linux-kernel - [PATCH v2 0/3] arm64: dts: qcom: qcm6490: Introduce Particle Tachyon

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Message-Id: <20250915-tachyon-v2-0-4f8b02a17512@oss.qualcomm.com>
Date: Mon, 15 Sep 2025 23:24:14 -0500
From: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@....qualcomm.com>
Subject: [PATCH v2 0/3] arm64: dts: qcom: qcm6490: Introduce Particle
 Tachyon

Introduce the Particle Tachyon board (https://www.particle.io/tachyon/),
a single board compute with 5G connectivity and AI accelerator.

The boards currently ships with the Android Boot Loader, but replacing
this with abl2esp allows writing a EFI System Parition and OS partitions
to all of LUN0, and a more UEFI boot experience. A prebuilt version of
abl2esp is provided at [1], as abl2esp-v6.elf.

With a (very) recent version of QDL, a flash programmer from a Tachyon
software release, and a full distro image, this can be achieved with:

  qdl prog_firehose_ddr.elf write abl_a abl2esp-v6.elf write abl_b abl2esp-v6.elf write 0 image.raw

The following firmware files are currently used, on top of what's in
linux-firmware already:
  qcom/qcm6490/particle/tachyon/a660_zap.mbn
  qcom/qcm6490/particle/tachyon/adsp.mbn
  qcom/qcm6490/particle/tachyon/cdsp.mbn
  qcom/qcm6490/particle/tachyon/ipa_fws.mbn
  qcom/qcm6490/particle/tachyon/modem.mbn

In addition to bug fixes that has landed in v6.17-rc this depends on
[2], which is available in linux-next.

[1] https://github.com/qualcomm/abl2esp/releases/tag/v1.0
[2] https://lore.kernel.org/all/20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com/

Signed-off-by: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
---
Changes in v2:
- Fixed qcm6490 vs qcom6490 in a couple firmware-name paths
- Reordered once pinctrl-0 vs pinctrl-names
- Provided speed property for i2c1 to avoid Linux informing us about
  picking 100kHz (no value in downstream)
- Drop a of_graph connections and properties that was already
  established in dtsi
- Link to v1: https://lore.kernel.org/r/20250910-tachyon-v1-0-5090bfd133e0@oss.qualcomm.com

---
Bjorn Andersson (3):
      dt-bindings: vendor-prefixes: Add Particle Industries
      dt-bindings: arm: qcom: Add Particle Tachyon
      arm64: dts: qcom: qcm6490: Introduce the Particle Tachyon

 Documentation/devicetree/bindings/arm/qcom.yaml    |   1 +
 .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
 arch/arm64/boot/dts/qcom/Makefile                  |   1 +
 .../boot/dts/qcom/qcm6490-particle-tachyon.dts     | 864 +++++++++++++++++++++
 4 files changed, 868 insertions(+)
---
base-commit: 5f540c4aade9f1d58fb7b9490b4b7d5214ec9746
change-id: 20250910-tachyon-e3548941397d

Best regards,
-- 
Bjorn Andersson <bjorn.andersson@....qualcomm.com>