From nobody Mon Feb 9 19:04:59 2026 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 3C5CF329E75 for ; Sat, 17 Jan 2026 06:36:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768631764; cv=none; b=S1OYlxveNBH1DJUkzlTYuLzfPfZhXvfcp2VBHbRGHaqggYhU/Z4kzCZfbnay/RXO6XU6Yoh2Woc62jE21bKSlQ5vHoznd8SLt/+Xg0q4/TG0QAhBvzhZ7p9GTsneFM6yDGDgZUmq1fJWX0IcbYPk25em1XxGflAqmCXXcHi0jaI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768631764; c=relaxed/simple; bh=Rj8iAyMfVncSKRo62kAtziE4yMoYdmQABsHSh5kDWEY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IVYBwhISJH3wqE64bDqniQu9t5v/jXc/oTbpeVBD9yiMvC5qrwgH6GUWLCOGceR6BJRhjDEVaZ/7lBXLQqlu3eXrNtVlzAyDS1PHVlrgUvS90flD+hiHtXvp2IoZrvkeh7GW241BMO2IHOdXjaGpnYPeQjH36Vrw9Ivo+uUtuMM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=H6ZGO5UD; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=F/DAWdB1; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="H6ZGO5UD"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="F/DAWdB1" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 60H3jYVh2738969 for ; Sat, 17 Jan 2026 06:36:02 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 2tTHPmj2NBaJb//qs7JmAmt97xPSCIRHJxgVnBNp34c=; b=H6ZGO5UDfKJ9ThXp 7/j2frgM59P/RJzsMIxNqq8aC3y2O1gGrrd+B8xRl66TbCGN1tKHdXeBN3QhSPKN Cn0NsVJsdLbMz42ZdAEBbVAlpDTrpRBCmtlkT7o09788wg8m1pXIA6rFVGvIjBZZ qrhZg+PNfq1OAChIaEgcABeratz0aNbfHuLdx3BVywrBpocXRweW+ObUyC49xWHd no7vRTHWgoWpeLPgBsKM+m5ntou0TXja8Ge9dSTxsUsv9JcT5IsoBl7BGB2dffUp RFKCOWbMBcDlPHN9H6iC67F0mdAfqrvVJaT2/D3BYbG+lCtJfoGJwRNd7XwBN1mi Bjs3eQ== Received: from mail-qv1-f70.google.com (mail-qv1-f70.google.com [209.85.219.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4br2t709wr-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Sat, 17 Jan 2026 06:36:02 +0000 (GMT) Received: by mail-qv1-f70.google.com with SMTP id 6a1803df08f44-8823f4666abso71351056d6.0 for ; Fri, 16 Jan 2026 22:36:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1768631761; x=1769236561; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=2tTHPmj2NBaJb//qs7JmAmt97xPSCIRHJxgVnBNp34c=; b=F/DAWdB1z0kKynDKFV/e1KR5O1gy5MOHGYxLuyze3SHfkWm9A9PpYUwzMUAS6OHmFj MBbtbZA30nPne0JoTh+0RKIdW33Gq+TFbSJOuDWcDpCRBiMSwQG0I/vPHtOeyNcNYfuN xwFbiFlEVu8i+64/hD/pyg84HPw3qaVRHurzpjd0ZSPMc9UcMw64UuzW1tybedJ6wxZO qPlsMZS5ZGhjpUd0ISaOfatPdjmiXMqRN1iwbTwAyPHJMUwTU+kPW7wLYV40JFhvo/kP HLyaTjIcUlz+cnSOPSrj7syYIg88k2okPNd6LyCJpgyOj6kQKh61FiYwiaU2eaBVtckK dAPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768631761; x=1769236561; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=2tTHPmj2NBaJb//qs7JmAmt97xPSCIRHJxgVnBNp34c=; b=MeByBY2OAn+bvCjCym/BK5+LEVtbNmWnbI47XLlgXoOzrcxmpaBIXGa6t3D68qICa9 