From nobody Sun Feb 8 22:50:35 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DEBB272816; Mon, 12 Jan 2026 12:33:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768221199; cv=none; b=rXUj9emZ3iF4zV1NuxyRAmJKcZsIpH+RBBI+MkfCB59n/9ev4BMoCd1eGbpfavm1ngMu2Cxqua043nOHRMUiFSJwOsBqXjYtw0lcvPAjA3zEn2bqXMPbhOw2G99xhZOCoNg2JuZ6lnbLRtjeINczRhgkvI618wnNd7mouQ6GFQ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768221199; c=relaxed/simple; bh=JFm4xjpk0gt5AwhRl/LrECGaxHo6dpFzzTel1E1IvQE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=NEVmLhlAgtR0yNwrYLHoF7lftv+cpGJAfdEC1Lks2dzjV6oZsoCJds/OpvavmDY0g9rhqEkGQrr6E90+emt/5XMH9cUgm8iIPTYZKvYmMKdz2RM/Op7AwO8CUszUuXAnf4SIHjAAxIZOEcXtt/mj+tm/L9fAbgQwiQ/CX9BYJWc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dSoVeO7j; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dSoVeO7j" Received: by smtp.kernel.org (Postfix) with ESMTPS id 29331C19421; Mon, 12 Jan 2026 12:33:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768221199; bh=JFm4xjpk0gt5AwhRl/LrECGaxHo6dpFzzTel1E1IvQE=; h=From:Date:Subject:To:Cc:Reply-To:From; b=dSoVeO7jnWSjeauLfsVFpdc+WySI14FrN2OtBRVvgTb8lNxq07cM+lgJX9vbYQupF /POLYDfsp2DAG0MSzyF3ev0FMiUjAjqtaJ/6ZS8A/Npf8VA9WvcnTYhoZxavLNIoT8 ++L1XdqYBPejfOb7A/fk6Ic8VlDPrSLytGCSVvCbJABd6x2UY/IwP1s5O9sC7FAWVk 7dN8WQl70azk5pNxrLONmD1dFcm2TF2pcPFUIeJalYt+ih4yAChc7+h73QkmNzxNLN PTGTe363CKTng7pMAhHb4a6AYGB3yLhc9abznvUDLj38VtybWBLvXZvBk77fCHhNVm tvpBZYEE5hNWw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1EE86C9EC7F; Mon, 12 Jan 2026 12:33:19 +0000 (UTC) From: David Heidelberg via B4 Relay Date: Mon, 12 Jan 2026 13:33:18 +0100 Subject: [PATCH] needsreview! arm64: dts: qcom: sdm845: Add missing MDSS reset 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: <20260112-mdss-reset-v1-1-af7c572204d3@ixit.cz> X-B4-Tracking: v=1; b=H4sIAA3qZGkC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDQ0Mj3dyU4mLdotTi1BJdAzNLC4s0A9PENEszJaCGgqLUtMwKsGHRsbW 1ADZb8S5cAAAA X-Change-ID: 20260112-mdss-reset-06988f05af96 To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Petr Hodina , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, David Heidelberg X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1207; i=david@ixit.cz; h=from:subject:message-id; bh=xyL7eWXK7jE1/oIiV8yIed+nCW2dEm0vu5kEHX57DqY=; b=kA0DAAgBYAI/xNNJIHIByyZiAGlk6g6guz34GD1Dcwr00p0q3jdirNw/3X6blRI7zOKPG4PU5 4kCMwQAAQgAHRYhBNd6Cc/u3Cu9U6cEdGACP8TTSSByBQJpZOoOAAoJEGACP8TTSSByRqsQAIF9 peF+lAX6NCY9jm4ex3bGjQu9iSD2u97EoXphVQLnebgrGS7B8xneLx68rSgGt0lS+GyYYwyqdzn nE7pAjnYHsm5dHc+TMtyMBT+kyjWn3MKlPRT9EjzRpguStL/Amo7DJ1ANwGREO0FgwPVWpgn+Q+ qhDkdaX/eArcpB8lVo8EN4gu3dQvzAmlX4yhShZ0oAFAaDJHeKJQIhdAZ3kiSJclHNl5Xp0M3t9 sShXaXqqjuHRImrhK/+f9WX9z/v53bjvOnccELxWvhHUTES1dDeIveGvcppOI5ySPWjvMO3TISf GiJWIBRyEyA2Pv5fjvdncyUEMpLUaIv9Yek1i89t+6KA7doS/kUJPLiyJKGQWTjciYlre5EkXc+ dsS0R3PxUl71LcfIBMKpDtmFXx6o8hG6OqlZHPecXrfUzcjxNG2Jresn+Ihyn7pP4paSbRf8A9f 9ipg53tfzmnDPKLQXGSAuHmgUDXNUGBOlkN98T59eLjnUjg0nregN/LUVs1BJoxVXIlF9xBtMiq AZAd2eGrzN1drMiaUz6rFYih1yApdcE12Sc8YKVPCO1+Se3bF8HVGzbgveSK50JSa+YaZeuEQ0z BC3YGMzBauA6s4f+Q3Za9JYvr3su7hayYdYV16P0TwZlrHbbcRijY2w2HmiWFoSvucz8GucChfo BxlzK X-Developer-Key: i=david@ixit.cz; a=openpgp; fpr=D77A09CFEEDC2BBD53A7047460023FC4D3492072 X-Endpoint-Received: by B4 Relay for david@ixit.cz/default with auth_id=355 X-Original-From: David Heidelberg Reply-To: david@ixit.cz From: David Heidelberg If the OS does not support recovering the state left by the bootloader it needs a way to reset display hardware, so that it can start from a clean state. Add a reference to the relevant reset. Signed-off-by: David Heidelberg --- It efficiently fixes nothing for us (at least what we're aware), so I assume the state left by bootloader is good enough I sending this as a something "which seems right" and works for us in sdm845-next tree. David --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qco= m/sdm845.dtsi index bf2f9c04adba7..75c192eddc57c 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -4550,6 +4550,7 @@ mdss: display-subsystem@ae00000 { reg-names =3D "mdss"; =20 power-domains =3D <&dispcc MDSS_GDSC>; + resets =3D <&dispcc DISP_CC_MDSS_RSCC_BCR>; =20 clocks =3D <&dispcc DISP_CC_MDSS_AHB_CLK>, <&dispcc DISP_CC_MDSS_MDP_CLK>; --- base-commit: f417b7ffcbef7d76b0d8860518f50dae0e7e5eda change-id: 20260112-mdss-reset-06988f05af96 Best regards, --=20 David Heidelberg