The C.H.I.P. is a small SBC with an Allwinner R8, 8GB of NAND, 512MB of
RAM, USB host and OTG, a wifi / bluetooth combo chip, an audio/video jack
and two connectors to plug additional boards on top of it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

The AXP22x family of PMIC is used with some Allwinner SoCs. This
includes the AXP221, AXP221s and AXP223. They differ in the host
interface, maximum supply current for DCDC1 regulator, and default
voltage and state for various LDO regulators. Also, the AXP221s
does not support fine calibration of the battery fuel gauge.

This patch adds a dtsi file for all the common bindings for these
PMICs. Currently this is just listing all the regulator nodes. The
regulators are initialized based on their device node names.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The LinkSprite pcDuino v3 Nano's two USB host ports are powered by a
single RT9701GB regulator, which has its enable input tied to the A20's
PD2 pin, pulled up to 3v3 via a 10k resistor.

However, the script.bin that shipped with the device listed PH11 and PH3
as Vbus control pins for the two USB ports. Neither of these are
actually connected to anything.

Siarhei Siamashka spotted this problem while reviewing the other
LinkSprite boards. This patch fixes it by only defining a single
regulator, controlled by PD2. Testing shows that the USB ports are now
(correctly) only powered up once the USB PHY driver is loaded.

Reported-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Adam Sampson <ats@offog.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Add a separate pinctrl node for the UART3 CTS and RTS pins shared between
the A10s and A13.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>

The uart3 pins are shared between the A10s and A13, move the pinctrl node
to the common DTSI to avoid duplication.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>

The R8 is very close to the A13, but it still has a few differences,
notably a composite output, which the A13 lacks.

Add a DTSI based on the A13's to hold those differences.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Enable the otg/drc usb controller on the pcDuino1/2 board. Note
that the pcDuino1 FEX file from the vendor contains the following
information in the [usbc0] section:
    usb_id_gpio = port:PH04<0><1><default><default>
    usb_det_vbus_gpio = port:PH05<0><0><default><default>
    usb_drv_vbus_gpio = port:PB09<1><0><default><0>
While the pcDuino2 FEX has:
    usb_id_gpio = port:PH04<0><1><default><default>
    usb_det_vbus_gpio = port:PH05<0><0><default><default>
    usb_drv_vbus_gpio = port:PD02<1><0><default><0>

The ID pin is indeed PH4. The PD2 pin can be used to switch power
on/off for the USB Type A receptacle on pcDuino2, but it has nothing
to do with the MicroUSB OTG receptacle. The VBUS pin of the MicroUSB
receptacle is always connected to 5V according to the schematics
(both pcDuino1 and pcDuino2) and confirmed by doing some tests on
pcDuino2. The PH5 pin is just one of the pins on the J8 expansion
header and has nothing to do with USB OTG. The PB9 pin is pulled
up and connected to the N_VBUSEN pin of AXP209 PMIC, while the
VBUS pin of AXP209 only has a capacitor between it and the
ground (this pin is not used for anything else).

To sum it up. Only the ID pin (PH4) has a real use. And 5V voltage
is always served to the MicroUSB OTG receptacle no matter what is
the state of the PB9/PD2 pins.

This patch has been tested on pcDuino2 to work fine in a host role
with a USB keyboard connected via an OTG cable. It also works fine
in a device role (cdc_ether) with a regular Micro-B cable connected
to a desktop PC.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The LinkSprite pcDuino2 board is almost identical to the older
LinkSprite pcDuino1 board according to the schematic pdf files.
So we just include the existing "sun4i-a10-pcduino.dts" file and
make the necessary adjustments.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The pcDuino1 board does not use any power switches at all for its
two USB host ports and the VBUS pins are always connected to 5V.

