From patchwork Mon May 16 06:48:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Chen X-Patchwork-Id: 12850789 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 0C196C433EF for ; Mon, 16 May 2022 13:09:33 +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:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ORjBHgc/HLEhA7KtToauE8Z7L0zWIjAVV3YHOfOCSJo=; b=hpDkl+AbCsZLr6 9EUDQkQZ7YKYIjZb6zaz7aZMVjR/2+FfwLSEFp84/Be+yIqiu3KIC2RUjz99YgAGVzud+hlwla1xO BC97OH1m9QjCq8jfzvmyAp+Q/DXpe/a1u4YAnFJdX+g/ztAVR9bDGgAuFfw9XNLdSrvy3R0OcUxtV eFaJQeflStyZXQISool6sJN4nbl4yyMWS5ABs5Lk12QRpoEc4LI6/dTJ9L82cnPZAgtd4idbraTg1 ffBEp6YydNDF9PVh6lGgsPe4n7/Bo2o0CayaQzQYUT92sXYbbzFsg6lg5/S4jmv7QNSTQSS6wBmv7 Zd5+hc/XuIgVEJ9xcV6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqaSC-007rJg-UJ; Mon, 16 May 2022 13:08:05 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqaMJ-007oP4-9l for linux-arm-kernel@bombadil.infradead.org; Mon, 16 May 2022 13:01:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=XyJOkRxcZrslBrxIUYmhhxL4HXsesVFZULzHWVjAfJ0=; b=qqNwCt6eI02/+5WyGyqxq23IJV KVA8TADHLgLw9kIsdkbo3RZa6Ln/yeRjbPsCqalTmGClr0NOz/981LH56nW+nPZusesBv+xzle4Rc jbcZMtyyNNXjVpgqpjMDf4WqUm83M70W/KUq17ZkbE4o+YWPSiADfpq/ZE2BcE46vY/EjknPMVVkp GIQ5mY/+IK+uDLyzlsmBDLgRStw68Nrz4OyrcJ2A+R9YM0E47rxr1yWP1jJZCvFDue23PdmOZtPHK ijaOwM6DZN034RKQ4M/FMDrs7FrfBz8Af9pD2RXhNceduLfFaXBZTm68B8iKZlQ7KsXZAiz2wIDzn 3hDUGg9A==; Received: from twspam01.aspeedtech.com ([211.20.114.71]) by desiato.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nqUYD-000suH-JV for linux-arm-kernel@lists.infradead.org; Mon, 16 May 2022 06:49:56 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 24G6ZVWe064016; Mon, 16 May 2022 14:35:31 +0800 (GMT-8) (envelope-from ryan_chen@aspeedtech.com) Received: from localhost.localdomain (192.168.10.9) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 16 May 2022 14:49:05 +0800 From: ryan_chen To: Joel Stanley , Andrew Jeffery , Philipp Zabel , , , , CC: Subject: [PATCH v3 2/3] dt-bindings: i2c-ast2600: Add bindings for AST2600 i2C driver Date: Mon, 16 May 2022 14:48:59 +0800 Message-ID: <20220516064900.30517-3-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220516064900.30517-1-ryan_chen@aspeedtech.com> References: <20220516064900.30517-1-ryan_chen@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.10.9] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 24G6ZVWe064016 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220516_074954_443590_39E8375B X-CRM114-Status: GOOD ( 12.51 ) 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 I2C controller, add bindings document to support driver of i2c new register mode controller Signed-off-by: ryan_chen --- .../bindings/i2c/aspeed,i2c-ast2600.ymal | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.ymal diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.ymal b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.ymal new file mode 100644 index 000000000000..7c75f5bac24f --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.ymal @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/aspeed,i2c-ast2600.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AST2600 I2C Controller on the AST26XX SoCs Device Tree Bindings + +maintainers: + - Ryan Chen + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - aspeed,ast2600-i2c + + reg: + minItems: 1 + items: + - description: address offset and range of bus + - description: address offset and range of bus buffer + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + description: + root clock of bus, should reference the APB + clock in the second cell + + resets: + maxItems: 1 + + bus-frequency: + minimum: 500 + maximum: 2000000 + default: 100000 + description: frequency of the bus clock in Hz defaults to 100 kHz when not + specified + + multi-master: + type: boolean + description: + states that there is another master active on this bus + +required: + - reg + - compatible + - clocks + - resets + +unevaluatedProperties: false + +examples: + - | + #include + #include + + i2c_gr: i2c-global-regs@0 { + compatible = "aspeed,ast2600-i2c-global", "syscon"; + reg = <0x0 0x20>; + resets = <&syscon ASPEED_RESET_I2C>; + }; + + i2c0: i2c-bus@80 { + #address-cells = <1>; + #size-cells = <0>; + #interrupt-cells = <1>; + compatible = "aspeed,ast2600-i2c-bus"; + reg = <0x80 0x80>, <0xC00 0x20>; + clocks = <&syscon ASPEED_CLK_APB2>; + resets = <&syscon ASPEED_RESET_I2C>; + bus-frequency = <100000>; + };