Hans de Goede [Thu, 18 Jun 2015 16:21:33 +0000 (18:21 +0200)]
sunxi: musb: Stop treating not having a vbus-det gpio as an error
On some boards the otg is wired up in host-only mode in this case we
have no vbus-det gpio.
Stop logging an error from sunxi_usb_phy_vbus_detect() in this case, and
stop treating sunxi_usb_phy_vbus_detect() returning a negative errno, as
if a charger is plugged into the otg port.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Hans de Goede [Wed, 17 Jun 2015 15:44:58 +0000 (17:44 +0200)]
sunxi: musb: Use device-model for musb host mode
Modify the sunxi musb glue to use the device-model for musb host mode.
This allows using musb in host mode together with other host drivers
such as ehci / ohci, which is esp. useful on boards which use the
musb controller in host-only mode, these boards have e.g. an usb-a
receptacle or an usb to sata converter attached to the musb controller.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Hans de Goede [Wed, 17 Jun 2015 13:49:26 +0000 (15:49 +0200)]
sunxi: musb: Move musb config and platdata to the sunxi-musb glue
Move the musb config and platdata to the sunxi-musb glue, which is where
it really belongs. This is preparation patch for adding device-model
support for the sunxi-musb-host code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Hans de Goede [Sun, 14 Jun 2015 15:40:37 +0000 (17:40 +0200)]
sunxi: musb: Add id pin support
When in host mode check if there is a host cable inserted into the otg
port by checking the id pin. If there is no host cable return an error to
make usb_lowlevel_init() exit early, rather then waiting for 1 second
for a device which will never show up.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Hans de Goede [Wed, 17 Jun 2015 18:54:07 +0000 (20:54 +0200)]
sunxi: Enable CMD_USB and USB_STORAGE by default on sunxi
Start using the new Kconfig options which are available for these now,
and simply always enable them by selecting them as sunxi builds always
include USB support.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Reviewed-by: Simon Glass <sjg@chromium.org>
Tom Rini [Tue, 30 Jun 2015 20:51:15 +0000 (16:51 -0400)]
sunxi: Update selects in arch/arm/Kconfig for DM conversions
With certain features being convert to DM now we want sunxi to default
to having DM enabled for ETH/SERIAL and USB in some cases.
Cc: Hans de Goede <hdegoede@redhat.com> Cc: Ian Campbell <ijc@hellion.org.uk> Signed-off-by: Tom Rini <trini@konsulko.com>
[hdegoede@redhat.com: Also select CONFIG_USB for all sunxi builds] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Reviewed-by: Simon Glass <sjg@chromium.org>
sunxi: spl: Remove redundant check from `board_mmc_init` for signature
Remove the boot signature check from board_mmc_init() in spl mode, as it
is already done in spl_boot_device() in this case, and update the comments
to reflect this.
Signed-off-by: Daniel Kochmański <dkochmanski@turtle-solutions.eu> CC: Roy Spliet <r.spliet@ultimaker.com> Cc: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: Disable the check only for SPL instead of always] Acked-by: Hans De Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: spl: Detect at runtime where SPL was read from
Make possible using a single `u-boot-sunxi-with-spl.bin` binary for both NAND
memory and SD card. Detection where SPL was read from is implemented in
`spl_boot_device`.
Signed-off-by: Daniel Kochmański <dkochmanski@turtle-solutions.eu> CC: Roy Spliet <r.spliet@ultimaker.com> Cc: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: Some small coding style fixes] Acked-by: Hans De Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: Create helper function veryfing valid boot signature on MMC
This patch extracts checking for valid SD card "eGON.BT0" signature from
`board_mmc_init` into function `sunxi_mmc_has_egon_boot_signature`.
Buffer for mmc sector is allocated and freed at runtime. `panic` is
triggered on malloc failure.
Signed-off-by: Daniel Kochmański <dkochmanski@turtle-solutions.eu> CC: Roy Spliet <r.spliet@ultimaker.com> Cc: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: Small bugfix to make it work for devs other then mmc0] Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
mmc: Protect `mmc_initialize` from initialising mmc multiple times
`mmc_initialize` might be called multiple times leading to the mmc-controllers
being initialised twice, and initialising the `mmc_devices` list head twice
which may lead to memory leaks.
Signed-off-by: Daniel Kochmański <dkochmanski@turtle-solutions.eu> CC: Roy Spliet <r.spliet@ultimaker.com> Cc: Ian Campbell <ijc@hellion.org.uk> CC: Pantelis Antoniou <panto@antoniou-consulting.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: UniPhier: add environment sets for non-FIT Linux boot
Currently, the environment variables "norboot" and "nandboot" only
work with CONFIG_FIT, but we do not want to depend on CONFIG_FIT to
boot the kernel.