The pcDuino2 board uses the RT9701GB power switch for its single
USB host port, but the USB_EN pin (PD2) is pulled up with a 10K
resistor. So that the USB power is still enabled by default,
resulting in the same behaviour as pcDuino1 if nobody touches
the PD2 pin. This minor difference is going to be handled in a
follow-up patch, introducing a separate dts file for pcDuino2.

The primary reason for this fix is that the current dts file
unnecessarily meddles with the PH3 and PH6 pins. But the PH6 pin
is available on the Arduino-compatible expansion header and may
have a better use for other purposes. This patch fixes the
problem and now the PH6 pin can be used with the GPIO sysfs
interface. Tested on a pcDuino2 board with a multimeter:

    echo 230 > /sys/class/gpio/export
    echo "out" > /sys/class/gpio/gpio230/direction
    echo 0 > /sys/class/gpio/gpio230/value
    echo 1 > /sys/class/gpio/gpio230/value

USB still works as expected too.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Enable the otg/drc usb controller on the Bananapi.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

sun7i-a20-bananapi.dts doesn't contain regulator nodes for the AXP209 PMU
driver, so add them to allow for voltage-scaling with cpufreq-dt. Also
add board-specific OPP to use slightly higher voltages at lower
frequencies since Kevin Hilman reported that not all BananaPi boards run
stable at the default voltages inherited by sun7i-a20.dtsi.

Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

"dcdc1-supply" and "dcdc5-supply" have been dropped, as they are
internally connected and should not be represented in the device
tree.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The Reduced Serial Bus controller is used to talk to the onboard PMIC.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The Reduced Serial Bus controller is used to talk to the onboard PMIC.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This patch adds a device node for the Reduced Serial Bus (RSB)
controller and the defacto pinmux setting to the A23/A33 dtsi.

Since there is only one possible pinmux setting for RSB, just
set it in the dtsi.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This allows voltage-scaling with cpufreq-dt. The reliability of
voltage-scaling has been checked by reducing the voltage of all
operating points by 0.025V (for extra safety headroom) and running
libjpeg-turbo decoding tests on 5 pcDuino2 boards. It means that
the standard sun4i voltages should be perfectly fine too.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The A20-SOM-EVB is a reference design of a 2-layer board for the
A20-SOM.
It expands the features of A20-SOM by adding VGA connector, HDMI
connector, audio In/Out, LCD connector, 2 Mpix camera, gigabit
Ethernet, SATA, USB-OTG and 2 USB hosts.

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The hummingbird A31 has 2 rtc devices available: one in the SoC,
and a pcf8563 external rtc on i2c2.

For some unknown reason, the onboard backup battery alone can not
supply enough power to the internal rtc. When external power is
removed, the internal rtc would reset. Hence we want to use the
external one by default.

Add aliases for the rtc devices with the external one as rtc0.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The Wits Pro A20 DKT is an A20 Development KiT with 1G RAM, 4G NAND,
sdio wifi, 1Gbit ethernet, 1024x768 lcd screen with ft5x_ts touchscreen
and a ton of IO connectors.

Note there seem to be multiple sdcard slots on the board (4 in total), but
other then mmc0 none of these are hooked up by default, there is a ton of
dip-switches which likely allow hooking some of these up, but the
documentation of the board only describes the use of a fraction of them,
so for now we only support mmc0.

Signed-off-by: Jelle de Jong <jelledejong@powercraft.nl>
[hdegoede@redhat.com: Use pwrseq instead of a regulator for the wifi-en pin]
[hdegoede@redhat.com: Add support for OOB irq for the sdio wifi]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Enable the otg/drc usb controller on the Wexler TAB7200 tablet.

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Add usb otg support for Orange pi, based on Orange pi mini.

Signed-off-by: Reinder de Haan <patchesrdh@mveas.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Enable the otg/drc usb controller on the orangepi-mini.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Add a node representing the usb power supply part of the axp209 pmic, note
that the usb power supply and the (to be added later) ac power supply will
each have their own child-node, so that they can be separately specified
as power-supply for other nodes using a power-supply property with a
phandle pointing to the right axp209 child-node.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

A33 Q8 tablets with the ippo-q8h-v1.2 pcb will work fine with the
generic q8-tablet.dts and given the many variants of PCBs found in
Q8 tablets using such a specific dts name was a mistake in hindsight.

