From patchwork Mon Oct 7 03:52:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Chen X-Patchwork-Id: 1993362 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XMQH35BJHz1xtV for ; Mon, 7 Oct 2024 14:53:19 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4XMQGp36yjz3cSN for ; Mon, 7 Oct 2024 14:53:06 +1100 (AEDT) X-Original-To: linux-aspeed@lists.ozlabs.org Delivered-To: linux-aspeed@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=211.20.114.72 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728273179; cv=none; b=gk12YtUA0x5qiep4C2YQSPADrZu2Y/AeeFvLXRr2z/E1qTl3OvSb6V2Zrt5voAc2G2SyE25mpRdknhW6HNGa/ugzCdnZ48ZGs7chxep/JQbilujWDtD7/SY9L2+38uy8eIqiGTo4tht1P06QP6dLDCOn3FLissAR8XMrKC6CX+Recqm+ZfET/QgBYB9nK++r0uk9jTWzKCR5bu1s2q2r1V+PNXO5HDreVm4fbZQbKIhIMDbq4OaFm5FC7kUys572X2AD/H3UnJpZVWOk22SHF66Fp3LR8xNWBFqvGi0skv4wQlef7ZCp7Wrq0bMsEbQVd0Wzs2ygCo7Ut6ldzsT/hQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728273179; c=relaxed/relaxed; bh=WWv8VCtTga5WeRcDT8Zh54/sQxWWpGTOPOQV5hgeo/Q=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XPRp0/BrzdBRE8oKPN6wQXKSUF2JqVG3UO08cvIpda9Df8ATemaQRw76mL2ToIF2G1OCtr7KBtJTxAesnxtSb0q9W+o8draPqVRI2bFOG/a13/mu5IICgqQc6Cf3yT4du0LOlSzHk+LQcN6Vi10QlNgsq1qWumwy8A4SHceR52ViOvuQgs/f2VQIGGpnfqltLahHF6qkkCIZw5zJOwaajWvujcO0antnCx5PGuczTEk/mtM6aHtqK9YsN9gOTTlgfVuY+3TznxlD6LjzBDDzn4oBaQUAu5yFN3DJFiA4aRxNl+zvhYV1LsvKNePXxb5u01XEcRMncX2PDUG6bx6QYQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com; spf=pass (client-ip=211.20.114.72; helo=twmbx01.aspeed.com; envelope-from=ryan_chen@aspeedtech.com; receiver=lists.ozlabs.org) smtp.mailfrom=aspeedtech.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=aspeedtech.com (client-ip=211.20.114.72; helo=twmbx01.aspeed.com; envelope-from=ryan_chen@aspeedtech.com; receiver=lists.ozlabs.org) Received: from TWMBX01.aspeed.com (mail.aspeedtech.com [211.20.114.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4XMQGf4CVZz2xWt; Mon, 7 Oct 2024 14:52:58 +1100 (AEDT) Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.12; Mon, 7 Oct 2024 11:52:35 +0800 Received: from twmbx02.aspeed.com (192.168.10.152) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Mon, 7 Oct 2024 11:52:35 +0800 From: Ryan Chen To: , , , , , , , , , , , , , , , , Subject: [PATCH v15 1/3] dt-bindings: i2c: aspeed: support for AST2600-i2cv2 Date: Mon, 7 Oct 2024 11:52:33 +0800 Message-ID: <20241007035235.2254138-2-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241007035235.2254138-1-ryan_chen@aspeedtech.com> References: <20241007035235.2254138-1-ryan_chen@aspeedtech.com> MIME-Version: 1.0 X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_FAIL,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on lists.ozlabs.org X-BeenThere: linux-aspeed@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux ASPEED SoC development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Krzysztof Kozlowski Errors-To: linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linux-aspeed" Add ast2600-i2cv2 compatible and aspeed,global-regs, aspeed,enable-dma and description for ast2600-i2cv2. Signed-off-by: Ryan Chen Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/i2c/aspeed,i2c.yaml | 51 +++++++++++++++++-- 1 file changed, 48 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml index 6df27b47b922..6c16fc76c978 100644 --- a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml @@ -9,9 +9,6 @@ title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs maintainers: - Rayn Chen -allOf: - - $ref: /schemas/i2c/i2c-controller.yaml# - properties: compatible: enum: @@ -49,12 +46,50 @@ properties: description: states that there is another master active on this bus + aspeed,enable-dma: + type: boolean + description: | + I2C bus enable dma mode transfer. + + ASPEED ast2600 platform equipped with 16 I2C controllers that share a + single DMA engine. DTS files can specify the data transfer mode to/from + the device, either DMA or programmed I/O. However, hardware limitations + may require a DTS to manually allocate which controller can use DMA mode. + The "aspeed,enable-dma" property allows control of this. + + In cases where one the hardware design results in a specific + controller handling a larger amount of data, a DTS would likely + enable DMA mode for that one controller. + + aspeed,global-regs: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle of i2c global register node. + required: - reg - compatible - clocks - resets +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + - if: + properties: + compatible: + contains: + const: aspeed,ast2600-i2cv2 + + then: + properties: + reg: + minItems: 2 + required: + - aspeed,global-regs + else: + properties: + aspeed,global-regs: false + aspeed,enable-dma: false + unevaluatedProperties: false examples: @@ -71,3 +106,13 @@ examples: interrupts = <0>; interrupt-parent = <&i2c_ic>; }; + - | + #include + i2c1: i2c@80 { + compatible = "aspeed,ast2600-i2cv2"; + reg = <0x80 0x80>, <0xc00 0x20>; + aspeed,global-regs = <&i2c_global>; + clocks = <&syscon ASPEED_CLK_APB>; + resets = <&syscon ASPEED_RESET_I2C>; + interrupts = ; + };