From patchwork Mon Dec 9 15:30:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalle Valo X-Patchwork-Id: 13899972 X-Patchwork-Delegate: quic_jjohnson@quicinc.com 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 39FE11BEF7D; Mon, 9 Dec 2024 15:30:38 +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=1733758239; cv=none; b=Qlla/2yow1V2CN9O74UKEZ94ZYQ3mNYoW5RgiA+Ti4fKr2OjsyjI7S5dcMNn+h0qYyY5DQe209AQptpmYbejOxNv5OWWbYFpqAhr090K7Y17sMmB3K0Y+OYtTOd6+7Zr5ot7pUQDcOUWV87Y890t9eQz8D+0oIC1v4A8Q1fpAtA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733758239; c=relaxed/simple; bh=e9WSZvVMzILRMJOu0NThf7D3Et045XEjYOPkTYEM8Ho=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RP/EPdVPvmKqy7E+ydyIgNKPrV0YMkaGHpnSYRJP0or/o9Y5GOBchSimBsnsaQ5MR9tk2x8Hbge3dE3P9R4Y6S91S0+g4oOiFWC3ISKqf133MtrGAGlHto9f5TT5/Jb9pa3T27Vjcw1BOUCby8ghSNhhjHF9dD1PF65xqxhC6e0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RqLVJWdj; 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="RqLVJWdj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2EE7C4CED1; Mon, 9 Dec 2024 15:30:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733758238; bh=e9WSZvVMzILRMJOu0NThf7D3Et045XEjYOPkTYEM8Ho=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RqLVJWdjEk0YslqvYuvOX/PVho3/hhjj8+cb5D4nyX96+Ioay+tapZzFVGfJgYGlH xXeEn29seneZUtRYcTkNnfehFLzLfHQBxJPmbBpmDjtGyO3AUHTkEpOkbGpmnTL2g4 +liXS9zgOJYN9EnhJVTup+UClkT9q/1SorcPxbtFNGTjq6wF/uImGEkc4u/JtEcpfi T7jO8GVQmE0cajlDMIo3STjkNhtKZWEYp4UWKPOgW+eM3Vg0c2+gNWmiVYtYT/1/pG 7W0NMDNt5W2eRjtASUCM8U+KgJDWa3YbjsHg/l7qSa3ax5PnBJWl1yy0daET+79y6W sJ+BFT7DiA5Zw== From: Kalle Valo To: ath12k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2 1/8] dt-bindings: net: wireless: Describe ath12k PCI module with WSI Date: Mon, 9 Dec 2024 17:30:27 +0200 Message-Id: <20241209153034.50558-2-kvalo@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241209153034.50558-1-kvalo@kernel.org> References: <20241209153034.50558-1-kvalo@kernel.org> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Raj Kumar Bhagat The QCN9274 WiFi device supports WSI (WLAN Serial Interface). WSI is used to exchange specific control information across radios using a doorbell mechanism. This WSI connection is essential for exchanging control information among these devices. The WSI interface in the QCN9274 includes TX and RX ports, which are used to connect multiple WSI-supported devices together, forming a WSI group. Describe QCN9274 PCI wifi device with WSI interface. Signed-off-by: Raj Kumar Bhagat Signed-off-by: Kalle Valo Reviewed-by: Conor Dooley --- .../net/wireless/qcom,ath12k-wsi.yaml | 205 ++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/wireless/qcom,ath12k-wsi.yaml diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath12k-wsi.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k-wsi.yaml new file mode 100644 index 000000000000..7fec15e10a94 --- /dev/null +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath12k-wsi.yaml @@ -0,0 +1,205 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/wireless/qcom,ath12k-wsi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies ath12k wireless devices (PCIe) with WSI interface + +maintainers: + - Jeff Johnson + - Kalle Valo + +description: + Qualcomm Technologies IEEE 802.11be PCIe devices with WSI interface. + +properties: + compatible: + enum: + - pci17cb,1109 # QCN9274 + + reg: + maxItems: 1 + + qcom,ath12k-calibration-variant: + $ref: /schemas/types.yaml#/definitions/string + description: + String to uniquely identify variant of the calibration data for designs + with colliding bus and device ids + + qcom,wsi-controller: + $ref: /schemas/types.yaml#/definitions/flag + description: + The WSI controller device in the WSI group aids (is capable) to + synchronize the Timing Synchronization Function (TSF) clock across + all devices in the WSI group. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + description: | + The ath12k devices (QCN9274) feature WSI support. WSI stands for + WLAN Serial Interface. It is used for the exchange of specific + control information across radios based on the doorbell mechanism. + This WSI connection is essential to exchange control information + among these devices. + + Diagram to represent one WSI connection (one WSI group) among + three devices. + + +-------+ +-------+ +-------+ + | pcie1 | | pcie2 | | pcie3 | + | | | | | | + +----->| wsi |------->| wsi |------->| wsi |-----+ + | | grp 0 | | grp 0 | | grp 0 | | + | +-------+ +-------+ +-------+ | + +------------------------------------------------------+ + + Diagram to represent two WSI connections (two separate WSI groups) + among four devices. + + +-------+ +-------+ +-------+ +-------+ + | pcie0 | | pcie1 | | pcie2 | | pcie3 | + | | | | | | | | + +-->| wsi |--->| wsi |--+ +-->| wsi |--->| wsi |--+ + | | grp 0 | | grp 0 | | | | grp 1 | | grp 1 | | + | +-------+ +-------+ | | +-------+ +-------+ | + +---------------------------+ +---------------------------+ + + These ports are used to connect multiple WSI supported devices to + form a WSI group. + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: + This is the TX port of WSI interface. It is attached to the RX + port of the next device in the WSI connection. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: + This is the RX port of WSI interface. It is attached to the TX + port of the previous device in the WSI connection. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pcie { + #address-cells = <3>; + #size-cells = <2>; + + pcie@0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + wifi@0 { + compatible = "pci17cb,1109"; + reg = <0x0 0x0 0x0 0x0 0x0>; + + qcom,ath12k-calibration-variant = "RDP433_1"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + wifi1_wsi_tx: endpoint { + remote-endpoint = <&wifi2_wsi_rx>; + }; + }; + + port@1 { + reg = <1>; + + wifi1_wsi_rx: endpoint { + remote-endpoint = <&wifi3_wsi_tx>; + }; + }; + }; + }; + }; + + pcie@1 { + device_type = "pci"; + reg = <0x0 0x0 0x1 0x0 0x0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + wifi@0 { + compatible = "pci17cb,1109"; + reg = <0x0 0x0 0x0 0x0 0x0>; + + qcom,ath12k-calibration-variant = "RDP433_2"; + qcom,wsi-controller; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + wifi2_wsi_tx: endpoint { + remote-endpoint = <&wifi3_wsi_rx>; + }; + }; + + port@1 { + reg = <1>; + + wifi2_wsi_rx: endpoint { + remote-endpoint = <&wifi1_wsi_tx>; + }; + }; + }; + }; + }; + + pcie@2 { + device_type = "pci"; + reg = <0x0 0x0 0x2 0x0 0x0>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + + wifi@0 { + compatible = "pci17cb,1109"; + reg = <0x0 0x0 0x0 0x0 0x0>; + + qcom,ath12k-calibration-variant = "RDP433_3"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + wifi3_wsi_tx: endpoint { + remote-endpoint = <&wifi1_wsi_rx>; + }; + }; + + port@1 { + reg = <1>; + + wifi3_wsi_rx: endpoint { + remote-endpoint = <&wifi2_wsi_tx>; + }; + }; + }; + }; + }; + };