all devices in a uclass and
skip over those which do not work correctly (e.g fail to probe). Add two
new functions to provide this feature.

The caller must check the return value each time to make sure that the
device is valid. But the device pointer is always returned.

Signed-off-by: Simon Glass <sjg@chromium.org>

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dm: core: Clarify uclass_first/next_device() comments

These are not as clear as they could be. Tidy them up a bit. Also fix a
tiny code-style nit.

Signed-off-by: Simon Glass <sjg@chromium.org>

dm: core: Update uclass_find_device_by_phandle() for livetree

Adjust this function to work with livetree.

Signed-off-by: Simon Glass <sjg@chromium.org>