The claim/release bus function must not reset the whole SPI core because
settings regarding wordlen, clock-frequency and so on made by
set_wordlen, set_mode, set_speed get lost with this action. Resulting in
a non-functional SPI.

Without DM the failure didn't came up since after the spi_reset within
claim bus all the setup (wordlen, mode, ...) was called, in DM they are
called by the spi uclass.

We change now the things as following for having a working SPI instance
in DM:

- move the spi_reset(...) to the probe call in DM for having a known
hardware state after probe. Without DM we don't have a probe call, so we
issue the reset as before during the claim_bus call.

- in release bus we just reset the modulctrl to the reset-value (spi-
slave)

Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>

commit 84807922874e03895bbf15c4472a2dcee8fbbd03
("spi: omap3: Skip set_mode, set_speed from claim") did break SPI
support on my AM335x board.

The named commit:

- ignored the responsible arguments (speed, mode)
The set speed/mode function must use the supplied function arguments to
work properly. With this commit we take those arguments and transfer
them to the priv-data.

- used wrong udevice pointer for getting priv data
the udevice-pointer within function argument is already the spi-bus
device, so it is wrong looking here for some parent (ocp-bus in this
case) and getting priv-pointer from there.

Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>

Otherwise the frequency is zero and the clock divider cannot be setup by
'omap3_spi_set_speed' function.

Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>

CS GPIO activation low/high is determinated by the device tree
so we don't need to take in accoung in cs_activate and cs_deactivate

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

drivers/spi/mxc_spi.c:507: undefined reference to `dev_get_addr'
linux-ld.bfd: BFD (GNU Binutils) 2.29.1 assertion fail elf32-arm.c:9509

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

This patch replaced "return 0" with "return status" to fix the
incorrect return value error reported by the coverity.

Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
[jagan: rebased on master]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

Change to use devfdt_get_addr_index() function to get fdt address.

Original code has compilation warning below:

drivers/spi/cadence_qspi.c: In function ‘cadence_spi_ofdata_to_platdata’:
drivers/spi/cadence_qspi.c:297:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  plat->regbase = (void *)data[0];
                  ^
drivers/spi/cadence_qspi.c:298:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  plat->ahbbase = (void *)data[2];
                  ^
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>