We cannot just drop the ippo-q8h-v1.2.dtb as existing u-boot configs
may very well point to it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This is a generic dts file for A33 based q8 formfactor tablets,
this is intended to replace both sun8i-a33-ippo-q8h-v1.2.dts and
sun8i-a33-et-q8-v1.6.dts (these can be fully dropped after a
transition period).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The bs1078v2 is a pcb found in 10.1" tablets with an A31 soc, 1G RAM
and 8G NAND, rtl8723as usb wifi, 1 micro USB OTG port, 1 USB HOST port

This commit adds a dts for v2 of the bs1078 pcb.

Signed-off-by: Lawrence Yu <lyu@micile.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Enable the otg/drc usb controller on the Marsboard A10.
Similar to Cubieboard, the 5V of the otg is directly connected to the
general 5V, so we only use the id pin.

Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Add IRQ configuration for bma250 accelerometer.

Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

A33 has the same "Security System" crypto engine as A10/A20, but with a
separate reset control.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The LCD backlight on the A23/A33 Q8 format tablets is enabled
with a GPIO controlled regulator, and brightness controlled with
the SoC's PWM controller.

The backlight is powered from the AXP223 PMIC's DC1SW output,
which is not supported yet. A proper bootloader is required
to enable it.

The brightness levels are arbitrary. The FEX files do not have
such information. As such, actual brightness levels may differ
from device to device.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Even though it's not mentionned in the A23 user manual, the A23 has a gate
for the AHB1 clock to the msgbox IP. Add it to the clock-indices.

Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The AHB1 gates were assumed to be identical between the A23 and the A33,
which turned out to be wrong. Move the A23 gates definition to the A23
DTSI.

Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The A33 has a different gates array than the A23, add the node to the DT.

Reported-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This commits adds a generic dts file for q8 formfactor a13 based tablets.

The tablets ship in many variants, with the difference mainly being the
touchscreen controller / accelerometer / wifi chip used.

The wifi is USB based, and thus not listed in devicetree.

The touchscreen controller / accelerometer may turn out to be a problem
once we add support for those. We can either do something with devicetree
overlays, or add sun5i-a13-<touchscreen>-<accelerometer>.dts files. The
latter is what the android mod community is doing with firmware images.

This dts was tested with an a13 q8 tablet with a pcb labelled: "94V-0",
silead gsl1680 touchscreen controller and a mc32x0 accelerometer.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This is the sun5i / a13 version of sun8i-q8-common.dtsi for use in dts
files for a13 q8 based tablets. Compared to sun8i this uses uart1 for the
serial console, and PG0 for card-detect for mmc0.

This also adds pmic and otg support, which both use the same config on
all known q8 a13 devices. This is not present in sun5i-q8-common.dtsi
because pmic / otg support for sun8i has not yet been merged.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The PWM controller has 2 outputs, with one usable pin for each.

Add a pinmux setting for the first channel. This is often used
for backlight dimming on tablets.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

A23/A33 have a PWM controller that is compatible to the one on the A20.
Add a device node for it.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

This patch add support to the keypad clock on sun7i

Signed-off-by: Yassin Jaffer <yassinjaffer@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Add mma8452 accelerometer to sun6i-a31-colombus.dts.

Signed-off-by: Sander Vermin <sander@vermin.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

The Wobo i5 top set box is a somewhat curious A10s based top set box,
it uses an AXP209 rather then the AXP152 usually used in combination
with the A10s. It has an ethernet phy connected to PORTD rather then
PORTA, and its built-in usb wifi is connected via the otg controller.

This commit adds a dts file adding support for this top set box.

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>