From patchwork Mon Feb 20 06:17:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Chen X-Patchwork-Id: 13146089 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 71700C05027 for ; Mon, 20 Feb 2023 06:24:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2dPnopgUBCSeSjP5dxQUFswSLyKcYGtx2EjGU+KvOTw=; b=GddPz00WYFJEXE Jea1QBmJcQSy01QvdQjzQrphOCWxLJkWOAUn4rEoV8U2Wq95duN4telnVKTMFaJbxtayXDEB1Bj/t NCxYvOqeHK2CY6CyttM/b6z2fl1n3s/U6fFt7NKnKvVr4vji4envnXTFbPveBbnO1gIs6PjP+VZYX i3mte//l6Z/ias8knMPwtGV3jdc/UvIeJQiKI24iTQIPnehrtD9iGohk5a6C/hQraTIc8d1g9zwgy D4P0uGTKsMUut4jKFIJCqSwxVdMp+ScejzZOP86CkkofrGq2gmiS6/VYk9A4pYCxNKfP68KaGnvHZ zyiZrkwouCbBIT2ZWGuA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pTzaA-0038Xs-2R; Mon, 20 Feb 2023 06:23:26 +0000 Received: from twspam01.aspeedtech.com ([211.20.114.71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pTza5-0038Wg-LD for linux-arm-kernel@lists.infradead.org; Mon, 20 Feb 2023 06:23:23 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 31K64wMU022737; Mon, 20 Feb 2023 14:04:58 +0800 (GMT-8) (envelope-from ryan_chen@aspeedtech.com) Received: from aspeedtech.com (192.168.10.13) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 20 Feb 2023 14:17:51 +0800 From: Ryan Chen To: Ryan Chen , Rob Herring , Krzysztof Kozlowski , Joel Stanley , Andrew Jeffery , Philipp Zabel , , , , Subject: [PATCH v5 1/2] dt-bindings: i2c: Add support for ASPEED i2Cv2 Date: Mon, 20 Feb 2023 14:17:44 +0800 Message-ID: <20230220061745.1973981-2-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230220061745.1973981-1-ryan_chen@aspeedtech.com> References: <20230220061745.1973981-1-ryan_chen@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.10.13] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 31K64wMU022737 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230219_222322_316237_4B451470 X-CRM114-Status: GOOD ( 12.77 ) 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 AST2600 support new register set for I2Cv2 controller, add bindings document to support driver of i2cv2 new register mode controller. Signed-off-by: Ryan Chen --- .../devicetree/bindings/i2c/aspeed,i2cv2.yaml | 83 +++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/aspeed,i2cv2.yaml diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2cv2.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2cv2.yaml new file mode 100644 index 000000000000..913fb45d5fbe --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2cv2.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/aspeed,i2cv2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED I2Cv2 Controller on the AST26XX SoCs + +maintainers: + - Ryan Chen + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - aspeed,ast2600-i2cv2 + + reg: + minItems: 1 + items: + - description: address offset and range of register + - description: address offset and range of buffer register + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + description: + Reference clock for the I2C bus + + resets: + maxItems: 1 + + clock-frequency: + description: + Desired I2C bus clock frequency in Hz. default 100khz. + + multi-master: + type: boolean + description: + states that there is another master active on this bus + + timeout: + type: boolean + description: Enable i2c bus timeout for master/slave (35ms) + + byte-mode: + type: boolean + description: Force i2c driver use byte mode transmit + + buff-mode: + type: boolean + description: Force i2c driver use buffer mode transmit + + aspeed,gr: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle of i2c global register node. + +required: + - compatible + - reg + - interrupts + - clocks + - resets + - aspeed,gr + +unevaluatedProperties: false + +examples: + - | + #include + #include + i2c: i2c-bus@80 { + compatible = "aspeed,ast2600-i2cv2"; + reg = <0x80 0x80>, <0xc00 0x20>; + interrupts = ; + aspeed,gr = <&i2c_gr>; + clocks = <&syscon ASPEED_CLK_APB2>; + resets = <&syscon ASPEED_RESET_I2C>; + };