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Add initial support for PHYTEC phyBOARD-Nash-i.MX93 board [1] based on
the PHYTEC phyCORE-i.MX93 SoM (System-on-Module) [2].
Supported board features:
* ADC
* CAN
* Ethernet
* EEPROM
* RTC
* RS-232/RS-485
* SD-card
* TPM 2.0
* USB
For more details see the product pages for the development kit and the
SoM:
[1] https://www.phytec.eu/en/produkte/development-kits/phyboard-nash/
[2] https://www.phytec.eu/en/produkte/system-on-modules/phycore-imx-91-93/
Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add initial support for TQMa95xxSA module compatible to SMARC-2.
There is a common device tree for all variants with e.g. reduced CPU count.
It supports LPUART7 for console, CAN, PCIe I2C, SPI, USB3.0, USB2.0, Audio,
SDHC1/2 and QSPI as storage.
[1] https://www.tq-group.com/en/products/tq-embedded/arm-architecture/tqma95xxsa/
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for TQMa8XQPS and TQMa8XDPS modules on MB-SMARC-2 board.
As the only difference is the mounted SoC, both module and baseboard
files are shared.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This overlay configures IMX219 MIPI-CSI-2 camera attached to ISP1.
Also add additional overlay both using LVDS display and camera.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds an overlay for the supported LVDS display tianma tm070jvhg33.
The LVDS interface is the same as for MBa8MPxL so the already existing
overlay can be reused on this platform.
Signed-off-by: Martin Schmiedel <Martin.Schmiedel@tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add the minimal board dts support for i.MX943 EVK. Only the console uart,
SD & eMMC are enabled for linux basic boot.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The Libra board has an LVDS connector. Add an overlay for an
etml1010g3dra LVDS panel supported for the phyCORE-i.MX 8M Plus that may
be connected to it.
Signed-off-by: Yannic Moog <y.moog@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add device tree for the Libra-i.MX 8M Plus FPSC board. The Libra is a
pure development board and has hardware to support FPSC-24-A.0 set of
features. It can be populated with the phyCORE-i.MX 8M Plus SoM to form
a SBC.
The phyCORE-i.MX 8M Plus FPSC [1] SoM uses only a subset of the hardware
features the Libra board provides. The phyCORE-i.MX8MP FPSC itself is a
System on Module based on the i.MX 8M Plus SoC utilizing the Future
Proof Solder Core [2] standard.
To be able to easily map FPSC interface names to SoC interfaces, the
FPSC interface names are added as inline comments. Example:
&i2c5 { /* FPSC I2C4 */
pinctrl-0 = <&pinctrl_i2c5>;
[...]
};
Here, I2C4 is the FPSC interface name. The i2c5 instance of the i.MX 8M Plus
SoC is used to fulfill the i2c functionality and its signals are routed
to the FPSC I2C4 signal pins:
pinctrl_i2c5: i2c5grp {
fsl,pins = <
MX8MP_IOMUXC_SPDIF_RX__I2C5_SDA 0x400001c2 /* I2C4_SDA */
MX8MP_IOMUXC_SAI5_RXD0__I2C5_SCL 0x400001c2 /* I2C4_SCL */
>;
};
The features are almost identical to the existing phyCORE-i.MX 8M Plus
SoM (dts: imx8mp-phycore-som.dtsi), but the pin muxing is different due
to the FPSC standard as well as 1.8V IO voltage instead of 3.3V.
[1] https://www.phytec.eu/en/produkte/system-on-modules/phycore-imx-8m-plus-fpsc/
[2] https://www.phytec.eu/en/produkte/system-on-modules/fpsc/
Signed-off-by: Yannic Moog <y.moog@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add pcie[0,1]-ep nodes and apply imx-pcie1-ep overlay file.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add pcie0-ep node information and apply pcie0-ep overlay file.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Create imx95-15x15-evk pcie0-ep and imx95-19x19-evk pcie[0,1]-ep dtb files.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Use common imx-pcie0-ep.dtso for imx8mp-evk-pcie-ep and
imx8qxp-mek-pcie-ep. No functional change.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for TQMa93xx module attached to MBa91xxCA board.
TQMa93xx is a SOM using i.MX93 SOC. The SOM features PMIC, RAM, e-MMC and
some optional peripherals like SPI-NOR, RTC, EEPROM, gyroscope and
secure element.
TQMa93xxCA can be attached directly while TQMa93xxLA needs an adapter.
