From patchwork Thu Feb 6 11:15:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Kumar X-Patchwork-Id: 862943 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 341EC46BF; Thu, 6 Feb 2025 11:16:17 +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=1738840579; cv=none; b=ZwvmXR1Q2TwYb0A5Eve0s04La6ST6mXu1aOHMZermu6k8k7BWFgv6mQj9SrB0hjdP9PXR8mhuXbuxNVqAvX2ebWI2tCsjGK9QLOtr0j1vW0JDY1OUSxg5BOdJ8NtNIivxBoiGZXVrAf9B0j6+ptaCB+2Q2TyLLiqm7JAEi7iLY0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738840579; c=relaxed/simple; bh=lZlj0tm43siYbSBXyKlzgDvp+YGdKBp3z7Siz9fTpFE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WizLpbcPObkUp1ukZYQ1+9i7uh9YCGZLWOj0Xf0QAySBze0FHwbxEVwRYUYU585qxbs2lnfok1BtG4xSIF17Ya1b4vtT+XCLrtKHxEUMIQFzxxA4R+pUo2JHIlZesc4EZpFBPfb1tdtEtzXWrZRv+JlXavqaA7eDjLH3TVRxK4k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=VgVC7LD8; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="VgVC7LD8" Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 516AES2R021985; Thu, 6 Feb 2025 11:16:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=JbhsLWjnrEZW9Cujvt2qHprj 1MSkff69H7zdTBdnURg=; b=VgVC7LD8mSVEqWNuxOFPkcuW6uN+iewuZ7TLjryl +hRsryBvCFSlWE5IabTcOo3HE9b4HQ9cdguCxGSi3wFF8svq3vPnhQx1t554Bi6R e9wCHkJjc5sOIZdb2nE6B3dgTYKmF7h8ymjKFRTE2/ZqPkG6edDBObKo59xDx0Eb cwBVJI7ZWrHax/elYMb0xD9MWsI9pafuhx7xCQP39qZXqn3upHfgiTOCaU20Voqh LIjWBMFGDbvAoFZIEaPsilIV1sDJRrPbM5xZwfnzZv8kUqfGNu9gBUikQQQP8v8R H6qYdFVb8eDoToXk/efM1p1a8lQt2IbiNYwv6kyBsxAsew== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 44mu5gg4gy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 06 Feb 2025 11:16:12 +0000 (GMT) Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 516BGBiI008535 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 6 Feb 2025 11:16:11 GMT Received: from hu-akakum-hyd.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 6 Feb 2025 03:16:07 -0800 From: Akash Kumar To: Thinh Nguyen , Greg Kroah-Hartman , Jack Pham , , Wesley Cheng CC: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Vijayavardhan Vennapusa" , , , Akash Kumar Subject: [PATCH 02/18] arm64: dts: qcom: sa8775p: Enable high bandwidth for hs isoc eps Date: Thu, 6 Feb 2025 16:45:27 +0530 Message-ID: <20250206111543.17392-3-quic_akakum@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250206111543.17392-1-quic_akakum@quicinc.com> References: <20250206111543.17392-1-quic_akakum@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: lC0nzx8NPTDpxRvcHgT0CgyMwmKs4v2S X-Proofpoint-GUID: lC0nzx8NPTDpxRvcHgT0CgyMwmKs4v2S X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-06_03,2025-02-05_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 phishscore=0 impostorscore=0 mlxlogscore=926 suspectscore=0 mlxscore=0 bulkscore=0 adultscore=0 clxscore=1015 priorityscore=1501 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2501170000 definitions=main-2502060093 It is observed while testing multiple audio devices, a glitch is observed during testing. As per dwc datasheet,By default, HC reserves 80% of the bandwidth for periodic EPs. Add quirk to set GUCTL BIT 16 to accommodate higher bandwidth for 2 isoc eps. If this bit is set, the bandwidth is relaxed to 85% to accommodate two high speed, high bandwidth ISOC EPs. USB 2.0 required 80% bandwidth allocated for ISOC traffic. If two High-bandwidth ISOC devices (HD Webcams) are connected, and if each requires 1024-bytes X 3 packets per Micro-Frame, then the bandwidth required is around 82%. If this bit is set, then it is possible to connect two Webcams of 1024bytes X 3 paylod per Micro-Frame each. Otherwise, you may have to reduce the resolution of the Webcams. This bit is valid in Host and DRD configuration and is used in host mode operation only. USe this quirk to set bit for host mode uvc uac usecases where two isoc eps are used and flicker is seen. Signed-off-by: Akash Kumar --- arch/arm64/boot/dts/qcom/sa8775p.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi index 3394ae2d1300..230b432cc3ac 100644 --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi @@ -3431,6 +3431,7 @@ phy-names = "usb2-phy", "usb3-phy"; snps,dis-u1-entry-quirk; snps,dis-u2-entry-quirk; + snps,dwc3_guctl_resbwhseps_quirk; }; }; @@ -3522,6 +3523,7 @@ phy-names = "usb2-phy", "usb3-phy"; snps,dis-u1-entry-quirk; snps,dis-u2-entry-quirk; + snps,dwc3_guctl_resbwhseps_quirk; }; }; @@ -3587,6 +3589,7 @@ phy-names = "usb2-phy"; snps,dis-u1-entry-quirk; snps,dis-u2-entry-quirk; + snps,dwc3_guctl_resbwhseps_quirk; }; };