linux-kernel - [PATCH v2 0/2] arm64: dts: qcom: Add Qualcomm RB2 board dts

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Date:   Thu, 16 Mar 2023 02:31:43 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        linux-kernel@...r.kernel.org, bhupesh.linux@...il.com,
        bhupesh.sharma@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski@...aro.org
Subject: [PATCH v2 0/2] arm64: dts: qcom: Add Qualcomm RB2 board dts

Changes since v1:
-----------------
- v1 can be viewed here: https://lore.kernel.org/linux-arm-msm/20230314210828.2049720-1-bhupesh.sharma@linaro.org/
- Addressed review comments from Konrad and fixed the board dts and also
  added a new 'qcom,qrb4210' compatible.
- Although Krzysztof provided an Ack for [PATCH 1/2] from the v1 series,
  since this series introduces the new 'qcom,qrb4210' compatible, so I
  have dropped the same for now.
 
Add an initial device tree for Qualcomm RB2 board (see [1]).
It is based on the Robotics version of the Snapdragon SM4250
Soc, i.e. QRB4210.

Currently it enables:
    - eMMC via SDHC1,
    - uSD card via SDHC2,
    - RPM regulators,
    - Debug UART (via micro USB port).

Subsequent patchset(s) will add more peripherals like USB, etc.

This patchset is dependent on the QRB4210 SocInfo patchset sent out
earlier (see [2]).

To get a successful boot run:
    
   $ cat arch/arm64/boot/Image.gz arch/arm64/boot/dts/qcom/\
    qrb4210-rb2.dtb > ./Image-adp.gz+dtb

   $ mkbootimg --kernel ./Image-adp.gz+dtb \
     --ramdisk ./some-initramfs-image.rootfs.img \
     --output ./rb2-boot.img --pagesize 4096 \
     --base 0x80000000 --cmdline 'SOME_CMDLINE'
    
   $ fastboot boot ./rb2-boot.img

[1]. https://www.qualcomm.com/products/internet-of-things/industrial/industrial-automation/qualcomm-robotics-rb2-platform#Overview
[2]. https://lore.kernel.org/linux-arm-msm/20230315160151.2166861-1-bhupesh.sharma@linaro.org/

Bhupesh Sharma (2):
  dt-bindings: arm: qcom: Document the Qualcomm qrb4210-rb2 board
  arm64: dts: qcom: Add base qrb4210-rb2 board dts

 .../devicetree/bindings/arm/qcom.yaml         |   8 +
 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts      | 224 ++++++++++++++++++
 3 files changed, 233 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts

-- 
2.38.1