We run the system bus from the OSC clock during init, to avoid crashing
the system while reconfiguring the PLLs.
Switch to a more reasonable clock when we are done with this.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some GPIOs are optional, so it might not be an error if we can not find
a DT property. Do the same thing as the Linux kernel and only print a
debug message not an error.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Do not call mtd_ioctl for mtdraw devices. mtd_ioctl will derefence
the priv pointer to a struct mtd_info whereas with mtdraw devices it will be
a struct mtdraw pointer. We do not need ioctls for mtdraw devices, so drop
it instead of fixing it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The mmci implementation uses some specific arm amba functions, so add a
depends on ARM_AMBA.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a devicetree-only driver for to configure the gpmc and its
child devices from dt. Currently only NAND is supported.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We currently have functions to add a device based on function parameters.
This adds the corresponding functions to add resources to a device without
registering the device itself. This is useful to manipulate devices before
registering them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds devicetree probe support for the OMAP gpio ports and
also makes sure the corresponding platform_devices don't get
registered when they are already present from devicetree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We currently only use one slave, so drop for_each_slave and hardcode
slave[0] until we pass the proper context to the functions that makes
this hack unnecessary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of requiring a device pointer, add a functions to select
the pinctrl state based on a device node.
The AM33xx cpsw devicetree description has several subdevices with
pinctrl information attached to them. In barebox we do not handle
the subdevices as distinct devices, so the pinctrl is never configured
correctly and the mdio bus subdevice stops working. This patch makes
it possible to configure the pinctrl without having a device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A function should either return an ERR_PTR or NULL on failure, but not both.
Let get_phy_device() return an ERR_PTR and fix the return checks in mdiobus_scan
and phy_device_connect.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Devicetree probed cpsw devices won't have platform_data, so inline
the fields from slave_data instead of keeping a pointer.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The omap3 and omap4/am33xx spi cores differ in the offset of the
registers in the address space. Instead of encoding this into the
resources use the platform_device_id mechanism. This is done in
preparation for devicetree probe support where the address space
is in the devicetree and can't be adjusted.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Also import related functions gpio_request_one() and
gpio_free_array().
This commit imports code from linux 3.7 as
the more recent linux kernel versions use gpiolib descriptors,
see this commit for details:
commit 372e722ea4dd4ca11c3d04845e11cbc15f32144c
Author: Alexandre Courbot <acourbot@nvidia.com>
Date: Sun Feb 3 01:29:29 2013 +0900
gpiolib: use descriptors internally
Make sure gpiolib works internally with descriptors and (chip, offset)
pairs instead of using the global integer namespace. This prepares the
ground for the removal of the global gpio_desc[] array and the
introduction of the descriptor-based GPIO API.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
See linux.git/include/linux/gpio.h and
linux.git/Documentation/gpio.txt for details.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We need #include "mmci.h" only and not #include <mmci.h>
which don't exists.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The current implementation of the bootloader specification depends on the
hardware name and the name of the device in /dev to match. As the default
hardware name is mciX and the device name is diskY the bootloader spec
cannot be used as is.
This patch implements a way to overwrite the device name similar to what is
possible for the imx-esdhc driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a DT init function to clk-fixed and corresponding CLK_OF_DECLARE
to put it into the DT clock provider table.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a call to of_clk_init right after platform devices have been
populated.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This add barebox versions of of_clk_init for parsing and registering
clock providers from DT. Also, a macro CLK_OF_DECLARE is added, that
allows to put init callbacks into its own section that can be linked
in the binary.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a callback function to read the current state of a GPIOs
in/out direction.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds some more printf information to gpiolib command, like the
gpiochip handling a specific gpio. Also, current direction and value
of the gpio are printed, if the gpiochip provides the corresponding
callbacks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This disables LEDs that have a trigger function assigned right before
the trigger is installed. As the trigger was parsed before the LED has
been registered, also swap LED registration and trigger parsing.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
"%d" in format string requires a signed integer.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
No functional change, just reorder the initialization of
the different offset/size members of fdt_header in increasing
order to make it easier to read.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add support to configure the active framebuffer for the kernel through
device tree.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Use the mailbox driver to set up a framebuffer based on the firmware
configuration.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add support for framebuffers with noncontiguous horizontal lines.
