From mboxrd@z Thu Jan 1 00:00:00 1970 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 285E021C167 for ; Mon, 8 Sep 2025 11:00:26 +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=1757329228; cv=none; b=sxv0N45XpPXE3C6gLJ0HcEjPuuQEPNKKoj7DOdfyBw6XghJCk1XrELTGqUaxwa81m1CZmYPAv3TCOY1IE7BBBaLdDe96neodieaUdAtAxx9mlEDLzqb4fAnNh3ZnvWJeWJZChB4Vf78fKKXhvnEFXl5+ib43LaKVo/PHSRuiYzY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757329228; c=relaxed/simple; bh=G/Ba14Phk+5myP3ahXki98RYdzJiFF5Mu8FGZGklI4w=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=eCovGXgmMKFnw/9s98VCtmOVVGiDZHYed59+Noj0MC5TYF3QGKm/EBFV1ivQ68MdCoTNRMCwYx1lfERBvsAFlgtifxTEMDeCOGgMqw4633dPMVDjPx16Gin2vAARAHraW2Evc/hJHcHqY98NVZwrTCvJQhxDMTl/n3PjYF5RJ9U= 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=Owp8rU9F; 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="Owp8rU9F" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 58892tom008905 for ; Mon, 8 Sep 2025 11:00:25 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= SYd+/4tBi4uRuiBSAgW74S/nrmFmbZ9KidZtEig3lzk=; b=Owp8rU9Fn8ikQEhI 71aF6aQZEr8vQ0H/3EVViSDOwCFQYIVGwlEn9vyKBKE72WlMg6uRNkO66TtczNVq 312EV6MBrCSyqCNXnbTp6HLH7jSnQlp6ahrQCYqqGWegrVDr/nFRL6two33iEhur h6pzoqvwD/FduGTWCkNKjrs/X0/79cQ5GsTw+Ns1FaTbd04ixEUPDkdHjmZ+yb1H jkz+3R2oWOJwPtjLbmBa3/9mnIJfVSpYpXOG94WpNoNRwCxspTxFv7sT/x+hZyvs 2m0bYgGWEjPi18sqQIgTEHrUjp1PdOJVLpknu9V94k/xdZSuToIljZOayMlmcouX geVGMw== Received: from mail-pl1-f197.google.com (mail-pl1-f197.google.com [209.85.214.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 490by8vcqg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 08 Sep 2025 11:00:24 +0000 (GMT) Received: by mail-pl1-f197.google.com with SMTP id d9443c01a7336-244581953b8so47980705ad.2 for ; Mon, 08 Sep 2025 04:00:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1757329216; x=1757934016; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=SYd+/4tBi4uRuiBSAgW74S/nrmFmbZ9KidZtEig3lzk=; b=jKrd2a2b1Gi4xi6TJDPr89RvFyU8eq8GjQZrIIPSI/mxTgS6/Vz5+/WYErLHbN/XCf zvXlDMdxmETlWwk6X9C7akH4LuKRSG4YmKXD1Y4hQJWiJn7nU2zFBv3hrOhrFiSeu6NQ lToB84xm9mNW+TFO9HriEVZgGvog93luH7VzpYgX5LWKaX5PnsuCjqfpXeOZkrcYfKb+ u/e/CzAu6fmqrt+YlgXkh585nW8XUYAR1cFwuhgy/pmSr6ccxfhP26djpyJpk1+qJZiM yOm5Py4MOxY/LwsK/cAetZxeDd7PL+g3gA/PNU8zFFvMpC0yPfmLmPPiiqMZop3XQ08C a/LA== X-Forwarded-Encrypted: i=1; AJvYcCU8e16uCw+LbuFa8AFhFSLNgI0EElw26WlTjEILpq/DgSajO0zvwZNFoHtqGHDkl890i4Zp2JAXWpwEqo4=@vger.kernel.org X-Gm-Message-State: AOJu0Yx35TWENickM1p6OTH6NTyZiX24Gxmxelpj3azoDfsfJBwNwzs3 /lLU0i1Jb7OjuG0lISonSfRPqE12nedSEiX3xtJcaj+6R25a79KP8qJUU2x2kBCAzyaBrH3dH+v FUncUYJdqxtVP4eexQrQhomOQXoQAYEXdLkPPE8xW4h26fcx5hQtioFml9EY5EmuqK3I= X-Gm-Gg: ASbGncu+PIErmdWZoDgAQ0v5RMg6t5bPSCIru432mo3UyhfFrLWMAOXqhXUjrd+tebB XapkteBCCD4IVrzI5jfNTCsu4C3PwAJ2oJg8QctYNqhRIJalqhfmLbFv++BU+rJdrWuENfCpZ2s O/fLLwysiasnofezhyAIgHKnCcRGWaAnzNi7QySGVq8TTMJ9SUOokSWMipa/+etoRz2JQIMLZtG c/4z5yA3LkpgNmNf//dhF8XJSTW7X4aVzh3eUONdgSU280n3gOvy4xhKkbhLLDs+jKirryRz/V8 41M0460dsjgxhqvDgLpkzGFpbOrPczj4zCQRGuBlZ3nuFBBBVWKDRHgirzVdiaXPYdEflXpzOio YhW5AZZ83XoEoavauDFJK1yR02Gu0dsw= X-Received: by 2002:a17:90b:3fc4:b0:32b:60b2:5fc6 with SMTP id 98e67ed59e1d1-32d43f9568bmr9615694a91.18.1757329215729; Mon, 08 Sep 2025 04:00:15 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF7lI3U3SPCn+R/cTeBjZmrLv2/beqgvDHxI/eyb2oUf8c78PZXedihCbA+yCj1T6jDeNNjYw== X-Received: by 2002:a17:90b:3fc4:b0:32b:60b2:5fc6 with SMTP id 98e67ed59e1d1-32d43f9568bmr9615630a91.18.1757329215136; Mon, 08 Sep 2025 04:00:15 -0700 (PDT) Received: from [10.133.33.101] (tpe-colo-wan-fw-bordernet.qualcomm.com. [103.229.16.4]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-32d89f32ebfsm2430310a91.0.2025.09.08.04.00.