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 2B8B530E836 for ; Thu, 6 Nov 2025 14:07:45 +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=1762438066; cv=none; b=EwsrGSYt8XfzyJNY+kzX1RPTKwuqlL+WJcbe07qPdjeKfgA/LnYsPrQ5K/Jt/vJTKBGX6bK8WM6uph/Uo0/0k6t04TCrg79LfIJZJ3Qr1pZA3ScwDebr0Kley4JYFKwvxO5Ka3TDseFGakoh8pvBmVXqTj5R/TCtgIoAhEVGrNY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762438066; c=relaxed/simple; bh=SOccKiy5Rdbr6pq6sB0mWtUflMzLr3rVH64LwrFeOVU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IvmC/N83fqq6fyBZmxBakHm6+7wAThqSoEzCzrOhrhcyR2KxGwKz3u4dRT9h4UQ9ciQBdeakPUHMWRf02uuglKbhmWadu0T8vV7dqIz4VNkUegjGuOEiraeufRHjB7xrZDJmVYDMOrcpYbWY/fjgM2QDy0ahfmX51h5qik2o/Ws= 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=QQvZ+d5A; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=crdGjc9H; 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="QQvZ+d5A"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="crdGjc9H" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 5A68c2Ji2326856 for ; Thu, 6 Nov 2025 14:07:44 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= zlBnzVB5nxzy+Z7vwR/dqDEVVZyIcEzuFRGM+j8huts=; b=QQvZ+d5AIl179X7G oNgzd+fA/TENVGJ6bfTJwJZJ2yI0qR6nhARxOCIwxPl4eTZu/+OvD6EYlwjMt4mb 0lSfkkyv7HTPsm+GAcwHINSubnm0wC9DdsNRaHJ/b7buC1badIHer5IQo0THbteL ZRup+VGq/Q5Uftg76iR8Ex583V3FIXh0UeKpkcF6YEKnHOAH2ZIcul8oMf9kej5E v7yLps1O5kXDHyZphCBXtBc6Hrpf423CHqwjkh93na6EK1hyS06PldPIkOENV0Xh RDA0BdingP6TbQwmPkGXi6sYApeIg7SxcqSpxDR0t0o8bloYfL18abGs39KWqXTZ eTS6ew== Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4a8h0v23uk-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 06 Nov 2025 14:07:43 +0000 (GMT) Received: by mail-pj1-f71.google.com with SMTP id 98e67ed59e1d1-342701608e2so597769a91.1 for ; Thu, 06 Nov 2025 06:07:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1762438063; x=1763042863; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=zlBnzVB5nxzy+Z7vwR/dqDEVVZyIcEzuFRGM+j8huts=; b=crdGjc9HnTa+VhBHLl6fkq3p69JScJaWrIyXbqpGD3cikY9LhXxEeTU0RQ2iISBSxb w9mo21SWpmFZva0uLXopf+1pMnDluY3+s4WaYiP5+LpMkjbZZapH/wSBhOWpsbRpE/kD mO1Y9UYJRi1JIKYu/S9RbvoIibPxSSrnLBH7VnXXAHBZMHA/iYaxocs9xL2RUNN4g/BL GC/iYbwHuOeQxRr2q1Lvstgo8fMfY5H9i+je+C7KkUIZBeHg7n83L7Ydw8StETtQjRfz kZtP1CSbtMYUkroAlCkLvAe2lcCqLHq+af7E33ACMN779H1L5MSlKPgqHQg2t8yDQ9+S GDxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762438063; x=1763042863; 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=zlBnzVB5nxzy+Z7vwR/dqDEVVZyIcEzuFRGM+j8huts=; b=R+v3OJLfcDirM4JxGag4/XD7Qtc7LOKPOUlQOn8UdCgMcJWzIdgmBwIFT1mvEXhEjj uEkoIhUHpGWKT+Uz2SUqqi3+CgfkPP8JnEYCHpITvWoOz7LmEls+NX0IYF4rB0BFXvgT uFdmbF4LnQQcqh9G1nK6gjN7tNngncy+auWTT681S5fY3eeB/dANg4y4gBYwXSbo0ndf d7TC+6i8IpsraaPZn+3zk/vKqeTaOLItjOzcs33F0KwwzGhJ7SPTfsMofQAAVDCQ/gCi 2WYjx4CXUlJ9abfDT7f97Y1cOhCAeRSDqoO+zgFHK1AvwDoYxs+7pWzMFFqTB4GF+Tfp fhqA== X-Forwarded-Encrypted: i=1; AJvYcCV1YixF0eAENjWgx/5t7XIQIJ35CthBchrsSNbQiwAkt85rU63DJMye1/AwCXM0lLMdSs52XaH59dMaDz4=@vger.kernel.org X-Gm-Message-State: AOJu0YzntXXIMwjum+EHBQC++NxfpCuxHfd4AQTo8eE2BJSJv0z7vaBx DMRkkL7BZ5UMfjBh47viHtB75b1rAFFsZBY8Dq+W0M+7PK/h5quEwRwQlWwMhlX5A5vSg6FpZpc VAupNFhyevev8ZpeJu4mECMOahs/j5qrXeZDAK+JHCyRjNuzUzu7mAXj4++znstNgV+s= X-Gm-Gg: ASbGncvi0q4h5lb5nXmqyQme+yRTKU8ndmsKA1mq7zCH5MCGpxTifuo4XMokpRSYbkX 0s/leu9+IC0EiMdvhpCnDOQwgO3IenjzH+ifUNpN4AJrsPn1HTroEGpA/P9tcZ0tu3S+tQq/kaD glMtlf3VQXU+oMxab6RlAo864+uHsRL4ydBL98fMQ/nzZdUD+nsowwH5TVJrhPNlND+7Jwnqrw/ CXImOi89HQ22CzW1/W4q6slg+qq0wW/PFN9tLxCyQ1ih86iqwPD8JzuTM8XxwGo7E6ewHSDzhn9 /TodoZYjRtTxA4cjgIq4G/BqjFjJWN0S+wMJ8ri+D6ApdSJXya5elG+ItucP06km7K4XP4XEPfH 9FTYJWg3w0tsY00+JkaKSV2F6E4yNa4ggBQ== X-Received: by 2002:a17:90b:4b83:b0:340:ff89:8b63 with SMTP id 98e67ed59e1d1-341a6dd839cmr7917842a91.22.1762438062802; Thu, 06 Nov 2025 06:07:42 -0800 (PST) X-Google-Smtp-Source: AGHT+IFb5xADXggWF7dRNeF7sG95acRl1JztjRAlFJmaO2OvQU/vqH3pUikfwbJOHiUbUbKUov+t3Q== X-Received: by 2002:a17:90b:4b83:b0:340:ff89:8b63 with SMTP id 98e67ed59e1d1-341a6dd839cmr7917764a91.22.1762438062062; Thu, 06 Nov 2025 06:07:42 -0800 (PST) Received: from [192.168.29.63] ([49.43.224.132]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-341d0daabd1sm1131993a91.8.2025.11.06.06.07.