This commit adds environments useful for booting Linux with separate
uImage + ramdisk + DTB.
Stefan Roese [Wed, 25 Mar 2015 12:35:15 +0000 (13:35 +0100)]
arm: mvebu: db-88f6820: Add SPL support with DDR init code
This patch adds SPL support for the Marvell DB-88F6820-GP board.
With this change, the bin_hdr from the original Marvell U-boot
is not needed any more on this board. The sources from bin_hdr
(SERDES/PHY and DDR setup) are now integrated in mainline
U-Boot. And this patch enables them for this board.
Stefan Roese [Thu, 26 Mar 2015 14:36:56 +0000 (15:36 +0100)]
arm: mvebu: Add Armada 38x DDR3 training code from Marvell bin_hdr
This patch adds the DDR3 setup and training code taken from the Marvell
U-Boot repository. This code used to be included as a binary (bin_hdr)
into the Armada A38x boot image. Not linked with the main U-Boot. With this
code addition and the serdes/PHY setup code, the Armada A38x support
in mainline U-Boot is finally self-contained. So the complete image
for booting can be built from mainline U-Boot. Without any additional
external inclusion.
Note:
This code has undergone many hours (days!) of coding-style cleanup and
refactoring. It still is not checkpatch clean though, I'm afraid. As the
factoring of the code has so many levels of indentation that many lines
are longer than 80 chars.
Stefan Roese [Wed, 25 Mar 2015 11:51:18 +0000 (12:51 +0100)]
arm: mvebu: drivers/ddr: Move Armada XP DDR init code into new directory
With the upcoming addition of the Armada 38x DDR support, which is not
compatible to the Armada XP DDR init code, we need to introduce a new
directory infrastructure. To support multiple Marvell DDR controller.
This will be the new structure:
drivers/ddr/marvell/axp
Supporting Armada XP (AXP) devices (and perhaps Armada 370)
drivers/ddr/marvell/a38x
Supporting Armada 38x devices (and perhaps Armada 39x)
Stefan Roese [Mon, 20 Apr 2015 07:31:27 +0000 (09:31 +0200)]
arm: mvebu: Add Armada 38x SERDES / PHY init code from Marvell bin_hdr
This code is ported from the Marvell bin_hdr code into mainline
SPL U-Boot. It needs to be executed very early so that the devices
connected to the serdes PHY are configured correctly.
Stefan Roese [Mon, 20 Apr 2015 07:28:12 +0000 (09:28 +0200)]
arm: mvebu: serdes: Move Armada XP SERDES / PHY init code into new directory
With the upcoming addition of the Armada 38x SPL support, which is not
compatible to the Armada XP SERDES init code, we need to introduce a new
directory infrastructure. So lets move the AXP serdes init code into
a new directory. This way the A38x code can be added in a clean way.
Stefan Roese [Fri, 24 Apr 2015 08:49:11 +0000 (10:49 +0200)]
arm: mvebu: Disable MMU before changing register base address
Only with disabled MMU its possible to switch the base register address on
Armada 38x. Without this the SDRAM located at >= 0x4000.0000 is also not
accessible, as its still locked to cache.
Stefan Roese [Fri, 17 Apr 2015 16:12:41 +0000 (18:12 +0200)]
arm: mvebu: Use default reg base address for SPL on A38x
On A38x switching the regs base address without running from
SDRAM doesn't seem to work. So let the SPL still use the
default base address and switch to the new address in the
mail u-boot later.
Stefan Roese [Wed, 15 Jul 2015 13:36:52 +0000 (15:36 +0200)]
arm: mvebu: Call timer_init early before PHY and DDR init
Without calling timer_init(), the xdelay() functions return immediately.
We need to call timer_init() early, so that these functions work and
the PHY and DDR init code works correctly.
Signed-off-by: Stefan Roese <sr@denx.de> Cc: Anton Schubert <anton.schubert@gmx.de> Cc: Luka Perkov <luka.perkov@sartura.hr>
Anton Schubert [Wed, 15 Jul 2015 12:50:05 +0000 (14:50 +0200)]
arm: mvebu: add Armada XP SATA support
This patch initializes the SATA address windows on Armada XP and
allows it to work with the existing mvsata_ide driver.
It also adds the necessary configuration for the db-mv784mp-gp board.
Signed-off-by: Anton Schubert <anton.schubert@gmx.de> Tested-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr>
linux_compat: move vzalloc() to header file as an inline function
The vzalloc(size) is equivalent to kzalloc(size, 0). Move it to
include/linux/compat.h as an inline function in order to avoid the
function call overhead.
x86: delete unneeded declarations of disable_irq() and enable_irq()
These two declarations in arch/x86/include/asm/interrupt.h conflict
with ones in include/linux/compat.h, so x86 boards cannot include
<linux/compat.h>.