Video drivers can set this value if the hardware requires it.
In case a driver does not set it, the current value of
xres * (bpp / 8) is used instead.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
i.MX5x OTG port is hardwired to the internal UTMI PHY, so having
this configurable makes no sense and helps using this port with DT.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When probing spi bus masters from devicetree they got a bus_num
of -1. This works with a single bus master only since all bus masters
had the same bus_num. Detect this and dynamically assign a valid
bus_num.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There is no much sense in having the pinctrl drivers be user selectable
as all arches using on of them already selects the right one.
So to avoid presenting the user with the choice to enable unrelated
pinctrl drivers or pushing lots of dependencies into the Kconfig just
drop the configurability.
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since the mainline kernel now has its own dr_mode and phy_type DT-options
for setting modes of USB ports, do these kernel parameters compatible by
removing "barebox" prefix.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Right now we do not support persistent names for mtd devices. The
base name can be passed to add_mtd_device, but this is always appended
with a dynamic number. With this patch add_mtd_device takes a device_id
argument which can be used to create a mtd device with an exact name.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The name of the raw device is mtdraw<num> which is inconsistent to other
mtd devices which are named mtd<num>.<partname>. Rename it to mtd<num>.raw.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
KSZ8031 is similar to KSZ8021. It can use the same functions.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some controller such as the ARM AMBA pl181 can not handle more than 16bits
data length request.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Switch from local mailbox code to using the newly created clock device.
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
RPi's mailbox driver is used early and it needs clock functions to
handle timeouts.
Promote to a core_initcall().
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of populating an extra list containing all phandles just iterate
over the whole tree. This is done as preparation for more dynamic devicetrees
where parts are loaded at runtime. Here we don't want to keep the list of
phandles in sync.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Host with inoperable ULPI able to bring the system into an
infinite loop. The patch adds error checking during initialization
to avoid this.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
check the 4 mac address register and return at the first valid
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With commit c2ef47887 mci.f_max default value is
only set when pdata is available.
Fix this with always setting the mci.f_max default
value and overrite it when pdata available.
Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With this the verbosity of barebox can be controlled during runtime
using the 'loglevel' globalvar.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A printf in the driver should be dev_* and contain useful information.
Both is not the case, remove it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The driver didn't work well with at24 driver. NACKS are lost.
Errors are lost in isr due to the local variable err. Also we didn't wait for
bus free in omap_i2c_xfer_msg.
Fix issues and get other improvements from linux kernel
Tested on OMAP4 and AM335x
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Check for valid period size before calling ops->config. This fixes
the pxa driver which otherwise does a division by zero. While at
it, also check for duty_ns being smaller or equal to period_ns.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
The SoCFPGA currently has all clocks described in the devicetree which
makes common clock support a straight forward task.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
as today qemu does not support phy, it will return always 0x0 to any read
on the mii bus. So the phy_id is 0 and the link is donw.
To have the norwork running on versatilpb & other qenu board for the link up
at 100Mbps.
Only enable if qemu_fixup is set.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this will be done at activation
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
None of the driver make the difference between STDOUT and STDERR.
So we just need to check if putc or getc are filled in the console_device
save 32 bytes on versatilepb
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we can specify the devname in the board
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
At least i.MX53 has errata ENGcm12360:
Occurs when a pending command which issues busy is completed.
For a command with R1b response, the proper software sequence
is to poll the DLA for R1b commands to determine busy
state completion. The DLA polling is not working properly for
the ESDHC module. This is relevant for all eSDHC ports (eSDHC1-4 ports)
DLA bit in PRSSTAT register cannot be
polled to wait for busy state completion.
Updated block guide to reflect that DLA is not applicable to detect
busy state, instead, should poll bit 24 in PRSSTAT register (DLSL[0] bit)
to check that wait busy state is over.
Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
since the switch to common clock, ethernet driver doesn't works and
and access to the network leads to :
eth0: Read MDIO failed...
unable to handle NULL pointer dereference at address 0x000000c7
The problem is that bit 31 (SLEEP) of register HW_CLKCTRL_ENET is kept
to its default value (1) which means : "put Ethernet block in sleep mode.
CLK_H_MAC0(1), CLK_H_MAC0(1)_S, and CLK_ENET0(1)_TX are gated off.
Ethernet can be wakeup remotely in sleep mode"
In that case the FEC don't get its clock.
This patch fix the problem by toggling this bit when FEC's clock is
enabled.
Tested on i.MX28EVK.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
the check is wrong as when the clock rate is correctly set
the function will return 0.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
when the bootmode is different than NAND (USB for example), the
GPMI clock is not enabled thus we can't probe a NAND flash.
Tested on an i.MX28
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
since the switch to common clock, SPI driver reports :
MXS: Timeout resetting block via register 0x80014000
mxs_spi mxs_spi2: MXS SPI: Timeout waiting for start
The reason is that the clock is not enabled anywhere in
the driver.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this fix :
drivers/serial/serial_auart.c:49:22: fatal error: mach/mxs.h: No such file or directory
and
drivers/serial/serial_auart.c: In function 'auart_serial_init_port':
drivers/serial/serial_auart.c:174:2: warning: implicit declaration of function 'stmp_reset_block' [-Wimplicit-function-declaration]
only compile tested ATM
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this fix :
drivers/spi/mxs_spi.c:29:22: fatal error: mach/mxs.h: No such file or directory
and
drivers/spi/mxs_spi.c: In function 'mxs_spi_setup':
drivers/spi/mxs_spi.c:102:2: error: too few arguments to function 'stmp_reset_block'
include/stmp-device.h:21:12: note: declared here
only compile tested ATM
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of hardcoding the alternate/enhanced descriptor layout make
it configurable during runtime. This is based on the value of the
enh_desc variable which is currently hardcoded to zero. This should
be configurable via device_id in the future. Since currently we have
no in tree user of this driver this currently doesn't hurt.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Import of_find_node_by_type from Linux drivers/of/base.c -
commit id d8dfad3.
This function retrieves a node pointer based on the "device_type"
property of the node.
This is used by device tree update functions in PPC support.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
commit f64ed12b accidentally swap fclk_rate from am33xx and omap3.
Revert this change.
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add function for indirect access of the mmd registers, based on linux.
phy_read_mmd_indirect
phy_write_mmd_indirect
Also clean some private mmd functions
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The driver is already capable of 8 bit buswidth support, so advertise
it to actually make use of it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
According to the SD Host Controller Specification Version 3.00, the ADMA error
status bit is on the wrong bit. Fix this.
While at it, add the missing standard error status bits.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds of_clk_providers for core clocks and clock gates found on
Marvell MVEBU SoCs (Armada 370, Armada XP, Dove, and Kirkwood).
It is based on Linux clock providers with clock flags removed, as they
are not used on Barebox.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of calling of_get_model() in barebox_get_model() add a
barebox_set_model() and use it to set the boardinfo once it's
available from the devicetree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Otherwise only the internal DT is modified, not necessarily the one passed
to the kernel.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_get_tree_max_phandle - get the maximum phandle of a tree. Needed for
creating new phandles without conflicts.
of_node_create_phandle - create a phandle for a node which doesn't have one.
of_find_node_by_alias - find a node by alias name
of_find_node_by_path_or_alias - find a node by full path or alias name
of_find_root_node - find the root node for a given device node
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In merge mode a property may be overwritte with new values. When
this happens the length has to be adjusted.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Lucas Stach
Lucas Stach
Sascha Hauer
Alexander Aring
Rostislav Lisovy
Antony Pavlov
Uwe Kleine-König
Sebastian Hesselbarth
Alexander Shiyan
Andre Heider
张忠山
Markus Pargmann
Jean-Christophe PLAGNIOL-VILLARD
Jan Weitzel
Teresa Gámez
Dmitry Smagin
Markus Niebel
Eric Bénard
Renaud Barbier
Steffen Trumtrar
David Jander