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Move USB controller Base address mapping from ls102xa immap
to fsl xhci header. This is required to remove any warnings when
controller base addresses are mapped for multiple platforms
in their respective files.
Signed-off-by: Nikhil Badola <[email protected]>
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This adjusts (micro)frame length to appropriate value thus
avoiding USB devices to time out over a longer run
Signed-off-by: Nikhil Badola <[email protected]>
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Enable USB IP support for both EHCI and XHCI for
ls1021aqds platform
Signed-off-by: Ramneek Mehresh <[email protected]>
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Enable USB IP support for both EHCI and XHCI for
ls1021atwr platform
Signed-off-by: Ramneek Mehresh <[email protected]>
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Add xhci driver support for all FSL socs
Signed-off-by: Ramneek Mehresh <[email protected]>
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Remove all redundant dwc3 driver function calls that
are defined by dwc3 driver
Signed-off-by: Ramneek Mehresh <[email protected]>
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Remove all redundant dwc3 driver function calls that
are defined by dwc3 driver
Signed-off-by: Ramneek Mehresh <[email protected]>
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Remove all redundant dwc3 driver function calls that
are defined by dwc3 driver
Signed-off-by: Ramneek Mehresh <[email protected]>
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Add support for DWC3 XHCI controller driver
Signed-off-by: Ramneek Mehresh <[email protected]>
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Some drivers may want to implement this method for some of their devices but
not for others. So it is not possible to just leave the operation out of
the table. Drivers could get around this by masquerading as two separate
drivers but that seems unpleasant.
Allow the driver to return an error when it does not want to process the
write_hwaddr() method.
Signed-off-by: Simon Glass <[email protected]>
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Now that the RTL8169 driver warning is fixed we can drop this. The incorrect
value is causing problems with USB EHCI.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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In Linux USB_DEVICE() is used to declare a USB device by vendor/device ID.
We should follow the same convention in U-Boot. Rename the existing
USB_DEVICE() macro to U_BOOT_USB_DEVICE() and bring in the USB_DEVICE()
macro from Linux for use in U-Boot.
Signed-off-by: Simon Glass <[email protected]>
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At present USB Ethernet does not work with CONFIG_DM_ETH. Add driver model
support to this feature, so that it can work alongside other Ethernet
devices with driver model.
It was found that quite a bit of code is common in most of the USB Ethernet
drivers. Add this code to the common layer to reduce the amount of duplicate
code needed in USB Ethernet drivers when CONFIG_DM_ETH is used.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Marek Vasut <[email protected]>
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Some devices can take a long time to work out whether they have a new packet
or now. For example the ASIX USB Ethernet dongle can take 5 seconds to do
this, since it waits until it gets a new packet on the wire before allowing
the USB bulk read packet to be submitted.
At present with driver mode the Ethernet receive code reads 32 packets. This
can take a very long time if we must wait for all 32 packets. The old code
(before driver model) worked by reading a single set of packets from the USB
device, then processing all the packets with in. It would be nice to use
the same behaviour with driver model.
Add a flag to the receive method which indicates that the driver should try
to find a packet if available, by consulting the hardware. When the flag is
not set, it should just return any packet data it has already received. If
there is none, it should return -EAGAIN so that the loop will terminate.
Signed-off-by: Simon Glass <[email protected]>
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The function documentation is incorrect. Fix it.
Signed-off-by: Simon Glass <[email protected]>
Acked-by: Marek Vasut <[email protected]>
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It is useful to be able to find the full PCI address (bus, device and
function) for a PCI device. Add a function to provide this.
Adjust the existing code to use this.
Signed-off-by: Simon Glass <[email protected]>
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At present all PCI devices must be present in the device tree in order to
be used. Many or most PCI devices don't require any configuration other than
that which is done automatically by U-Boot. It is inefficent to add a node
with nothing but a compatible string in order to get a device working.
Add a mechanism whereby PCI drivers can be declared along with the device
parameters they support (vendor/device/class). When no suitable driver is
found in the device tree the list of such devices is consulted to determine
the correct driver. If this also fails, then a generic driver is used as
before.