The comment /* arch/x86/lib/interrupts.c */ is bogus now, and we do
not see any definitions of disable_irq() and enable_irq() in there.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
Simon Glass [Mon, 6 Jul 2015 22:47:55 +0000 (16:47 -0600)]
net: Allow drivers to return -ENOSYS with the write_hwaddr() method
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.
Simon Glass [Mon, 6 Jul 2015 22:47:54 +0000 (16:47 -0600)]
dm: usb: eth: Add driver-model support to the asix driver
This USB Ethernet driver is quite widely use. Allow it to work with
CONFIG_DM_ETH enabled. Most of the code remains common but there is a new
packet receive flow which is handled specially.
Simon Glass [Mon, 6 Jul 2015 22:47:53 +0000 (16:47 -0600)]
dm: usb: Add driver-model support to ehci-pci
Support driver model in this driver. This uses the normal USB driver search
mechanism. Any EHCI controllers will be set up as they are found during
usb_init().
Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
Simon Glass [Mon, 6 Jul 2015 22:47:51 +0000 (16:47 -0600)]
dm: usb: Adjust the USB_DEVICE() macro naming
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.
Simon Glass [Mon, 6 Jul 2015 22:47:50 +0000 (16:47 -0600)]
dm: usb: eth: Support driver model with USB Ethernet
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 <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
Simon Glass [Mon, 6 Jul 2015 22:47:49 +0000 (16:47 -0600)]
dm: eth: Avoid blocking on packet reception
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.
Simon Glass [Mon, 6 Jul 2015 22:47:48 +0000 (16:47 -0600)]
dm: usb: Avoid using USB ethernet with CONFIG_DM_USB and no DM_ETH
If driver model is used for Ethernet then USB Ethernet does not build. This
can be made to work with driver model is used for USB also. Add #ifdef logic
to make this clear when building.
Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de>
Simon Glass [Mon, 6 Jul 2015 22:47:44 +0000 (16:47 -0600)]
dm: pci: Add support for PCI driver matching
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 <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Hans de Goede [Wed, 17 Jun 2015 19:33:58 +0000 (21:33 +0200)]
musb: Add device-model support to the musb-host u-boot glue
Add device-model support to the musb-host u-boot glue, note this only
adds device-model support to the musb-core glue code, it does not add
support for device-model to any of the SoC specific musb glue code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 17 Jun 2015 19:33:54 +0000 (21:33 +0200)]
musb: Allow musb_platform_enable to return an error code
Allow musb_platform_enable to return an error code and propagate it up to
usb_lowlevel_init().
This allows moving the checks for an external vbus being present to be
moved from platform_init to platform_enable, so that the user can unplug a
charger, plug in a host adapter with a usb-device, do a "usb reset" and
have things working.
This also allows adding a check for the id-pin to platform_enable, so that
it can short circuit the 1s delay in usb_lowlevel_init() when no host cable
is plugged in and thus waiting for a device to show up is useless.
Note that all the changes to code shared with the kernel are wrapped in
the kernel.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 17 Jun 2015 19:33:53 +0000 (21:33 +0200)]
dm: usb: Do not assume that first child is always a hub
On some single port (otg) controllers there is no emulated root hub, so
the first child (if any) may be one of: UCLASS_MASS_STORAGE,
UCLASS_USB_DEV_GENERIC or UCLASS_USB_HUB.
All three of these (and in the future others) are suitable for our
purposes, remove the check for the device being a hub, and add a check to
deal with the fact that there may be no child-dev.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 17 Jun 2015 19:33:52 +0000 (21:33 +0200)]
dm: usb: Allow usb host drivers to implement usb_reset_root_port
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 <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 1 Jul 2015 18:53:01 +0000 (20:53 +0200)]
dm: usb: Rename usb_find_child to usb_find_emul_child
Now that we unbind usb devices from usb_stop() usb_find_child() is
only necessary to deal with emulated usb devices.
Rename it to make this clear and add a #ifdef to make it a nop in
other cases.
Note the #ifdef turns usb_find_emul_child() into a nop, rather then not
building it and adding another #ifdef to the caller, this is done this way
because adding a #ifdef to the caller is somewhat hairy.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 1 Jul 2015 18:53:00 +0000 (20:53 +0200)]
dm: usb: Use device_unbind_children to clean up usb devs on stop
On an usb stop instead of leaving orphan usb devices behind simply remove
them.
The result of this commit is best seen in the output of "dm tree" after
plugging out an usb hub with 2 devices plugges in and plugging in a keyb.
instead, before this commit the output would be:
Notice the non active usb_hub child and its 2 non active children. The
first child being non-active as in this example also causes usb_get_dev_index
to return NULL when probing the first child, which results in the usb kbd
code not binding to the keyboard.