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Nov 2025 06:07:41 -0800 (PST) Message-ID: <96c49d08-10dd-4a82-a6ec-345701b771d6@oss.qualcomm.com> Date: Thu, 6 Nov 2025 19:37:32 +0530 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] schemas: pci: Document PCIe T_POWER_ON To: Manivannan Sadhasivam Cc: andersson@kernel.org, robh@kernel.org, manivannan.sadhasivam@linaro.org, krzk@kernel.org, helgaas@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, lpieralisi@kernel.org, kw@linux.com, conor+dt@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree-spec@vger.kernel.org, quic_vbadigan@quicinc.com References: <20251106113951.844312-1-krishna.chundru@oss.qualcomm.com> <7v5bmbke37qy7e5qns7j7sjlcutdu53nbutgfo6tn47qkojxjy@phwcchh5gs5q> Content-Language: en-US From: Krishna Chaitanya Chundru In-Reply-To: <7v5bmbke37qy7e5qns7j7sjlcutdu53nbutgfo6tn47qkojxjy@phwcchh5gs5q> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: PJgplKdXPCQFEhVZckEIwMhveTwoY8Vb X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA2MDExMiBTYWx0ZWRfXx2rYvbaNmBik ZdXK6tCtBjGnIXo+RgvV1RennK4jiHI3UAcXk4d2YBoXTMgPjQUZiLXkbd8HZgmNDmmGqGb5X5j 0IGDkt344mkM/46fp3a+mGkRroXYAkUafk4WNNdEPEF1/Flk201on8p7M40jv6vmz0SEWSx9Kcc zzWOA4Rye3Ey9pwm5Zf7SZCqlM4eZkHJT1Im8kwu2fTsACvMj+tBhrfKQXLNVq+IhMk+ZAiLcD1 VJkMWVQSQitG39XYK0/eistsD8vT5E/bfxHLpWnoaLGaF8a8MeZnes0sUwRZoWKMPr1YpPydP1g +P4bTAOWDcmfZR05FT82RIAAtcV/r34dmHwQ/wcDmlxUSwCpCW4hL8yNCYDM5JpItUZ+3xP7FFB pZGM2647zIu+D+v9BoR3D3YgIC/mXg== X-Proofpoint-GUID: PJgplKdXPCQFEhVZckEIwMhveTwoY8Vb X-Authority-Analysis: v=2.4 cv=PoyergM3 c=1 sm=1 tr=0 ts=690cabaf cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=1uN4TIezCBQZsvcDmGHwSQ==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0lSf4L86Ka8fYzTnLDIA:9 a=QEXdDO2ut3YA:10 a=uKXjsCUrEbL0IQVhDsJ9:22 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=2025-11-06_03,2025-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 phishscore=0 spamscore=0 adultscore=0 impostorscore=0 malwarescore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511060112 On 11/6/2025 6:08 PM, Manivannan Sadhasivam wrote: > On Thu, Nov 06, 2025 at 05:09:51PM +0530, Krishna Chaitanya Chundru wrote: >> From PCIe r6, sec 5.5.4 & sec 5.5.5 T POWER_ON is the minimum amount > T_POWER_ON > > You should provide reference to the Table 5-11, where T_POWER_ON is described Actually 5.5.5 section has only table 5-11 which describes this, I will add the Table 5-11 reference also in next patch. >> of time > "(in us)" > >> that each component must wait in L1.2.Exit after sampling CLKREQ# >> asserted before actively driving the interface to ensure no device is ever >> actively driving into an unpowered component and these values are based on >> the components and AC coupling capacitors used in the connection linking >> the two components. >> >> Certain controllers may need to program this before enumeration, such >> controllers can use this property to program it. >> > I'd remove this statement and just mention that this property should be used to > indicate the T_POWER_ON for each Root Port. ack. - Krishna Chaitanya. > - Mani >