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[144.178.202.138]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b353efa46b2sm1084376866b.24.2025.09.30.00.37.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Sep 2025 00:37:31 -0700 (PDT) From: Luca Weiss Date: Tue, 30 Sep 2025 09:37:22 +0200 Subject: [PATCH RFT] arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250930-sm8250-mdss-reset-v1-1-a64522d91f12@fairphone.com> X-B4-Tracking: v=1; b=H4sIALGI22gC/x2MSQqAMAwAvyI5G4gt4vIAHyDexIPYqDm40IgIx b9bvM0cZgIoe2GFOgng+RaVY4+SpQlM67gvjOKigyGTU2UJdSsj4eZU0bPyhZaKyXJlMkcWYnd 6nuX5nz20TQfD+36Jp6K+aAAAAA== X-Change-ID: 20250930-sm8250-mdss-reset-307c3e921d03 To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Weiss X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1759217851; l=1086; i=luca.weiss@fairphone.com; s=20250611; h=from:subject:message-id; bh=ENGheAYnNW3g5COpjG03gMGNXlOZ2EcAFRzlHVSA5ng=; b=J1uq8r0DaAiTXMXmOmZSb+gbE0/AQqQXkde/No4Im5tvKyezccWDZwJHxiAQnh5r8fiI9uUYS R9BxHaVroVOCzWJst1RVXSv5OAglNbGU9CNARiExyL0gF6lWU3pNxXB X-Developer-Key: i=luca.weiss@fairphone.com; a=ed25519; pk=O1aw+AAust5lEmgrNJ1Bs7PTY0fEsJm+mdkjExA69q8= Like on other platforms, if the OS does not support recovering the state left by the bootloader it needs access to MDSS_CORE, so that it can clear the MDSS configuration. Add a reference to the relevant reset. Signed-off-by: Luca Weiss Reviewed-by: Dmitry Baryshkov Tested-by: Dmitry Baryshkov # RB5 --- Not tested on a device, but should be necessary on v6.17 kernel. --- arch/arm64/boot/dts/qcom/sm8250.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qco= m/sm8250.dtsi index b30aea8b05409094837ad494389d7c22fa1ba7dd..9bcb2c4c34388f343fb93083977= b8d2e9a724bb3 100644 --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi @@ -4687,6 +4687,8 @@ mdss: display-subsystem@ae00000 { =20 iommus =3D <&apps_smmu 0x820 0x402>; =20 + resets =3D <&dispcc DISP_CC_MDSS_CORE_BCR>; + status =3D "disabled"; =20 #address-cells =3D <2>; --- base-commit: e5f0a698b34ed76002dc5cff3804a61c80233a7a change-id: 20250930-sm8250-mdss-reset-307c3e921d03 Best regards, --=20 Luca Weiss