From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 16C0213AA2A; Mon, 5 Aug 2024 05:14:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722834889; cv=none; b=uLlmpG6jfI6VqA5XkPS1ics/h7sOzK1qlkaFm+V/1R3cVUvB2rCu2sXyaz3gQAJkofWbWLTUdFCtq8exTAdX3wuIHBHiVSwpFeuyjWAyIj4/Y74XqdnefX2F5qbMivFGTjZoNmJQQ4Cr4XAWUYV36GTVaV0BvE1Bt2UVV/ahSf8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722834889; c=relaxed/simple; bh=0G4aoTe1JXhYoa0T34uGuP6CCWlSlEjLdv6MWJ0CY8E=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lGil/7o5GrkteWPu3g1mAItGI2xEA7UGOQVRIA0EMtt6SQlo4YxZSnIwZWkwC8pSgyTR28lDMjaaAE2CczmUF5Gugn7V1c6Djq8XEJ9kK55/ZSDfNpCbDhUc+ZVy/YpqDCwRVcxYFzisKFdSlHBKqPKk7BJwxzHclQhKw4iYCns= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FQrSf6XB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FQrSf6XB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EB05C32782; Mon, 5 Aug 2024 05:14:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722834888; bh=0G4aoTe1JXhYoa0T34uGuP6CCWlSlEjLdv6MWJ0CY8E=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=FQrSf6XBmf5f1hJDuLLdOIXyxNCjRttKZfAHDZoaXFTsTIS1fLQE8ZTgKanJvFVTc UF1AmioM8qRHn6rx7Tvr6s3at1rX34W7ciqQ1NbLEuLP68ChbNnDkQSCpqP89nPqL/ Z2iPYv9m1WrOTNS82jaOu84sYneV1YJXUv3Gfk533/FLH+tQYvrDBQM9w0o8OQxEDY 1zAS9XjzN+T1MfUiTp0IaGNFTfALkKiMsmMuGrUl84BBEnEBAM+KrADVs8RaX6b6RD bAdwSQHfdhJzzRIr1r1sDt+yKiCZ7HmT5k6AMDUuWHjZxV+UAam5PbldGMp/wn36kx 5dvWULeXF9UTA== Message-ID: <58317fe2-fbea-400e-bd1d-8e64d1311010@kernel.org> Date: Mon, 5 Aug 2024 07:14:41 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/8] dt-bindings: PCI: Add binding for qps615 To: Krishna Chaitanya Chundru , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Krzysztof Kozlowski , Conor Dooley , Konrad Dybcio , cros-qcom-dts-watchers@chromium.org, Bartosz Golaszewski , Jingoo Han , Manivannan Sadhasivam Cc: andersson@kernel.org, quic_vbadigan@quicinc.com, linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski References: <20240803-qps615-v2-0-9560b7c71369@quicinc.com> <20240803-qps615-v2-1-9560b7c71369@quicinc.com> <5f65905c-f1e4-4f52-ba7c-10c1a4892e30@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 05/08/2024 06:11, Krishna Chaitanya Chundru wrote: >>> + >>> + qcom,nfts: >>> + $ref: /schemas/types.yaml#/definitions/uint8 >>> + description: >>> + Fast Training Sequence (FTS) is the mechanism that >>> + is used for bit and Symbol lock. >> >> What are the values? Why this is uint8? >> > These represents number of fast training sequence and doesn't have > any units and the maximum value for this is 0xFF only so we used > uint8. >> You described the desired Linux feature or behavior, not the actual >> hardware. The bindings are about the latter, so instead you need to >> rephrase the property and its description to match actual hardware >> capabilities/features/configuration etc. > ack. >> >>> + >>> +allOf: >>> + - $ref: /schemas/pci/pci-bus-common.yaml# >>> + - if: >>> + properties: >>> + compatible: >>> + contains: >>> + const: pci1179,0623 >>> + required: >>> + - compatible >> >> Why do you have entire if? You do not have multiple variants, drop. >> > The child nodes also referencing the qcom,qps615.yaml# node, I tried > to use this way to say "the below properties are for the required for > parent and optional for child". I don't understand how child device can be exactly the same as parent device. How does it look in terms of hardware? Pins and supplies? >>> + then: >>> + required: >>> + - vdd18-supply >>> + - vdd09-supply >>> + - vddc-supply >>> + - vddio1-supply >>> + - vddio2-supply >>> + - vddio18-supply >>> + - qcom,qps615-controller >>> + - reset-gpios >>> + >>> +patternProperties: >>> + "@1?[0-9a-f](,[0-7])?$": >>> + type: object >>> + $ref: qcom,qps615.yaml# >>> + additionalProperties: true >> >> Nope, drop pattern Properties or explain what is this. >> > the child nodes represent the downstream ports of the PCIe > switch which wants to use same properties that is why > I tried to use this pattern properties. Downstream port is not the same as device. Why downstream port has the same supplies? To which pins are they connected? Best regards, Krzysztof