According to imx8mq errata (ERR007805):

> To meet the clock low period requirement in fast speed mode,
> SCL must be configured to 384KHz or less.

Note that the imx i2c driver already implements this erratum and works
around it. This is only for the description to reflect reality.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

0.8V is outside of the operating voltage specified for imx8mq, see
chapter 3.1.4 "Operating ranges" of the IMX8MDQLQCEC document.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

This reduces power consumption in system suspend by about 10%.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Based on tests with my left ear (which appears to require lower levels
than the right one), one Birch, one Dogwood and three Evergreens.

It seems that the sensor reacts very weakly to hair, so let's make
the thresholds rather generous to compensate.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

RS9116 card already limits itself to 50MHz by being a high-speed card,
while AP6275S can work at 100MHz just fine (technically it should work
at 200MHz as well since it's a SDR104 card, but it doesn't appear to be
the case in practice and further research will be needed to find out why).
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Userland needs the mount matrix to know the correct orientation of
the part.
Signed-off-by: Angus Ainslie <angus@akkea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

They're still in the operating range according to i.MX 8M Quad
datasheet. There's some headroom added over minimal values to
account for voltage drop.

Operational ranges (min - typ - max [selected]):
 - VDD_SOC (BUCK1): 0.81 - 0.9 - 0.99 [0.88]
 - VDD_ARM (BUCK2): 0.81 - 0.9 - 1.05 [0.84] (1000MHz)
                    0.90 - 1.0 - 1.05 [0.93] (1500MHz)
 - VDD_GPU (BUCK3): 0.81 - 0.9 - 1.05 [0.85] (800MHz)
                    0.90 - 1.0 - 1.05 [ -- ] (1000MHz)
 - VDD_VPU (BUCK4): 0.81 - 0.9 - 1.05 [ -- ] (550/500/588MHz)
                    0.90 - 1.0 - 1.05 [0.93] (660/600/800MHz)

Idle power consumption doesn't appear to be influenced much,
but a simple load test (`cat /dev/urandom | pigz - > /dev/null`
combined with running Animatch) seems to show about 0.3W of
difference.

Care is advised, as there may be differences between each
units in how low can they be undervolted - in my experience,
reaching that point usually makes the phone fail to boot.
In my case, it appears that my Birch phone can go down the most.

This is a somewhat conservative set of values that I've seen
working well on all my devices; I haven't tried very hard to
optimize it, so more experiments are welcome.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Correctly set regulation-voltage, termination-current and charge-current
for the different librem 5 board revisions.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add brightness-levels and default-brightness-level properties to
the librem5 board description that have been used for a long time.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

No functional change, but it describes the hardware better.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Fix the regulator name for the audio-1v8 regulator.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The CLKO2 clock is used for both camera CSI interfaces as the
driving clock for the connected sensors. In order for it to be
available, use this hog. We can't simply add it to 2 different
sensor descriptions.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

No frames are streamed when using the default frequencies. I'm not yet
sure why the fastest ones don't work here but we've been using these
frequencies successfully for a long time now.
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Bindings expect thermal node names to end with '-thermal':

  imx8qxp-mek.dtb: thermal-zones: 'pmic-thermal0' does not match any of the regexes: '^[a-zA-Z][a-zA-Z0-9\\-]{1,12}-thermal$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

These buttons are capable of waking up a suspended system, add the
appropriate property for both.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

TPM1/TPM3 are missing, add them.
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

This adds support for the 4 USB3 host ports on the board, which are
connected to the i.MX8MP SoC via a Realtek RTS5411 hub.

As the schematic for the board is not available, I could not validate
that this really reflects the reality, but I modeled things after the
hacked in usage of the GPIOs in the downstream kernel.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add FlexSPI node for i.MX93.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Align the clock and reg properties order with example bindings
and the rest of the imx8mp.dtsi . No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

This block should not be compatible with simple-bus and misuse it that way.
Instead, the driver should scan its subnodes and bind drivers to them.
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Fixes: 94e6197d ("arm64: dts: imx8mp: Add LCDIF2 & LDB nodes")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