With this commit in place the output after swapping and "usb reset" is:
Hans de Goede [Wed, 17 Jun 2015 19:33:50 +0000 (21:33 +0200)]
dm: usb: Fix "usb tree" output
last_child was abused by the old usb code to first store 1 if the
usb_device was not the root of the usb tree, and then later on re-used
to store whether or not the usb_device is actually the last child.
The dm-usb code was always setting it to actually reflect the last-child
status which is wrong for the last child leading to output like this:
USB device tree:
1 Hub (12 Mb/s, 100mA)
| ALCOR USB Hub 2.0
|
| 2 Mass Storage (12 Mb/s, 100mA)
| USB Flash Disk 4C0E960F
|
+-3 Human Interface (1.5 Mb/s, 100mA)
SINO WEALTH USB Composite Device
Instead of this:
USB device tree:
1 Hub (12 Mb/s, 100mA)
| ALCOR USB Hub 2.0
|
+-2 Mass Storage (12 Mb/s, 100mA)
| USB Flash Disk 4C0E960F
|
+-3 Human Interface (1.5 Mb/s, 100mA)
SINO WEALTH USB Composite Device
This commit fixes this by first checking that the device is not root,
and then setting last_child. This commit also updates the old code to not
abuse the last_child variable to store the root check result.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 17 Jun 2015 19:33:48 +0000 (21:33 +0200)]
usb: Add an usb_device parameter to usb_reset_root_port
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 <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Hans de Goede [Wed, 17 Jun 2015 19:33:45 +0000 (21:33 +0200)]
usb: Drop device-model specific copy of usb_legacy_port_reset
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 <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
Currently, DM_FLAG_ACTIVATED is set twice; before calling
uclass_pre_probe_device() and again before calling drv->probe().
It looks like Simon's intention is the first one.
The DM_FLAG_ACTIVATED was moved twice, by commit 02eeb1bbb174
(dm: core: Mark device as active before calling its probe()
method), and then by commit 206d4d2b4b30 (dm: core: Mark device
as active before calling uclass probe() methods).
The first marking was added by the last move.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
dm: change dm_warn() message into debug() in uclass_add()
The command "dm uclass" tries to display all the UClasses, but
some of them might be disabled by Kconfig.
The function do_dm_dump_uclass() iterates over all the UClass IDs
and calls uclass_get() for each of them. Then, it displays annoying
message "Cannot find uclass for id ..." every time it fails to get
the UClass.
As a result, we get much noisier log for the "dm uclass" command.
Cannot find uclass for id 1: please add the UCLASS_DRIVER() ...
Cannot find uclass for id 2: please add the UCLASS_DRIVER() ...
Cannot find uclass for id 3: please add the UCLASS_DRIVER() ...
Cannot find uclass for id 4: please add the UCLASS_DRIVER() ...
Cannot find uclass for id 5: please add the UCLASS_DRIVER() ...
Cannot find uclass for id 6: please add the UCLASS_DRIVER() ...
This commit suppresses these warnings.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
Simon Glass [Mon, 6 Jul 2015 18:54:36 +0000 (12:54 -0600)]
dm: test: Add a size to each reg property
Each sandbox peripheral should have a size as well as a base address. This
is required for regmaps to work, so make this change for all nodes that have
an address.
Simon Glass [Mon, 6 Jul 2015 18:54:33 +0000 (12:54 -0600)]
led: Return -ENODEV if the LED device cannot be found
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.
Simon Glass [Mon, 6 Jul 2015 18:54:28 +0000 (12:54 -0600)]
sandbox: Add a warm and cold reset driver
Add drivers for sandbox. One can only perform a warm reset (which does
nothing). The other can perform a cold reset or a power reset (the
latter will quit U-Boot). These can be used for testing the reset uclass.
Simon Glass [Mon, 6 Jul 2015 18:54:22 +0000 (12:54 -0600)]
dm: Add platform data advice and admonishment
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.
Simon Glass [Tue, 23 Jun 2015 21:39:15 +0000 (15:39 -0600)]
dm: Add a clock uclass
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.
Simon Glass [Tue, 23 Jun 2015 21:39:13 +0000 (15:39 -0600)]
dm: Add a system reset uclass
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.
Simon Glass [Tue, 23 Jun 2015 21:39:12 +0000 (15:39 -0600)]
mkimage: Set up a file size parameter and keep it updated
Some functions called by mkimage would like to know the output file size.
Initially this is the same as the input file size, but it may be affected by
adding headers, etc.
Add this information to the image parameters.
Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Simon Glass [Tue, 23 Jun 2015 21:39:10 +0000 (15:39 -0600)]
dm: spl: Allow device tree/driver model in board_init_f()
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().
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