The mechanism used is very similar to that provided by Linux and the header
file defintions are copied from Linux 4.1.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Joe Hershberger <[email protected]>
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Allow usb uclass host drivers to implement usb_reset_root_port, this is
used by single port usb hosts which do not emulate a hub, such as otg
controllers.
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Simon Glass <[email protected]>
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These functions are useful to remove all children from an usb bus before
rescanning the bus. Give them a better name and export them.
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Add an usb_device parameter to usb_reset_root_port so that it knows which
root-port it is resetting. This is necessary for proper device-model support
for usb_reset_root_port.
Also remove a duplicate declaration of usb_reset_root_port() from usb.h .
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Drop the unneeded portnr function argument, the portnr is part of the
usb_device struct which is passed via the dev argument.
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Simon Glass <[email protected]>
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The device-model usb_legacy_port_reset function calls the device-model
usb_port_reset function which is a 1 on 1 copy of the non dm
usb_legacy_port_reset and this is the only use of usb_port_reset in all
of u-boot.
Drop both, and alway use the usb_legacy_port_reset() version in
common/usb.c .
Also while at it make it static as it is only used in common/usb.c .
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Some functions can return ERR_PTR(errval). Add a unit test macro to check
that no error is returned in a pointer.
Signed-off-by: Simon Glass <[email protected]>
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We normally use -ENODEV for a missing device, rather than -ENOENT. The
latter is reserved for when we have a device but cannot find something
within it.
Also avoid looking at the root LED device since it is only a container.
Signed-off-by: Simon Glass <[email protected]>
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Add a new reset_walk_halt() function to cause a reset and then halt on
failure. The reset_walk() function returns an error code.
This is needed for testing since otherwise U-Boot will halt in the middle
of a test.
Signed-off-by: Simon Glass <[email protected]>
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We should guide people more strongly towards device tree to avoid the
proliferation of platform data structures. Add documentation to the driver
model README, and also the platform data header file.
Signed-off-by: Simon Glass <[email protected]>
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Clocks are an important feature of platforms and have become increasing
complex with time. Most modern SoCs have multiple PLLs and dozens of clock
dividers which distribute clocks to on-chip peripherals.
Some SoC implementations have a clock API which is private to that SoC family,
e.g. Tegra and Exynos. This is useful but it would be better to have a
common API that can be understood and used throughout U-Boot.
Add a simple clock API as a starting point. It supports querying and setting
the rate of a clock. Each clock is a device. To reduce memory and processing
overhead the concept of peripheral clocks is provided. These do not need to
be explicit devices - it is possible to write a driver that can adjust the
I2C clock (for example) without an explicit I2C clock device. This can
dramatically reduce the number of devices (and associated overhead) in a
complex SoC.
Clocks are referenced by a number, and it is expected that SoCs will define
that numbering themselves via an enum.
Signed-off-by: Simon Glass <[email protected]>
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It is common for system reset to be available at multiple levels in modern
hardware. For example, an SoC may provide a reset option, and a board may
provide its own reset for reasons of security or thoroughness. It is useful
to be able to model this hardware without hard-coding the behaviour in the
SoC or board. Also there is a distinction sometimes between resetting just
the CPU (leaving GPIO state alone) and resetting all the PMICs, just cutting
power.
To achieve this, add a simple system reset uclass. It allows multiple devices
to provide reset functionality and provides a way to walk through them,
requesting a particular reset type until is it provided.
Signed-off-by: Simon Glass <[email protected]>
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Add an spl_init() function that does basic init such that board_init_f() can
use simple malloc(), device tree and driver model. Each one is set up only
if enabled for SPL.
Note: We really should refactor SPL such that there is a single
board_init_f() and rename the existing weak board_init_f() functions
provided by boards, calling them from the single board_init_f().
Signed-off-by: Simon Glass <[email protected]>
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Split out the code in fdtdec which finds a number at the end of a string. It
can be useful in other situations.
Signed-off-by: Simon Glass <[email protected]>
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Add an implementation of RC4. This will be used by Rockchip booting but may
be useful in other situations.
Signed-off-by: Simon Glass <[email protected]>
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Add support for a driver which sets up DRAM and can return information about
the amount of RAM available. This is a first step towards moving RAM init
to driver model.
