From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ixit.cz (ixit.cz [185.100.197.86]) (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 7730424729A; Wed, 18 Feb 2026 11:18:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.100.197.86 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771413533; cv=none; b=GPZUO/J38PtutNNACn8r0ru9S9YeHPut/uOZcAqL6n0007OeQjyyw6TXbfGSyZPtbIGL1S5X4ZRD7O95G4hVo1hrdqnvFxsWL6AkY+i6wO3WrXd2zrB9Q1hEI8VzdGnEhKkmp/NWxbwoedakI+Ix1+dukXD2deUZbnotBaqdX/M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771413533; c=relaxed/simple; bh=o3WhltwIU/ce2JP51Pd3bWIpA7/t5ViZPBP2WUTW9tQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=P1M0x4ZLOZkkNg9VCrmApY6GHYPZrjiD+cS20tMi2ePk60DFik5fCyn0q0DQepnDR32uE4uEAb6Ju8gl1D2yur0uGKhgwo4uXSdtLOUVMxM4s1MfEDwDxWbxWwx2KGRI86ga8ir/lT0iESj7GPCEL/eSpOhyECs+/WfcZBdNDJo= ARC-Authentication-Results:i=1; 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bh=/2twYMBPL8RFmrM3kKaz3qbCcrHZHObNC7PqzjiacFQ=; b=vRm9HL+4fTYn4qfcAWQ4OKTN7cRcdX1HbYkFCyczlxD//lnA0bh/0auT1Ta0wQi9iXk8U+ ik7NAJOxqD+WQjgGcFlkRhL3X5/ROV3dvMgqAuv3iKdULdYpy/XO4XLj8Yb+ddUsl257eP yO787TrMGg+xBkYJ6L5SYilhAUtxyDo= Message-ID: Date: Wed, 18 Feb 2026 12:18:39 +0100 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/4] arm64: dts: qcom: sdm845: Add missing MDSS reset To: Konrad Dybcio , Dmitry Baryshkov , Bjorn Andersson , Michael Turquette , Stephen Boyd , Ulf Hansson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20260217-sdm845-hdk-v1-0-866f1965fef7@oss.qualcomm.com> <20260217-sdm845-hdk-v1-3-866f1965fef7@oss.qualcomm.com> <590f75c2-6418-4d39-ba7e-589acdf98786@oss.qualcomm.com> Content-Language: en-US From: David Heidelberg Autocrypt: addr=david@ixit.cz; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 18/02/2026 11:30, Konrad Dybcio wrote: > On 2/17/26 10:20 PM, Dmitry Baryshkov wrote: >> 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. > > This is not the relevant reset > > You want MDSS_CORE_BCR @ 0xaf0_2000 Thanks, I prepared the fixes [1]. I'll try to test it if it's not breaking anything for us and send as v2 of [2]. David [1] https://codeberg.org/sdm845/linux/commits/branch/b4/mdss-reset [2] https://patchwork.kernel.org/project/linux-arm-msm/patch/20260112-mdss-reset-v1-1-af7c572204d3@ixit.cz/ > > Konrad > >> >> Signed-off-by: David Heidelberg >> Signed-off-by: Dmitry Baryshkov >> --- > > >> 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/qcom/sdm845.dtsi >> index bf2f9c04adba..75c192eddc57 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 = "mdss"; >> >> power-domains = <&dispcc MDSS_GDSC>; >> + resets = <&dispcc DISP_CC_MDSS_RSCC_BCR>; >> >> clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>, >> <&dispcc DISP_CC_MDSS_MDP_CLK>; >> -- David Heidelberg