linux-kernel - [PATCH 0/3] arm64: dts: qcom: make dev boards prefer usb host mode

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Date: Mon, 24 Jun 2024 14:23:41 +0200
From: Caleb Connolly <caleb.connolly@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Caleb Connolly <caleb.connolly@...aro.org>
Subject: [PATCH 0/3] arm64: dts: qcom: make dev boards prefer usb host mode

Many of the Qualcomm development boards feature DRD capable
type-c ports. However these boards differ from smartphones in their
usage, and it's generally preferred that they would enter host mode by
default when given the choice.

This doesn't affect connection to a host-only PC, since the controller
is still DRD capable.

The RB1/2 are a special case, since they feature an on-board USB hub and
a manual dip switch to toggle between it and the type-c port. Preferring
host mode offers a useful hint to the software if it doesn't feature a
fully DRD capable USB controller driver, it can just use the default
mode (rather than defaulting to peripheral mode unconditionally).

---
Caleb Connolly (3):
      arm64: dts: qcom: sm8650: move usb-role-switch to sm8650.dtsi
      arm64: dts: qcom: sm8350: move usb-role-switch to sm8350.dtsi
      arm64: dts: qcom: prefer host mode on dev boards

 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 1 +
 arch/arm64/boot/dts/qcom/qrb2210-rb1.dts     | 4 ++++
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts     | 4 ++++
 arch/arm64/boot/dts/qcom/sm8150-hdk.dts      | 1 +
 arch/arm64/boot/dts/qcom/sm8350-hdk.dts      | 3 +--
 arch/arm64/boot/dts/qcom/sm8350.dtsi         | 1 +
 arch/arm64/boot/dts/qcom/sm8450-hdk.dts      | 1 +
 arch/arm64/boot/dts/qcom/sm8550-hdk.dts      | 4 ++++
 arch/arm64/boot/dts/qcom/sm8550-mtp.dts      | 4 ++++
 arch/arm64/boot/dts/qcom/sm8550-qrd.dts      | 4 ++++
 arch/arm64/boot/dts/qcom/sm8650-hdk.dts      | 3 +--
 arch/arm64/boot/dts/qcom/sm8650-mtp.dts      | 3 +--
 arch/arm64/boot/dts/qcom/sm8650-qrd.dts      | 3 +--
 arch/arm64/boot/dts/qcom/sm8650.dtsi         | 1 +
 14 files changed, 29 insertions(+), 8 deletions(-)
---
change-id: 20240624-b4-rb2-fixes-1ad33cd72f3a
base-commit: f76698bd9a8ca01d3581236082d786e9a6b72bb7

// Caleb (they/them)