If the SPL is to be used for Falcon mode then we need to make sure it
configures basic GPIO (iomux, padconf, and default output levels).

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Now that uart and i2c setup functions have been moved to common.c we can
use these and remove code duplication.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Avoid requiring board-model and probe pmic by its i2c address.
This is in preparation for being able to call pmic_setup() from SPL
and not need board type.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Move the code that disables the GSC boot watchdog into gsc.c

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Move shared functions used by both SPL and U-Boot to common.c:
 - setup_iomux_uart() and uart pad config
 - gpio pad config

In the process also moved the following to common.c in preparation for
calling it from the SPL:
 - split i2c setup into a shared function
 - move pmic init to setup_pmic() function to call directly from
   power_init_board()
 - split gpio setup into early (iomux and default pin config)
   and late (output configuration based on env)

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

PCI enumeration occurs early, before we fully configure our GPIO's. Make
sure we steer the MSATA/PCI mux to PCI in board_init to ensure PCI is
selected before enumeration.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The re-assignment of pcie_rst gpio for GW522x needs to occur earlier, before
the PCI subsystem calls the toggle funciton.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

mxc_serial supports DM so lets use it.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Prior to using a gpio a call to gpio_request() should be called to register
it with the gpio subsystem.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Display what device the SPL will fetch uboot.img from

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

This fixes a regression caused by e25fbe3f
(gw_ventana: Move the DCD settings to spl code)

The clock gating must be setup prior to calling arch_cpu_init(). Without this
booting to SD (directly via eFuse or via bmode) will hang.

Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>

This commit combines catching missing memory and calibration data into
one if() block. It further prints pertinent information in determining
why the failure occurred.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Add memory configuration for an IMX6SDL + 1GB density DRAM.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The initial revision of the GW551x does not connect enough signals between
the HDMI receiver and the IMX6 CSI for 16bit capture mode necessary for
yuv422smp capture. Future revisions will, but for the initial rev force it
to yuv422bt656 mode which requires an 8bit video data bus.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The HDMI receiver used on the GW54xx and GW551x has a 16bit video data bus
interconnect between it and the IMX6 CSI. This can be used in two different
modes, each having advantages and disadvantages. Allow the hdmiinfmt env
var to specify which format is desired (yuv422smp or yuv422bt656).

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The GW522x is functionally the same as a GW52xx except for PCIE_RST#
GPIO. Add a DT fixup to change this gpio upon bootup.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

This adds information about the Gateworks System Controller to the gsc command
such as the firmware version, firmware CRC and status of the GSC watchdog
(if its enabled and if its tripped).

Additionally the 'gsc wd' command can be used to enable or disable the
watchdog with the following usage:
 gsc wd enable [30|60]
 gsc wd disable

Note that the GSC registers are battery-backed by the GSC coincell so once
eanbled, they remain enabled across power-cycles or until either the GSC
firmware has been updated or FLASH has been re-programmed by the Gateworks
JTAG adapter.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Configure kernel device-tree for display from env var. This is useful
to specify the display present when the device-tree supports multiple
non-detectable display configurations.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Add LVDS support for two LVDS LCD displays:
 DLC-700JMGT4 - 7" 1024x600
 DLC-800FIGT3 - 8" 1024x768

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Certain older kernels in use by some customers erroneously define a uart3
for GW54xx with a pinmux that conflicts with NAND. This will remove
that node to avoid such conflicts.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The calibration data for dual 2Gb density chips can be used for a single 2Gb
density chip.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Updated 16bit DDR calibration using values obtained from running the
i.MX6 DDR Stress Test tool over a set of boards over full operationg
temperature.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The GW551x-A revision does not have the CSI0_DATA_EN pin connected, therefore
we need to make sure that signal is not muxed to the CSI_DATA_EN signal
internally and do so by steering it to the unused GPIO5_IO20.

We do this so that the kernel device-tree can properly define the signal for
RevB and beyond boards that do have this hooked up properly and require it.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Add a new voltage rail added in various -C revision PCB's.

Additionally make VDD_CORE, VDD_SOC, and VDD_IO2 common as all Ventana boards
have those.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Certain OS bootscripts need to know how much memory a board has to adjust
kernel parameters (namely Android). This allows those boards to determine
mem size in MB.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The min/max of each depends not only on board but on CPU. Simplify by removing
this rarely needed and difficult to maintain feature and just display the
rails and their values.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The GW551x is a small form factor board based on the IMX6 SoC that includes:
 * up to 512MB DDR3 memory
 * up to 2GB NAND flash
 * 1x miniPCIe socket (with USB)
 * HDMI out (micro-HDMI)
 * HDMI in (micro-HDMI)
 * TTL level I/O (supported by GW16111 breakout board):
  * I2C
  * 2x UART
  * CAN
  * 2x DIO (GPIO/PWM)
  * USB OTG

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

A board level errata causes the IMX6 watchdog to be unstable on the GW51xx
RevA and RevB boards which can cause the watchdog to trip extremely early
(under 5seconds) under certain operating conditions. Disable the watchdog
node in the device-tree to work around this issue.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The IMX6 Datasheets specifies that when the IMX6 LDO is enabled
(internal Anatop LDO's for VDD_ARM, VDD_SOC, and VDD_xPU) you need to
provide 1350mV on VDD_ARM_IN and VDD_SOC_IN for IMX6Q@1GHz (Automotive)
and 1275mV for IMX6DL@800MHz (Industrial). While we are still about 50mV
shy on the IMX6Q operating at 1GHz we set it to the max we can and leave it
up to the kernel to implement a regulator driver for the LTC3676 and put
the LDO's in bypass mode which allows us to drop the voltages by 125mV
respectively.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Enable fast-exit precharge mode necessary for some DDR3 devices being
used on Ventana boards.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

The GW52xx has a MUX that can direct front-panel USB OTG to one of the
miniPCIe sockets (for use with a cellular modem for example). Use hwconfig
to steer this.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Gateworks Ventana boards don't all use IMX6 FEC, so lets define default
ethprime based off the first detected device.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

Otherwise NAND booting is likely to fail. Since this disables the NAND related
clocks and SPL can't load the main U-Boot from NAND.

This problem was introduced with this patch:

e25fbe3f (gw_ventana: Move the DCD settings to spl code)

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Tim Harvey <tharvey@gateworks.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>

gw_ventana can boot from SPI or NAND and both of these interfaces boot from
the same 0x400 offset.

This means that we could simplify the code and replace the custom gw_ventana.cfg
with the generic spl_sd.cfg, as it provides the same boot offset of 0x400.

Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>