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Sep 2025 04:00:14 -0700 (PDT) Message-ID: Date: Mon, 8 Sep 2025 19:00:05 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 2/6] dt-bindings: display/msm: dp-controller: document QCS8300 compatible To: Dmitry Baryshkov Cc: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Kuogee Hsieh , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250904-qcs8300_mdss-v11-0-bc8761964d76@oss.qualcomm.com> <20250904-qcs8300_mdss-v11-2-bc8761964d76@oss.qualcomm.com> <69219cdd-bcca-4673-9a81-084184fda6db@oss.qualcomm.com> Content-Language: en-US From: Yongxing Mou In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=Yv8PR5YX c=1 sm=1 tr=0 ts=68beb748 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=gsM-oFm3a_Sh21p_ijEA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-GUID: fvSH6ZSt89DHv-oxFRmXB1KjeLvR0vXZ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAxOCBTYWx0ZWRfX4F1sx5VnugSA 19pU43tb9akHOwcmqC6IiWfIyMVWFl009ywBJGO3+FIuQJiKaAQwQnGsoFyojmdfAa4vm2Qthem xqH3BaaGoOUeQByAw2QeeyA2ZbEJ2DdPYnZ6rQ8Kuf7gvOcg+McvlL9XadDFWRv6PcdLsEYv2lq 9aosVEGfRCXJqVM+jD/6TN5XQkfqnv7iEZrWeA9fqKJ2FUl7kTkSWVNSpjrilY5fA3YXmokWj+S qeRsISTBwafjzQlnF43D9Cnp9FZ6g8cnSZO+Iv8eolXmLFT4ihk+/3l4M9KsXYSFHrJr0jnGBYT PV3stMZVNKulMxiDGwWe5ts4uox5p8ByrFNg0YQZIXPDwUZo/MJWZgl75UvtkRB7WhFZG5auVjd VGdLfV7p X-Proofpoint-ORIG-GUID: fvSH6ZSt89DHv-oxFRmXB1KjeLvR0vXZ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-08_04,2025-09-08_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 suspectscore=0 phishscore=0 clxscore=1015 spamscore=0 priorityscore=1501 impostorscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060018 On 9/8/2025 6:04 PM, Dmitry Baryshkov wrote: > On Mon, Sep 08, 2025 at 05:46:30PM +0800, Yongxing Mou wrote: >> >> >> On 9/5/2025 9:48 PM, Dmitry Baryshkov wrote: >>> On Fri, Sep 05, 2025 at 10:50:33AM +0800, Yongxing Mou wrote: >>>> >>>> >>>> On 9/4/2025 9:43 PM, Dmitry Baryshkov wrote: >>>>> On Thu, Sep 04, 2025 at 03:22:37PM +0800, Yongxing Mou wrote: >>>>>> Add compatible string for the DisplayPort controller found on the >>>>>> Qualcomm QCS8300 SoC. >>>>>> >>>>>> The Qualcomm QCS8300 platform comes with one DisplayPort controller >>>>>> that supports 4 MST streams. >>>>>> >>>>>> Signed-off-by: Yongxing Mou >>>>>> --- >>>>>> .../bindings/display/msm/dp-controller.yaml | 22 ++++++++++++++++++++++ >>>>>> 1 file changed, 22 insertions(+) >>>>>> >>>>>> diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>>>>> index aeb4e4f36044a0ff1e78ad47b867e232b21df509..ad08fd11588c45698f7e63ecc3218a749fc8ca67 100644 >>>>>> --- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>>>>> +++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>>>>> @@ -18,6 +18,7 @@ properties: >>>>>> compatible: >>>>>> oneOf: >>>>>> - enum: >>>>>> + - qcom,qcs8300-dp >>>>> >>>>> Can we use fallback to qcom,sa8775p-dp instead of declaring a completely >>>>> new one? >>>>> >>>> I think we can not use fallback to sa8775p, since we don't have DP1 >>>> controller for QCS8300. SA8775P actually have 4 DP controllers (now only 2 >>>> really used). So in the hardware, i think it is different with SA8775P and >>>> we need a new one.>> - qcom,sa8775p-dp >>> >>> The DP controller is the same as the one present on SA8775P. >>> >> Yes, it is same.. I just want to confirm again—even if we only need DP0 for >> QCS8300, we can also use sa8775p as fallback, right? > > What makes you think that we can't? Let me repharse the question: which > part of DP controller (single one) on QCS8300 is incompatible with the > DP controller on SA8775P? > Sure.. got this point.. will update next version.. for the single one , they are same... Thanks.>> >> static const struct msm_dp_desc msm_dp_desc_sa8775p[] = { >> { .io_start = 0x0af54000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported >> = true }, >> { .io_start = 0x0af5c000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported >> = true }, >> { .io_start = 0x22154000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported >> = true }, >> { .io_start = 0x2215c000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported >> = true }, >> {} >> }; >> .mst_streams = 4 is suitable for both QCS8300 and SA8775P DP 0 here. >> >> Previously, my understanding here was that we might need a new compatible >> for QCS8300. >> >> Thanks~~>>>> - qcom,sc7180-dp >>>>>> - qcom,sc7280-dp >>> >> >