rlClzWt5KM4xtIq01ImVR4HQbNgaFsLIZ31o9bEtcSjS6EfoBhjPcejEf45Hm4+yPcez O7C/vKYQVjXcIijN2h/rp145jbKNsGUQDlR+uu+x+oipluKUFLjetx4g5aDzOLJhCH3m lkbXWA4QdvX92I6+qAk8mTW7zDCAc8Xr9vBeHkBYT78KOlQRzhd8phSbYlIA4pLBhnWP wEwQ5oWqWr5YdaXFY5mKp3vQt4/Jv2uiAVjzLbkcW8YiRiZk2eZ8LdUjXuHsw6IpDODC 6puA== X-Forwarded-Encrypted: i=1; AJvYcCU+5KScB2k8dp0NZ1TkHHruJ/9AJH3nIvbdRd72OXcNdjfndyorAbb01R7FxGSIAOjQ6mK5OAAe2TVN3Po=@vger.kernel.org X-Gm-Message-State: AOJu0YxTtKXU2KlibroTe/UF/kc0YhLff9q8wr/tJ6y68HMCIauQ2ELf MItDoKaXGqMjpCyYQONWkBZjwp9ossOrupQzsQphOlF1RqzNYBMerYmjzh1R5X4qgAlUsz9KKW0 LIm/JmKP4KqNAzXd71s6WaWyrl2ZOto0B8MS4e++a41/q9ytkSEsDquAQEjepnQcUeN4= X-Gm-Gg: AY/fxX4H3aMf4eKYfo3+bIuV8rCGWiXMn/wmiQ5Fvei3Jws7r/ItGPrEXbrWaZTZPqy ORfPRNsN145W2LcnKPKObDUNWXnzCmxymdDJHUwd4+Qo77aVPSuEEHaYhCqQaEUV5tJUmJSovKe 2J7gLXtBNQKGC9d5GJuonxx//yO4v393FF1mm/5sn20ROmi/km0B1pvup6Es1Xe+srB9OLlg/wc njU1G1dxAMCZUbbqGubF93H1+OFn7CJsrH7wKoMAkP385jZDdhaNbsQtVaJXcvUsFcDcqfqBeJ5 yRP9DebLjC2kNzyYDNJfRhKlAcrXwoYQ/svDWQVzLQcBFIatP6jaoP+Hn4Z6PIOYsoCMpwM2bjE T8H5qEs5EcH5E0M2oHRb4vnRdHN1aJKR6hGL+l4BOMkS+GTlneyzS/APiwbCIpU3+UfovX7Q8UL ZcviWUlziUaV8omtSJpRecRgY= X-Received: by 2002:a05:620a:2a02:b0:8c5:3869:3f28 with SMTP id af79cd13be357-8c6a695902fmr797747385a.85.1768631761501; Fri, 16 Jan 2026 22:36:01 -0800 (PST) X-Received: by 2002:a05:620a:2a02:b0:8c5:3869:3f28 with SMTP id af79cd13be357-8c6a695902fmr797744785a.85.1768631761035; Fri, 16 Jan 2026 22:36:01 -0800 (PST) Received: from umbar.lan (2001-14ba-a073-af00-264b-feff-fe8b-be8a.rev.dnainternet.fi. [2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-38384e790fdsm14049851fa.23.2026.01.16.22.35.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Jan 2026 22:36:00 -0800 (PST) From: Dmitry Baryshkov Date: Sat, 17 Jan 2026 08:35:54 +0200 Subject: [PATCH 1/4] drm/msm/mdss: correct HBB programmed on UBWC 5.x and 6.x devices 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: <20260117-msm-ubwc-fixes-v1-1-d5c65ea552c7@oss.qualcomm.com> References: <20260117-msm-ubwc-fixes-v1-0-d5c65ea552c7@oss.qualcomm.com> In-Reply-To: <20260117-msm-ubwc-fixes-v1-0-d5c65ea552c7@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Konrad Dybcio , Konrad Dybcio , Vinod Koul , Stephan Gerhold Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1114; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=Rj8iAyMfVncSKRo62kAtziE4yMoYdmQABsHSh5kDWEY=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBpay3LXy7BviCDiClLOQ2PK8+jm9Hcs0eMu17i7 