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

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Message-Id: <20250716-hamoa_initial-v1-0-f6f5d0f9a163@oss.qualcomm.com>
Date: Wed, 16 Jul 2025 17:08:38 +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 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)

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

---
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 |   9 +-
 arch/arm64/boot/dts/qcom/Makefile               |   1 +
 arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts      | 835 ++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi     | 607 +++++++++++++++++
 drivers/firmware/qcom/qcom_scm.c                |   1 +
 5 files changed, 1451 insertions(+), 2 deletions(-)
---
base-commit: bf66a1ba8e378d23fde984df2034d909215f5150
change-id: 20250604-hamoa_initial-0cd7036d7271

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