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add DT support for Toradex SMARC iMX8MP SoM and Toradex SMARC Development
carrier board.
Link: https://www.toradex.com/computer-on-modules/smarc-arm-family/nxp-imx-8m-plus
Link: https://www.toradex.com/products/carrier-board/smarc-development-board-kit
Co-developed-by: Hiago De Franco <hiago.franco@toradex.com>
Signed-off-by: Hiago De Franco <hiago.franco@toradex.com>
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add support for Boundary Devices/Ezurio Nitrogen8M Plus ENC Carrier
Board and it's SOM. Supported interfaces:
- Serial Console
- EQoS Ethernet
- USB
- eMMC
- HDMI
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add imx95 DTS for SOF usage.
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add imx95-15x15-evk support.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This board is very similar to the already upstream
imx8mp-skov-revb-mi1010ait-1cp1.dts with the difference that it uses a
different 7" LVDS panel.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The BD500 replaces the touch display with 3 bicolor LEDs and a push
button on top of a Skov i.MX8-CPU revision C.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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All Skov i.MX8MP boards share the same baseboard (modulo revisions)
and are booted with the same bootloader image, which samples some
strapping pins at startup and determines which kernel device tree
to use.
For use as bootloader device tree and as fallback, when no matching
device tree has been found, add a basic variant that doesn't configure
any variant-specific peripherals like displays.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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There are SoM variants with no SPI NOR flash populated. Add overlay to be
able to support this.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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There are SoM variants with no eth phy populated. Add overlay to be
able to support this.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Adds a devicetree overlay containing reserved memory regions used
for intercore communication between A53 and M4 cores.
Signed-off-by: Dominik Haller <d.haller@phytec.de>
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add support for the PEB-EVAL-01 expansion board for
phyBOARD-Polis-i.MX8MM.
Signed-off-by: Janine Hagemann <j.hagemann@phytec.de>
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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PEB-AV-10 is an Audio/Video extension module which extends
phyBOARD-Polis i.MX8MM.
With MIPI DSI to LVDS bridge already populated on SoM the PEB-AV-10 adds
support for:
- connecting 10" display,
- audio with TLV320AIC and
- EEPROM.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add PCIe EP overlay file for i.MX8QXP mek board to let PCI work as endpoint
mode.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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One ITE IT6263 LVDS to HDMI converter is populated on NXP IMX-LVDS-HDMI
and IMX-DLVDS-HDMI adapter cards.
Card IMX-LVDS-HDMI supports single LVDS link(IT6263 link1).
Card IMX-DLVDS-HDMI supports dual LVDS links(IT6263 link1 and link2).
Only one card can be enabled with one i.MX8MP EVK.
Add dedicated overlays to support the below four connections:
1) imx8mp-evk-lvds0-imx-lvds-hdmi.dtso:
i.MX8MP EVK LVDS0 connector <=> LVDS adapter card J6(IT6263 link1)
2) imx8mp-evk-lvds1-imx-lvds-hdmi.dtso:
i.MX8MP EVK LVDS1 connector <=> LVDS adapter card J6(IT6263 link1)
3) imx8mp-evk-lvds0-imx-dlvds-hdmi-channel0.dtso:
i.MX8MP EVK LVDS0 connector <=> DLVDS adapter card channel0(IT6263 link1)
i.MX8MP EVK LVDS1 connector <=> DLVDS adapter card channel1(IT6263 link2)
4) imx8mp-evk-lvds1-imx-dlvds-hdmi-channel0.dtso:
i.MX8MP EVK LVDS1 connector <=> DLVDS adapter card channel0(IT6263 link1)
i.MX8MP EVK LVDS0 connector <=> DLVDS adapter card channel1(IT6263 link2)
Part links:
https://www.nxp.com/part/IMX-LVDS-HDMI
https://www.nxp.com/part/IMX-DLVDS-HDMI
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add support for the i.MX8MP based aristainetos3 boards from ABB.
The board uses a ABB specific SoM from ADLink, based on NXP
i.MX8MP SoC. The SoM is used on 3 different carrier boards,
with small differences.
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Board
Adds the DTSI file for the Nitrogen8MP SMARC System on Module which
is delivered with the Nitrogen8MP Universal SMARC Carrier Board.
