From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BE402F3D60F for ; Mon, 30 Mar 2026 08:22:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:CC:To:In-Reply-To:References :Message-ID:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Gb1OEmdc6nHnegssDa+XgzmRMUmtqiRcJwYrGyz0B+I=; b=enVlLKrrxsXPpsCam+3OGl4Zo7 A+h/BOhM8vuiFn9hD0rDGnFVZa9g+zBdHRJNoHPXihop04Cz/L2t26WB8sSyfQ0uxU7VE45zseyce W+jdGSsU9gQAbkbeHc0a9oF+BlerSWsU3QOUSbGHrycclpMlbIsdkzs1vvNZ070RoZr87Ewt68VoF GwxtAGMdTduskUDcnK1eZiP+WwS1JOLBly0iMlZ038LLuDY077qOb7xKaCK9McWSVUzC4tNdKONCL h8RsPHcJhuuATjo21ec0Lvtmc0JxCnlHEMXVrrkuuuXUJo2Q/NvegF7eZ9qOKkE0KayHcKvxVFhTc TWTki69Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w77sm-0000000AqBM-3myV; Mon, 30 Mar 2026 08:22:00 +0000 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX01.aspeed.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w77sg-0000000Aq8U-3IKc for linux-arm-kernel@lists.infradead.org; Mon, 30 Mar 2026 08:21:55 +0000 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 15.2.1748.10; Mon, 30 Mar 2026 16:21:47 +0800 Received: from [127.0.1.1] (192.168.10.13) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Mon, 30 Mar 2026 16:21:47 +0800 From: Ryan Chen Date: Mon, 30 Mar 2026 16:21:47 +0800 Subject: [PATCH v28 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add global-regs and enable-dma properties MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260330-upstream_i2c-v28-2-17bdae39c5cb@aspeedtech.com> References: <20260330-upstream_i2c-v28-0-17bdae39c5cb@aspeedtech.com> In-Reply-To: <20260330-upstream_i2c-v28-0-17bdae39c5cb@aspeedtech.com> To: , , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , "Benjamin Herrenschmidt" , Rayn Chen , Philipp Zabel CC: , , , , , , Ryan Chen X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774858906; l=1878; i=ryan_chen@aspeedtech.com; s=20251126; h=from:subject:message-id; bh=Z2AXlRcw8rroVI4rnpHgF+99FZI/yNPMg8RNUT8tbwc=; b=mRu3dj7XE8wlOn99k+9o1IjAAtiPtC4krH7vcIPJvKLUcC8Mo/TQob7qLzxbb10+44H3WcEbG O1gXVUoJBpIAqYXpj+1/h707e1Uzv7zRg1QBWHqw1f7Awi/EM2OCbhU X-Developer-Key: i=ryan_chen@aspeedtech.com; a=ed25519; pk=Xe73xY6tcnkuRjjbVAB/oU30KdB3FvG4nuJuILj7ZVc= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260330_012154_827127_68A4CB96 X-CRM114-Status: UNSURE ( 8.58 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add aspeed,enable-dma boolean property to indicate that DMA is available for transfers on this I2C bus. Also add the aspeed,global-regs phandle to reference the AST2600 global registers syscon node, containing the SoC-common I2C register set. These properties apply only to the AST2600 binding. Legacy DTs remain unchanged. Signed-off-by: Ryan Chen --- Changes in v28: - update commit message correspond with aspeed,enable-dma. - remove aspeed,transfer-mode and add aspeed,enable-dma property and description. - Fix aspeed,enable-dma description to reflect hardware capability rather than software behavior Changes in v27: - change aspeed,transfer-mode to aspeed,enable-dma. --- .../devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml index de2c359037da..67b23d1a4cec 100644 --- a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml @@ -37,6 +37,16 @@ properties: resets: maxItems: 1 + aspeed,enable-dma: + type: boolean + description: Indicates this I2C controller instance has DMA capability. + + aspeed,global-regs: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle reference to the i2c global syscon node, containing the + SoC-common i2c register set. + required: - reg - compatible @@ -59,4 +69,6 @@ examples: resets = <&syscon ASPEED_RESET_I2C>; clock-frequency = <100000>; interrupts = ; + aspeed,global-regs = <&i2c_global>; + aspeed,enable-dma; }; -- 2.34.1