From patchwork Wed Dec 18 10:26:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashanth K X-Patchwork-Id: 852121 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 83C1D1ACEAB; Wed, 18 Dec 2024 10:28:16 +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=1734517698; cv=none; b=pdtIOGyVmoU76ENNv3Va7rzu+VrZDWbgtPM2xrsjPle+VgqMMwo9UBR1hFDFkoAK7W/eSwFPC1ra16m+1aEICHvKEMElyAdBWhRo/flr8kHMWQ8WQ3ohxxOSyLBE7q9HItH8zWQ/FkjP1BZggiYFgWBm55lFHzmNiBI1+bV/Tm0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734517698; c=relaxed/simple; bh=ofyRSonLXT8fis1bet/Hm5NcuwN+lysdM9mSk8cEZuE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=kxxp8/p7SBt6gEYR0+4xvIV67QhhFTO+rzZfXVUa3RumhnIjRpudR3ok7lJL7Yn8XA2GOPWyMtyEoY5xzvpSHIpcBZf68ynx9wTfKg34BjXO91T2RPh4h8o2jGed+h12BLp4DYcV1lDMpSOzgotTuOYpQQWJXdrjoCXUBJhR/fw= 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=h1HL7ibk; 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="h1HL7ibk" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4BI85ZHd008787; Wed, 18 Dec 2024 10:28:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= +RVJL4HBhahopLmtymMGRq2BGqLPpHUfSlNGlc1AYkU=; b=h1HL7ibkdysYeIkm tz7Ngr85RErMCgeypbO4ZBYBvvE69vZnl/OQGrd8hEbqj8zhg6Gq1E1IWQTB7QGs 441lWU8WGvVw5aWqZdix7h3tAPfuV95NuBcLVgGpSqX9Kitxkqgh4pyP6/Ph61rZ fIf4Lc2zJTUJIZbZ7yTuH3AQlLOsBuU2YcR6WI5345JAV+R7dEt+ixvg6wqr8534 t4mgb1HE5ZWjb7lLba8LGNxG/VxiAMwFZ4wbz/RNJO9m46GohF3mU3WbIfbRqd6h wsqnfpIl8i5dyOW/b745mWptwiw4dyW7SpW1OHQAO9spX3CuszqSrdn5b2jIEuDI pf9GVA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 43ktk2gc8u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Dec 2024 10:28:13 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4BIASCXT011614 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 18 Dec 2024 10:28:12 GMT Received: from hu-prashk-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 18 Dec 2024 02:28:08 -0800 From: Prashanth K To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Kurapati CC: , , , , Prashanth K Subject: [PATCH v3 09/19] arm64: dts: qcom: Disable USB U1/U2 entry for SDM630 Date: Wed, 18 Dec 2024 15:56:57 +0530 Message-ID: <20241218102707.76272-10-quic_prashk@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241218102707.76272-1-quic_prashk@quicinc.com> References: <20241218102707.76272-1-quic_prashk@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: aYOIQoG5o1dGDfLXwhvLSfQ3QYjNG9nS X-Proofpoint-ORIG-GUID: aYOIQoG5o1dGDfLXwhvLSfQ3QYjNG9nS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=502 clxscore=1015 adultscore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 spamscore=0 priorityscore=1501 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412180084 Disable U1 and U2 power-saving states to improve stability of USB. These low-power link states, designed to reduce power consumption during idle periods, can cause issues in latency-sensitive or high throughput use cases. Over the years, some of the issues seen are as follows: 1. In device mode of operation, when UVC is active, enabling U1/U2 is sometimes causing packets drops due to delay in entry/exit of intermittent these low power states. These packet drops are often reflected as missed isochronous transfers, as the controller wasn't able to send packet in that microframe interval and hence glitches are seen on the final transmitted video output. 2. On older targets like SM8150/SM8250/SM8350, there have been throughput issues seen during tethering use cases. Disabling these intermittent power states enhances device stability without affecting power usage. Signed-off-by: Prashanth K --- arch/arm64/boot/dts/qcom/sdm630.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm630.dtsi b/arch/arm64/boot/dts/qcom/sdm630.dtsi index 19420cfdadf1..a2c079bac1a7 100644 --- a/arch/arm64/boot/dts/qcom/sdm630.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm630.dtsi @@ -1300,6 +1300,8 @@ usb3_dwc3: usb@a800000 { snps,dis_u2_susphy_quirk; snps,dis_enblslpm_quirk; snps,parkmode-disable-ss-quirk; + snps,dis-u1-entry-quirk; + snps,dis-u2-entry-quirk; phys = <&qusb2phy0>, <&usb3_qmpphy>; phy-names = "usb2-phy", "usb3-phy"; @@ -1505,6 +1507,8 @@ usb2_dwc3: usb@c200000 { interrupts = ; snps,dis_u2_susphy_quirk; snps,dis_enblslpm_quirk; + snps,dis-u1-entry-quirk; + snps,dis-u2-entry-quirk; /* This is the HS-only host */ maximum-speed = "high-speed";