xUfA2+3DIWJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaWstywAKCRCLPIo+Aiko 1V/KB/46WgKJQQ+Lx/fXdiYXGiGzZRRziXq0o8DqaUBQZkJIKcpHd/e3QAEcEzG1qzWUoKJDGVM CWj5dcjoOz4GOfBp02RahyGcVMfRWym/6KWCmq/5onHWRgctC/scP9O/8j9W5gHMIR1H93ijpIo It2YM/n/pooiBA3EHr6Dx5r51y44w4kSrwNo1t3Pl8sbQxq/xHuIYFLXnIvLDxXdTOcwExyzlXe kAeomzjiB3znPgp28UWNmTb5tyBYNSTFgOCAoVKS8tBX4VbnWUGB6CijhL619Nb5TOkvAu/2Yz4 /Ybne8HeCKGMg8aQMXO83qJyYQWiWZ1lUHur2rjvge8JL5zy X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Authority-Analysis: v=2.4 cv=Fdc6BZ+6 c=1 sm=1 tr=0 ts=696b2dd2 cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=iGWu5DhtBPyiFZBs7r8A:9 a=+jEqtf1s3R9VXZ0wqowq2kgwd+I=:19 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS:22 X-Proofpoint-ORIG-GUID: 5gVKByFxIsPlZpVjo8r0ofiSUSkdv9Z8 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE3MDA1MiBTYWx0ZWRfX3kFHJfIwobbW sYxQdvZ2HUzAfA+SuJFcvaziK2D3MSWaEWzXGmV/42YIlxdgdS5/oHtzQ+i2yrGZcV3CE3zsqQd ux2ZNVyJEueFBTddfkGne5jHkhLM48B4Gs8KCVKQ+n6RtedAIIGbiJ6jOf7+1EWUTR+cLQtCj60 ncwaeKgdO7PBE9IhdZ2ww7JDBN/pIcWMyJvhJwdyxHVp4rEzZGRL56tXYexHHt5spVGsUt9tBjT sEHxumPC8RyT1JXSs9pU+skGYv48JKO3+UF+txbLyC5bEAQMmQG6rLH322zDEVXiazZwBFN3jIs h9MGUnSLhybsasrQE/XQi8hj+88oQHxCnLy0Q9NxI+QMX5671STW2S55yVOyAOe3DpLciAcJmkE L10IXDqFb314iWtqcaY6ktdvAYuq7iO5LbrE0ObR+rsp07QrE83SuTiJmjjLGV94V+sBCbrgDs3 o318o6w6yBNndTcewNQ== X-Proofpoint-GUID: 5gVKByFxIsPlZpVjo8r0ofiSUSkdv9Z8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-16_09,2026-01-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 phishscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601170052 As in the previous generations, on UBWC 5.x and 6.x devices the Highest Bank Bit value should be programmed into the hardware with the offset of -13. Correct the value written into the register to prevent unpredictable results. Fixes: 227d4ce0b09e ("drm/msm: Offset MDSS HBB value by 13") Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/msm_mdss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c index bf9a33e925ac..910242f5a71f 100644 --- a/drivers/gpu/drm/msm/msm_mdss.c +++ b/drivers/gpu/drm/msm/msm_mdss.c @@ -229,7 +229,7 @@ static void msm_mdss_setup_ubwc_dec_50(struct msm_mdss = *msm_mdss) { const struct qcom_ubwc_cfg_data *data =3D msm_mdss->mdss_data; u32 value =3D MDSS_UBWC_STATIC_UBWC_SWIZZLE(data->ubwc_swizzle) | - MDSS_UBWC_STATIC_HIGHEST_BANK_BIT(data->highest_bank_bit); + MDSS_UBWC_STATIC_HIGHEST_BANK_BIT(data->highest_bank_bit - 13); =20 if (data->ubwc_bank_spread) value |=3D MDSS_UBWC_STATIC_UBWC_BANK_SPREAD; --=20 2.47.3