linux-kernel - [PATCH 0/3] arm64: dts: qcom: sc7280: Add the MDSS

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Message-Id: <20250811-sc7280-mdss-reset-v1-0-83ceff1d48de@oss.qualcomm.com>
Date: Mon, 11 Aug 2025 22:11:32 -0500
From: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        cros-qcom-dts-watchers@...omium.org,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@....qualcomm.com>
Subject: [PATCH 0/3] arm64: dts: qcom: sc7280: Add the MDSS_CORE reset

The version of bootloader found e.g. in the Particle Tachyon configures
the display subsystem to the point that Linux isn't recovering the
state (currently hits one or more iommu faults which results in a panic,
still debugging this).

Introduce the MDSS reset, like we've done on other platforms, to allow
the OS to clear the bootloader state.

Signed-off-by: Bjorn Andersson <bjorn.andersson@....qualcomm.com>
---
Bjorn Andersson (3):
      dt-bindings: clock: dispcc-sc7280: Add display resets
      clk: qcom: dispcc-sc7280: Add dispcc resets
      arm64: dts: qcom: sc7280: Add MDSS_CORE reset to mdss

 arch/arm64/boot/dts/qcom/sc7280.dtsi           | 2 ++
 drivers/clk/qcom/dispcc-sc7280.c               | 8 ++++++++
 include/dt-bindings/clock/qcom,dispcc-sc7280.h | 4 ++++
 3 files changed, 14 insertions(+)
---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250811-sc7280-mdss-reset-a703d4b8a2c4

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