Hello,
This patch series adds support for the Variscite DART8MCustomBoard v2
carrier board with a DART-MX8M-PLUS module.
The device tree code originates from Variscite's BSP, and has been
heavily refactored to adapt to mainline DT bindings. Some features have
been left out:
- Camera: cameras should be enabled through overlays as they're not part
of the carrier board itself. I have successfully tested both camera
ports with modules that currently require out-of-tree drivers, so I
haven't included them in this series.
- USB OTG: the carrier board has a PTN5150 but doesn't route its
interrupt pin to the SoC. It should be possible to work around that in
the driver by implementing polling, but that requires more work that I
can perform at the moment.
- WiFi, Bluetooth and audio support: those are part of the DART SoM
itself, for which schematics isn't available, so I can't easily
troubleshoot them.
- PCIe: I lack test hardware for this.
May I tempt someone from Variscite to submit patches to enable at least
WiFi, Bluetooth, audio and PCIe ? :-)
The LVDS display panel is integrated in the carrier board device tree in
the BSP, I have split it out to an overlay in this series as it is
shipped with the development kit but isn't an integral part of the
carrier board. In the review of v2, Shawn pointed out that this overlay
caused the DT compiler to spit ou warnings. This is still the case here:
DTC arch/arm64/boot/dts/freescale/imx8mp-var-dart-dt8mcustomboard-v2.dtb
DTC arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso:54.3-16: Warning (reg_format): /fragment@1/__overlay__/touch@38:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo: Warning (pci_device_reg): Failed prerequisite 'reg_format'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso:52.11-68.4: Warning (avoid_default_addr_size): /fragment@1/__overlay__/touch@38: Relying on default #address-cells value
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso:52.11-68.4: Warning (avoid_default_addr_size): /fragment@1/__overlay__/touch@38: Relying on default #size-cells value
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtbo: Warning (graph_port): /fragment@3: graph port node name should be 'port'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso:85.15-87.3: Warning (graph_endpoint): /fragment@3/__overlay__: graph endpoint node name should be 'endpoint'
arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso:85.15-87.3: Warning (graph_endpoint): /fragment@3/__overlay__: graph connection to node '/fragment@0/__overlay__/panel/port/endpoint' is not bidirectional
DTOVL arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtb
When compiling the overlay in isolation, the compiler doesn't know in
which context it will be applied, and thus lacks information to validate
the device tree. I don't think the issue is specific to this overlay,
and I don't know if there are plans to handle it. If this is a blocker
for the time being, patches 1/4 to 3/4 can already be merged without the
overlay.
Laurent Pinchart (4):
dt-bindings: arm: fsl: Add Variscite DT8MCustomBoard with DART
MX8M-PLUS
arm64: dts: freescale: Add support for the Variscite DART-MX8M-PLUS
SoM
arm64: dts: freescale: Add support for the Variscite i.MX8MP
DART8MCustomBoard
arm64: dts: freescale: Add panel overlay for Variscite DART
.../devicetree/bindings/arm/fsl.yaml | 6 +
arch/arm64/boot/dts/freescale/Makefile | 3 +
.../imx8mp-var-dart-dt8mcustomboard-v2.dts | 529 ++++++++++++++++++
.../imx8mp-var-dart-panel-gktw70sdae4se.dtso | 99 ++++
.../boot/dts/freescale/imx8mp-var-dart.dtsi | 340 +++++++++++
5 files changed, 977 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart-dt8mcustomboard-v2.dts
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart-panel-gktw70sdae4se.dtso
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-var-dart.dtsi
base-commit: 41f93a496af2696d970cbcb3814261a9b32dbaa2
--
Regards,
Laurent Pinchart
