linux-kernel - [PATCH v2 0/4] Initial support for Qualcomm Hamoa IOT EVK board

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Message-Id: <20250724-hamoa_initial-v2-0-91b00c882d11@oss.qualcomm.com>
Date: Thu, 24 Jul 2025 16:15:22 +0800
From: Yijie Yang <yijie.yang@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: Yijie Yang <yijie.yang@....qualcomm.com>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/4] Initial support for Qualcomm Hamoa IOT EVK board

Introduce the device tree, DT bindings, and driver modifications required
to bring up the HAMOA-IOT-EVK evaluation board—based on the X1E80100 SoC—to
a UART shell.
This patch set focuses on two key hardware components: the HAMOA-IOT-SOM
and the HAMOA-IOT-EVK carrier board.
The HAMOA-IOT-SOM is a compact System on Module that integrates the SoC,
GPIOs, and PMICs. It is designed to be modular and can be paired with
various carrier boards to support different use cases.
The HAMOA-IOT-EVK is one such carrier board, designed for IoT scenarios.
It provides essential peripherals such as UART, on-board PMICs, and
USB-related components.
Together, these components form a flexible and scalable platform, and this
patch set enables their initial bring-up through proper device tree
configuration and driver support.

Qualcomm SoCs often have multiple product variants, each identified by a
different SoC ID. For instance, the x1e80100 SoC has closely related
variants such as x1e78100 and x1e001de. This diversity in SoC identifiers
can lead to confusion and unnecessary maintenance complexity in the device
tree and related subsystems.
To address this, code names offer a more consistent and project-agnostic
way to represent SoC families. They tend to remain stable across
development efforts.
This patch series introduces "hamoa" as the codename for the x1e80100 SoC.
Going forward, all x1e80100-related variants—including x1e81000 and others
in the same family—will be represented under the "hamoa" designation in the
device tree.
This improves readability, streamlines future maintenance, and aligns with
common naming practices across Qualcomm-based platforms. 

Features added and enabled:
- UART
- On-board regulators
- Regulators on the SOM
- PMIC GLINK
- USB0 through USB6 and their PHYs
- Embedded USB (eUSB) repeaters
- USB Type-C mux
- PCIe6a and its PHY
- PCIe4 and its PHY
- Reserved memory regions
- Pinctrl
- NVMe
- ADSP, CDSP
- WLAN, Bluetooth (M.2 interface)
- USB DisplayPort

Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
---
To: Bjorn Andersson <andersson@...nel.org>
To: Konrad Dybcio <konradybcio@...nel.org>
To: Rob Herring <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>
To: Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org
Cc: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org

---
Changes in v2:
- Merge the compatible rules and remove the compatible string map.
- Align the ADSP and CDSP firmware paths with other x1e80100 platforms.
- Remove the regulators on the M.2 card, as well as those managed by UEFI on this board.
- Merge another patch series that enables USB DisplayPort functionality on this platform: https://lore.kernel.org/all/20250723-x1e-evk-dp-v1-1-be76ce53b9b8@quicinc.com/
- Link to v1: https://lore.kernel.org/r/20250716-hamoa_initial-v1-0-f6f5d0f9a163@oss.qualcomm.com

---
Yijie Yang (4):
      dt-bindings: arm: qcom: Document HAMOA-IOT-EVK board
      firmware: qcom: scm: Allow QSEECOM on HAMOA-IOT-EVK
      arm64: dts: qcom: Add HAMOA-IOT-SOM platform
      arm64: dts: qcom: Add base HAMOA-IOT-EVK board

 Documentation/devicetree/bindings/arm/qcom.yaml |   1 +
 arch/arm64/boot/dts/qcom/Makefile               |   1 +
 arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts      | 915 ++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi     | 607 ++++++++++++++++
 drivers/firmware/qcom/qcom_scm.c                |   1 +
 5 files changed, 1525 insertions(+)
---
base-commit: 4d088c49d1e49e0149aa66908c3e8722af68ed07
change-id: 20250604-hamoa_initial-0cd7036d7271

Best regards,
-- 
Yijie Yang <yijie.yang@....qualcomm.com>