Initial support includes:
- Serial console
- eMMC
- SD card
Signed-off-by: Bhavin Sharma <bhavin.sharma@siliconsignals.io>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The Gateworks GW82XX-2X is an ARM based single board computer (SBC)
comprised of the i.MX8M Plus based gw702x SoM and the gw82xx baseboard
featuring:
- i.MX8M Plus SoC
- LPDDR4 DRAM
- eMMC FLASH
- Gateworks System Controller (GSC)
- microSD (1.8V/3.3V Capable)
- panel status bi-color LED
- pushbutton switch
- fan controller with tachometer
- USB Type-C connector
- PCIe switch
- 2x GbE RJ45 connectors
- multi-protocol RS232/RS485/RS422 Serial ports
- 2x Flexible Socket Adapters with SDIO/UART/USB/PCIe
(for M.2 and miniPCIe expansion)
- 2x isolated CAN
- GPS
- accelerometer
- magnetometer
- off-board connectors for: SPI, GPIO, I2C, ADC
- Wide range DC power input
- support for 802.3at PoE (via adapter)
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The Kontron Electronics DL i.MX8MM consists of the BL i.MX8MM board
and a 7" LVDS panel. Provide an overlay that enables the panel.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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PCIe of i.MX8MP is dual role PCIe controller, which can work as root
complex (RC) mode and endpoint (EP) mode. Add overlay file to let it work
as EP mode.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add support for DH electronics i.MX8M Plus DHCOM SoM on PicoITX carrier board.
This system is populated with serial console, EQoS ethernet, eMMC, SD, SPI NOR,
LEDs and USB 3.0 host used in USB 2.0 mode on PicoITX.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add support for DH electronics i.MX8MP DHCOM SoM on DRC02 carrier board.
This system is populated with two ethernet ports, two CANs, RS485 and RS232,
USB, capacitive buttons and an OLED display.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The IOTA2 Lumpy board is based on the i.MX8MPlus EVK.
Basic features are:
- 4GB LPDDR4
- 64GB eMMC
- 2x 1GB Ethernet
- USB 3.0 Type-C dual role port, without power delivery
- USB 3.0 Type-A host port
- RGB LED - PWM driven
- speaker - PWM driven
- RTC with super capacitor backup
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add Toradex Verdin Ivy carrier board support. One notable feature of Ivy
is the analog inputs. These inputs are multiplexed, allowing the same
input to measure either voltage or current. For current measurements,
a GPIO switch enables or disables the shunt resistor. This process is
automatically managed by the Linux kernel using the IIO and MUX
subsystems. Voltage measurement is always enabled, but the voltage
measured by the ADC is scaled by a cascade voltage divider. In the
device tree, the equivalent gain of the voltage divider is used, which
can be calculated as follows:
------------
+ |
.-.
R1=30K | |
| |
'-'
|-------------------
Analog Input (AIN) | |
.-. .-.
R2=10K | | R3=30K | |
| | | |
'-' '-'
| |
| |--------
| .-. +
| R4=10K | |
| | | ADC Input (Channels 0 and 1)
| '-'
- | | -
-----------| |--------
=== ===
GND GND
Vin = Analog Input (AIN)
Vout = ADC Input
Rth = Thevenin Equiv. Resistance
Vth = Thevenin Equiv. Voltage
RL = Load Resistor
R1 = 30K, R2 = 10K, R3 = 30K, R4 = 10K
RL = R4 = 10K
Rth = (R1 // R2) + R3 = 37500 Ohms
Vth = (Vin * R2) / (R1 + R2) = Vin/4;
Vout = (Vth * RL)/ (Rth + RL) = Vth/4.75 = Vin/19
Gain = Vout/Vin = 1/19
https://www.toradex.com/products/carrier-board/ivy-carrier-board
Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add Toradex Verdin Ivy carrier board support. One notable feature of Ivy
is the analog inputs. These inputs are multiplexed, allowing the same
input to measure either voltage or current. For current measurements,
a GPIO switch enables or disables the shunt resistor. This process is
automatically managed by the Linux kernel using the IIO and MUX
subsystems. Voltage measurement is always enabled, but the voltage
measured by the ADC is scaled by a cascade voltage divider. In the
device tree, the equivalent gain of the voltage divider is used, which
can be calculated as follows:
------------
+ |
.-.
R1=30K | |
| |
'-'
|-------------------
Analog Input (AIN) | |
.-. .-.
