ARM: i.MX6 Wandboard: add Documentation ...

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX6 Wandboard: enable Wandboard Quad ...

Extend the DT compatibility check to actually use the Wandboard Quad.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX6 Wandboard Quad: fix PBL UART MUX ...

Three variants of the Wandboard exist: WBSOLO, WBDUAL and WBQUAD.
For all variants, the external serial port is connected to UART1 via
PAD_CSI0_DATA10 (TX) and PAD_CSI0_DATA11 (RX). Unfortunately, the IOMUX
register adresses for this mux differ between i.MX6Q (WBQUAD) and others.
Make the UART IOMUX for PBL compatible for WBQUAD.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX6 Wandboard: dont do MMDC Write Leveling Calibration ...

The hardware requirements to perform a write leveling calibration are
not fulfilled by the Wandboard modules.
IMX6DQRM §44.11.6 "Write leveling Calibration" Note2 states that the first
bit of each data byte group (D0, D8, ..., D56) from memory must be connected
to the same data bus bit on the controller, which is not given on the
Wandboard modules, resulting in unpredictable calib results and breaking the
WBQUAD 2GiB SDRAM setup. Similar restrictions exist for the i.MX6SD.

Remove this calibration and use the MPWLDECTRL defaults.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

watchdog: i.MX: fix i.MX6 reset ...

According to the Errata ERR004346 (WDOG: WDOG SRS bit requires to be written
twice), add another two writes to ensure there must be at least two
writes happen in the same one 32kHz clock period.
Without this two additional writes, the system will not reset always.

Tested with i.MX6Quad and i.MX6 UltraLite

Signed-off-by: Christian Hemp <c.hemp@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Documentation: improve network boot section ...

Signed-off-by: Roland Hieber <r.hieber@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: mvebu: fix size mask for RAM window ...

The size field in the window control register occupies bits 31:16. So
adapt ARMADA_370_XP_DDR_SIZE_MASK accordingly. This fixes detection of
RAM chips smaller than 32 MiB and so probably doesn't affect any
supported machine.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

firmware: altera-serial: add support for Arria 10 ...

Make FPGA specific settings configurable (padding, spi bits per word,
delays) and add Arria 10 support. The Arria 10 compatible is the same
as in the kernel patch "fpga manager: Add altera-ps-spi driver for
Altera FPGAs" (drivers/fpga/altera-ps-spi.c). The Arria 5 compatible
works unchanged.

This patch was tested with Arria 5 and Arria 10.

Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX/WD: setup the watchdog according to its datasheet ...

From earlier SoCs like the i.MX21 up to i.MX7 their datasheets states
after reset the watchdog timer has to be set first prior enabling the
watchdog itself. This change do it this way.

Signed-off-by: Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX6: add Technexion Pico Hobbit support ...

This adds support for the i.MX6UL Technexion Pico Hobbit. The board
comes with different amounts of RAM. We create one image for the 256MB
and one for the 512MB variant.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
   ---
   v1 -> v2: - removed already prepared clock setup
   v2 -> v3: - added phy-reset-post-delay as the support is now available

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: fec: add post PHY reset delay DT property ...

Some PHY require to wait for a bit after the reset GPIO has been
toggled. This adds support for the DT property `phy-reset-post-delay`
which gives the delay in milliseconds to wait after reset.

If the DT property is not given, no delay is observed. Post reset
delay greater than 1000ms are invalid.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: phytec-som-imx6: remove needles enet refclk setup ...

All REF_CLK output setup now is generically prepared for imx6ul. The
handling of the ENET_CLK_SEL (gpr[13]|gpr[14]) bits is not necessary, as
0 is their reset value.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX: setup ENET_TX_CLK_DIR in imx6_init for every imx6ul ...

We generically enable the output of ENET_TX_CLK.
It will be output if ENET_REF_CLK is selected.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ratp: only allow bidirectional consoles ...

Ignore requests to switch to RATP mode in input-only or output-only
consoles.

This actually also avoids segfaulting later on:

    #0  0x0000000000000000 in ?? ()
    #1  0x000000000040b2a4 in console_send (r=<optimized out>, pkt=0x7fffffffd8ec, len=4) at common/ratp.c:102
    #2  0x000000000042ab99 in ratp_behaviour_a (pkt=0x7ffff7298780, ri=0x7ffff72766d0) at lib/ratp.c:530
    #3  ratp_state_machine (pkt=0x7ffff7298780, ri=0x7ffff72766d0) at lib/ratp.c:1384
    #4  ratp_poll (ratp=0x7ffff7277ed8) at lib/ratp.c:1561
    #5  0x000000000042b2ab in ratp_establish (ratp=ratp@entry=0x7ffff7277ed8, active=active@entry=false, timeout_ms=timeout_ms@entry=100) at lib/ratp.c:1645
    #6  0x000000000040b888 in barebox_ratp (cdev=cdev@entry=0x7ffff7212bd0) at common/ratp.c:470
    #7  0x00000000004046c3 in getc_raw () at common/console.c:416
    ...

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ratp: avoid using already freed memory ...

If ratp_establish() fails we would be accessing the ratp_internal
struct after having disposed it.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

docs: move kwboot description to generic mvebu section ...

Expand the generic part about kwboot to the mvebu page and advertise the
parameter -n to make it simpler to boot some machines.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

docs: mvebu can do 2nd stage booting ...

Since commit

	823d08e3e261 ("kwbimage_v1: add support to boot a mvebu image")

barebox can use bootm to load a 2nd barebox image. Update the
documentation accordingly.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: mount: mention file loop mounts in the help text ...

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: add cdev_create_loop and cdev_remove_loop for loop mount option ...

Allow to create a loopback cdev from a file.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Fixed up with:

fs: Makefile: Add parseopt to all builds

parseopt.h was included to fs.c with commit 9248b, but parseopt.o has a
dependency to CONFIG_FS_NFS.

Moved parseopt.o to the default build to eliminate build failures.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sandbox: new --stdinout option to enable a bidirectional console ...

In addition to allowing read-only and write-only consoles with --stdin
and --stdout, we now allow bidirectional read/write consoles with FIFO
files. This is e.g. to allow doing RATP over the FIFO based consoles.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb-nop-xceiv: Add support for 'reset-gpios' binding ...

Cc: cphealy@gmail.com
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gpiolib: Add support for GPIO "hog" nodes ...

Add code to support 'gpio-hog' nodes used in some .dts files in Linux
kernel.

Cc: cphealy@gmail.com
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gpiolib: Add code to support "active low" GPIOs ...

So far this particular aspect of various DT-bindings has been handled
on a per-driver basis. With this change, hopefully, we'll have a
single place to handle necessary logic inversions and eventually
would be able to migrate existing users as well as avoiding adding
redundant code to new drivers.

Cc: cphealy@gmail.com
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gpio-imx: Do not use gpio_set_value() ...

Do not use gpio_set_value() in imx_gpio_direction_output().  We don't
check gpio_set_value's result, so calling imx_gpio_set_value()
directly instead should be as good.

Cc: cphealy@gmail.com
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Acked-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

dts: update to v4.12-rc4 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

dts: update to v4.12-rc3 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

dts: update to v4.12-rc2 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

dts: update to v4.12-rc1 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ratp: avoid using already freed memory ...

If ratp_establish() fails we would be accessing the ratp_internal
struct after having disposed it.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: Makefile: Add parseopt to all builds ...

parseopt.h was included to fs.c with commit 9248b, but parseopt.o has a
dependency to CONFIG_FS_NFS.

Moved parseopt.o to the default build to eliminate build failures.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>