ARM: mx28: add auart3 2 pins pinmux to imx28.dtsi

Add auart3 2 pins configuration on its main pads

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: mx28: add auart4 2 pins pinmux to imx28.dtsi

Add auart4 2 pins configuration on SSP3 pads

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: dts: cfa10036: Change the OLED display to SSD1306

The SSD1307 was used in an early prototype that will never get
distributed. The final board now has a SSD1306 instead, that has its own
power generation unit and thus doesn't need any PWM. The panel attached
to it also changed.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: cfa10036: dt: Change i2c0 clock frequency

The OLED display can work faster. Change the i2c controller clock
frequency to remove the tearing effect that can be seen on the display.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: mxs: Fix UARTs on M28EVK

Make use of RTS/CTS lines on AUART0 and register AUART1 and AUART2
which are routed onto a pin header.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: dts: apf28dev: Add touchscreen support for APF28dev

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: cfa10036: Add USB0 OTG port

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: cfa10049: Switch the chip select pin of the LCD controller

The early prototypes had the chip select pin for the LCD controller
wired on the GPIO 3-23, while the production run of the CFA-10049 have
this chip select on the GPIO 3-5.

Signed-off-by: Brian Lilly <brian@crystalfontz.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: mxs: dt: Add the Crystalfontz CFA-10055 device tree

The CFA-10055 is yet another breakout board for the CFA-10036, and is
basically a CFA-10037, with the screen and LCD controller found on the
CFA-10049.

Signed-off-by: Brian Lilly <brian@crystalfontz.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: mxs: dt: Add Crystalfontz CFA-10057 device tree

The CFA-10057 is a breakout board for the CFA-10036 that has Ethernet,
USB and a 4.3" LCD screen on it.

Signed-off-by: Brian Lilly <brian@crystalfontz.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: i.MX5: Allow DT clock providers

Currently clock providers defined in the DT are not registered
on i.MX5 platforms since of_clk_init() is not called.

This is not a problem for the SOC's own clocks, which are registered
in code,  but prevents the DT being used to define clocks for external
hardware.

Fix this by calling of_clk_init() and actually using the DT to obtain
the 4 SOC fixed clocks.
These are already defined in the DT but were previously just used to
manually obtain the rate.

Fall back to the old scheme for non DT platforms.

Since the same method may be useful for other i.MX platforms
implement the imx_obtain_fixed_clock() function in common code.

Actually changing other i.MX platforms to use this should be done
later by someone with access to the appropriate hardware.

Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: i.MX6: add i.MX6 specific L2 cache configuration

To improve the performance and power consumption add an i.MX6
specific L2 cache initialization.

This configuration is taken from Freescale's kernel patch

"ENGR00153601 [MX6]Adjust L2 cache parameter" [1]

with two additional improvements:

a) The L2X0_POWER_CTRL has only the two bits we set. So no need
   to read the register before. Remove the register read done
   in Freescale's patch.

b) In the L2X0_PREFETCH_CTRL register, besides the double linefill (bit[30]),
   additionally enable the instruction and data prefetch (bit[29-28]).

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

[1] http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/commit/arch/arm/mach-mx6/mm.c?h=imx_3.0.35_12.09.01&id=814656410b40c67a10b25300e51b0477b2bb96d1
ARM: i.MX6: clk: add i.MX6 DualLite differences

The CCM_CBCMR register (address 0x02C4018) has different meaning
between the i.MX6 Quad/Dual and the i.MX6 Solo/DualLite.

Compared to the i.MX6 Quad/Dual, the CCM_CBCMR register in the
i.MX6 Solo/DualLite doesn't have a gpu3d_shader configuration and
moves the gpu2_core configuration at that place.

Handle these i.MX6 Quad/Dual vs. i.MX6 Solo/DualLite clock differences
by using cpu_is_mx6dl().

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: include <asm/io.h> in hardware.h

As IOMEM is referenced in hardware.h, <asm/io.h> should be included
there.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: move clk_prepare() out from mxc_restart()

It's inappropriate to call clk_prepare() in mxc_restart(), because the
restart routine could be called in atomic context.  Move clk_get() and
clk_prepare() into mxc_arch_reset_init() and only have the atomic part
clk_enable() be called in mxc_restart().

As a result, mxc_arch_reset_init() needs to be called after clk gets
initialized.

While there, it also changes printk(KERN_ERR ...) to pr_err() and adds
__init annotation for mxc_arch_reset_init().

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: create mxc_arch_reset_init_dt() for DT boot

The mxc_arch_reset_init() uses static mapping and calls clk_get_sys() to
get clock.  It's suitable for non-DT boot but not for DT boot where
dynamic mapping and of_clk_get() should be used instead.  Create
mxc_arch_reset_init_dt() as the DT variant of mxc_arch_reset_init(),
and change DT platforms to use it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: add clock support for imx6sl

Add clock support for i.MX6 SoloLite.  It uses the dtc marco support to
define all clock IDs in imx6sl-clock.h, which will be included by both
clock driver and device tree sources, so that the data will stay sync
all the time between kernel and DT.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: enable low-level debug support for imx6sl

Enable low-level debug support for i.MX6 SoloLite by adding the debug
port definitions for the SoC.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: add initial support for imx6sl

Add initial support for i.MX6 SoloLite.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
ARM: imx: disable pll8_mlb in mx6q_clks

The MLB PLL clock's operation doesn't fit for clock framework and
it should be handled internally in MLB driver.
Remove initialization of pll8_mlb clock device but leave its
declaration in mx6q_clks to avoid affecting imx6q clock numbering.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
CC: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>