R2=10K | | R3=30K | |
| | | |
'-' '-'
| |
| |--------
| .-. +
| R4=10K | |
| | | ADC Input (Channels 0 and 1)
| '-'
- | | -
-----------| |--------
=== ===
GND GND
Vin = Analog Input (AIN)
Vout = ADC Input
Rth = Thevenin Equiv. Resistance
Vth = Thevenin Equiv. Voltage
RL = Load Resistor
R1 = 30K, R2 = 10K, R3 = 30K, R4 = 10K
RL = R4 = 10K
Rth = (R1 // R2) + R3 = 37500 Ohms
Vth = (Vin * R2) / (R1 + R2) = Vin/4;
Vout = (Vth * RL)/ (Rth + RL) = Vth/4.75 = Vin/19
Gain = Vout/Vin = 1/19
https://www.toradex.com/products/carrier-board/ivy-carrier-board
Signed-off-by: João Paulo Gonçalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add an overlay file to enable I3C support on the i.MX93, replacing I2C1
with I3C. I3C is compatible with I2C, but it has not yet been enabled in
arm64's defconfig. This overlay allows users to conveniently utilize I3C
on the imx93-9x9-qsb platform until I3C and its driver become more mature
and ready for full switch to I3C.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for the Kontron Electronics i.MX8MP SMARC module
(which uses the OSM-S i.MX8MP SoM) on the Kontron SMARC eval carrier.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for the Kontron Electronics OSM-S i.MX8MP SoM
and the matching baseboard BL i.MX8MP.
The SoM hardware complies to the Open Standard Module (OSM) 1.1
specification, size S (https://sget.org/standards/osm).
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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VAR-SOM-MX8MP SoM
Adds the DTSI file for the Variscite VAR-SOM-MX8MP System on Module which
is delivered with the Variscite Symphony Evaluation Kit.
Initial support includes:
- Serial console
- eMMC
- SD card
Signed-off-by: Tarang Raval <tarang.raval@siliconsignals.io>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The GW7905 was renamed to GW7500 before production release.
While we typically do not change compatibles, the GW7905 was never
released before its product name was changed to a GW7500.
The use the the 'xx' wildcard is to denote the fact that this
device-tree can support range of board models from GW7500 to GW7599 as
has been done historically with the Gateworks baseboards to support
various build customizatoins based on the same PCB.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for the Kontron Electronics OSM-S i.MX93 SoM
and the matching baseboard BL i.MX93.
The SoM hardware complies to the Open Standard Module (OSM) 1.1
specification, size S (https://sget.org/standards/osm).
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add a devicetree overlay to disable ethernet for boards where it is not
populated.
Signed-off-by: Benjamin Hahn <B.Hahn@phytec.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add the board device tree with sdhc1/2, cm33, flexcan, mu, lpuart1,
lpi2c1/2, usb enabled and etc, which to support the i.MX 93 14x14
Evaluation kit that is an automotive market oriented evaluation board
with i.MX 93 application processors in a 14x14mm package.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This adds support for TQMa8MPQL module on MBa8MP-RAS314 board.
Signed-off-by: Martin Schmiedel <Martin.Schmiedel@tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add the board device tree with sdhc1/2, cm33, mu, lpuart1, lpi2c1/2,
usb enabled and etc, which to support the i.MX 93 quick start evaluation
kit that provides a low-cost platform to evaluate the i.MX 93 applications
processors in a 9x9mm package.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add a minimal dts for i.MX95 19x19 EVK board:
- lpuart1 as console
- sdhc1/2 as storage
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add the initial support for the CompuLab i.MX8MM IoT Gateway board,
which is based on the Compulab's UCM-iMX8M-Mini SoM.
Board URL:
https://www.compulab.com/products/iot-gateways/iot-gate-imx8-industrial-arm-iot-gateway/
SoM URL:
https://www.compulab.com/products/computer-on-modules/ucm-imx8m-mini-nxp-i-mx-8m-mini-som-system-on-module-computer/
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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UART2 and UART4 can used in following combination,
2 x RS232:
- UART2 and UART4 without flow control
- MUX selection GPIO3_20 must be held low
1 x RS232 + 1 x RS485:
- UART2 - RS232
- UART4 - RS485
- MUX selection GPIO3_20 must be held high
- RE/DE for RS485 controlled with GPIO3_25
1 x RS232 with flow control:
- UART2 - RS232
- MUX selection GPIO3_20 must be held low
Signed-off-by: Parthiban Nallathambi <parthiban@linumiz.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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