Signed-off-by: Simon Glass <[email protected]>
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It is a common requirement to update some PMIC registers. Provide some
simple convenience functions to do this.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Przemyslaw Marczak <[email protected]>
Acked-by: Przemyslaw Marczak <[email protected]>
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The device tree provides information about which regulators should be
on at boot, or always on. Use this to set them up automatically.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Przemyslaw Marczak <[email protected]>
Acked-by: Przemyslaw Marczak <[email protected]>
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The regulator_autoset() function mixes printf() output and PMIC adjustment
code. It provides a boolean to control the output. It is better to avoid
missing logic and output, and this permits a smaller SPL code size. So
split the output into a separate function.
Also rename the function to have a by_name() suffix, since we would like
to be able to pass a device when we know it, and thus avoid the name
search.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Przemyslaw Marczak <[email protected]>
Acked-by: Przemyslaw Marczak <[email protected]>
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Decide when the regulator is set up whether we want to auto-set the voltage
or current. This avoids the complex logic spilling into the processing code.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Przemyslaw Marczak <[email protected]>
Acked-by: Przemyslaw Marczak <[email protected]>
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It took a little while to figure this out, so this patch adds documentation
to help the next person who needs to do this.
Signed-off-by: Simon Glass <[email protected]>
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Add basic support for MMC, providing a uclass which can set up an MMC
device. This allows MMC drivers to move to using driver model.
Signed-off-by: Simon Glass <[email protected]>
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Add a simple uclass for LEDs, so that these can be controlled by the device
tree and activated when needed. LEDs are referred to by their label.
This implementation requires a driver for each type of LED (e.g GPIO, I2C).
Signed-off-by: Simon Glass <[email protected]>
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Many SoCs have a number of system controllers which are dealt with as a
group by a single driver. It is a pain to have to add lots of compatible
strings and/or separate drivers for each. Instead we can identify the
controllers by a number and request the address of the one we want.
Add a simple implementation of this which can be used by SoC driver code.
Signed-off-by: Simon Glass <[email protected]>
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Add a simple implementaton of register maps, supporting only direct I/O
for now. This can be enhanced later to support buses which have registers,
such as I2C, SPI and PCI.
It allows drivers which can operate with multiple buses to avoid dealing
with the particulars of register access on that bus.
Signed-off-by: Simon Glass <[email protected]>
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This function can be used for testing to manually request a GPIO for use,
without resorting to the legacy GPIO API.
Signed-off-by: Simon Glass <[email protected]>
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Provide a driver-model function to look up a GPIO name. Make the standard
function use it.
Signed-off-by: Simon Glass <[email protected]>
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This parameter is named 'seq' but should be named 'of_offset'.
Signed-off-by: Simon Glass <[email protected]>
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In some rare cases it is useful to be able to locate a device given a device
tree node offset. An example is when you have an alias that points to a node
and you want to find the associated device. The device may be SPI, MMC or
something else, but you don't need to know the uclass to find it.
Add a function to do a global search for a device, given its device tree
offset.
Signed-off-by: Simon Glass <[email protected]>
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In SPL it is sometimes useful to be able to obtain a dump of the current
driver model state. Since commands are not available, provide a way to
directly call the functions to output this information.
Adjust the existing commands to use these functions.
Signed-off-by: Simon Glass <[email protected]>
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This does not actually help any current arch. For x86 it makes it harder
to call (requires stack) and for ARM it has no effect. Drop it.
Signed-off-by: Simon Glass <[email protected]>
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U-Boot uses structures for hardware access so it is important that these
structures are correct. Add a way of asserting that a structure member is
at a particular offset. This can be created using the datasheet for the
hardware.
This implementation uses Static_assert() since BUILD_BUG_ON() only works
within functions.
Signed-off-by: Simon Glass <[email protected]>
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These have been sent upstream but not accepted to libfdt. For now, bring
these into U-Boot to enable fdtgrep to operate. We will use fdtgrep to
cut device tree files down for SPL.
Signed-off-by: Simon Glass <[email protected]>
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Property names are stored in a string table. When a node property is
removed, the string table is not updated since other nodes may have a
property with the same name.
Thus it is possible for the string table to build up a number of unused
strings. Add a function to remove these. This works by building a new device
tree from the old one, adding strings one by one as needed.
Signed-off-by: Simon Glass <[email protected]>
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