This patch series adds DT support for the IMD Technologies Ltd
(IMDT) QCS8550 SBC and corresponding SoM.
The SBC DTS supports the following hardware on the SBC:
- Gigabit Ethernet (using a Microchip LAN7430 behind the on-board
PCIe switch on PCIE1)
- USB3 as gadget mode only (No DP alt-mode and flip detection support)
- SD card (SDHC2)
- SBC regulators (carrier-board fixed and GPIO regulators)
- M.2 Key-E (PCIE0)
The SoM DTSI supports the following hardware:
- PM8550 PMICs (similar to the SM8550-HDK)
- QCS8550 and UFS
The IMDT QCS8550 SBC hardware is capable of the following but
support is not included in this patch series:
- USB3 flip detection
- 8 MIPI CSI2 cameras are supported using 8 IAS connectors
- MIPI DSI Displays via a DSI/I2C connector
- Microphone input
- Speaker output
- Fan control
- RS232
- M.2 Key-B (also on PCIE1, selected by toggling the on-board PCIe
switch away from the LAN7430 upstream port)
- Wi-Fi and Bluetooth via SDHC4 using an NXP-IW416 (SDHC4 patch [1]
is awaiting review)
The DTS files were written using the SM8550-HDK as an initial
starting point with patches ported from downstream [2].
Claude Opus 4.7 was used for formatting and reviewing
the device trees against other QCS/SM8550 boards.
Patch 1 adds the IMDT vendor prefix
Patch 2 adds DT bindings for the SoM and SBC
Patch 3 adds the SoM DTSI
Patch 4 adds the SBC DTS
[1] https://lore.kernel.org/all/20260427-sm8550-sdhc4-support-v2-1-a4241f43ecd5@imd-tec.com
[2] https://github.com/imd-tec/meta-imdt-qcom/tree/kirkstone/patches/msm-kernel-devicetree/files
Signed-off-by: William Bright <william.bright@imd-tec.com>
---
Changes in v2:
- Patch 1 relocated to be above qcs8550-aim300-aiot instead of below
- Split the SoM and SBC DT changes into two patches, with patch
3 adding the SoM DTSI and patch 4 adding the SBC DTS.
- Dropped the SDHC4 node in patch 4 to focus on the core
SoM and SBC device trees.
This allows the primary hardware support to progress through
review while waiting for feedback for [1].
- Link to v1: https://patch.msgid.link/20260430-imdt-qcs8550-sbc-rfc-v1-0-4d2b6675eaa3@imd-tec.com
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org
---
William Bright (4):
dt-bindings: vendor-prefixes: Add IMDT
dt-bindings: qcom: Document IMDT QCS8550 SBC and SoM
arm64: dts: qcom: Add IMDT QCS8550 SoM
arm64: dts: qcom: Add IMDT QCS8550 SBC
Documentation/devicetree/bindings/arm/qcom.yaml | 7 +
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
arch/arm64/boot/dts/qcom/Makefile | 1 +
arch/arm64/boot/dts/qcom/qcs8550-imdt-sbc.dts | 827 +++++++++++++++++++++
arch/arm64/boot/dts/qcom/qcs8550-imdt-som.dtsi | 319 ++++++++
5 files changed, 1156 insertions(+)
---
base-commit: 95b3f1f1b54d79bada9cf47420034cfe23df978f
change-id: 20260430-imdt-qcs8550-sbc-rfc-4e7cbfbcadd8
Best regards,
--
William Bright <william.bright@imd-tec.com>