UART ports have DMA capability. Describe the UART DMA properties.
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The i.MX8MP DHCOM SoM may come with either external RGMII PHY or
LAN8740Ai RMII PHY on the SoM attached to FEC MAC. Add pin mux
settings for both options, so that DT overlay can override these
settings on SoM variant with the LAN8740Ai PHY.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The i.MX8MP DHCOM SoM may come with either KSZ9131RNXI RGMII PHY
or LAN8740Ai RMII PHY on the SoM attached to EQoS MAC. Add pin
mux settings for both options, so that DT overlay can override
these settings on SoM variant with the LAN8740Ai PHY.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The current variant of the SoM has LAN8740Ai PHY connected to EQoS
strapped to MDIO address 0 , adjust the MDIO address to match the
hardware.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Fix copy-paste error in the EQoS reset comment, align with SoM schematic.
No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The PHY nodes may be activated via DTO in case another SoM variant
is populated into the development kit. Do not delete the nodes.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The GPIO M SoM pin is connected to CLKOUT1, while CLKOUT2 is used as a supply
for TC9595 bridge chip clock. Update the comment. No functional change.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add PCIe support for DH electronics i.MX8M Plus DHCOM SoM on PDK2 carrier board.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The I2C4 bus is exposed on the camera connector. Add and select the
corresponding pinmux entries and set the default frequency. The device
is left disabled, to be enabled from camera overlays.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add i.MX8MP PCIe EP support.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add i.MX8MQ PCIe EP support.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add i.MX8MM PCIe EP support.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add the bbnsm node for RTC & ON/OFF button support
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Use the serdev feature to load the driver for the 88W8997 bluetooth
driver.
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The GICv3 ITS is an MSI controller, therefore its node name should be
'msi-controller'.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Capitalise Yavia in comment and add missing whitespace.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Add PCIe support on the Verdin iMX8M Plus.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

The previous patch added the device tree to support Toradex Apalis
iMX8 [1] aka QuadMax a computer on module which can be used on
different carrier boards which this patch introduces.

The module consists of an NXP i.MX 8 family SoC (either i.MX 8QuadMax or
8QuadPlus), two PF8100 PMICs, a KSZ9131 Gigabit Ethernet PHY, 2, 4 or 8
GB of LPDDR4 RAM, an eMMC, an SGTL5000 analogue audio codec, an USB3503A
USB HSIC hub, an optional I2C EEPROM plus an optional Bluetooth/Wi-Fi
module.

Anything that is not self-contained on the module is disabled by
default.

The carrier board device trees contained in this patch include the
module's device tree and enable the supported peripherals of the
carrier board.

Some level of display functionality just landed upstream but requires
further integration/testing on our side. Therefore, currently only
basic console UART, eMMC and Ethernet functionality work fine.

As there is no i.MX 8QuadPlus device tree upstream those have been
dropped. However, apart from an error message during boot about it
failing to bring up the second Cortex-A72 core this boots fine on
QuadPlus' as well.

[1] https://www.toradex.com/computer-on-modules/apalis-arm-family/nxp-imx-8Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

This patch adds the device tree to support Toradex Apalis iMX8 [1] aka
QuadMax a computer on module which can be used on different carrier
boards.

The module consists of an NXP i.MX 8 family SoC (either i.MX 8QuadMax or
8QuadPlus), two PF8100 PMICs, a KSZ9131 Gigabit Ethernet PHY, 2, 4 or 8
GB of LPDDR4 RAM, an eMMC, an SGTL5000 analogue audio codec, an USB3503A
USB HSIC hub, an optional I2C EEPROM plus an optional Bluetooth/Wi-Fi
module.

Anything that is not self-contained on the module is disabled by
default.

The carrier board device trees in the next patch will include the
module's device tree and enable the supported peripherals of the
carrier board.

Some level of display functionality just landed upstream but requires
further integration/testing on our side. Therefore, currently only
basic console UART, eMMC and Ethernet functionality work fine.

As there is no i.MX 8QuadPlus device tree upstream those have been
dropped. However, apart from an error message during boot about it
failing to bring up the second Cortex-A72 core this boots fine on
QuadPlus' as well.

[1] https://www.toradex.com/computer-on-modules/apalis-arm-family/nxp-imx-8Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Enable VPU decoder and encoder functionality.
Signed-off-by: Zhou Peng <eagle.zhou@nxp.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>