From patchwork Wed Apr 13 10:17:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Chen X-Patchwork-Id: 12811851 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8E49C433F5 for ; Wed, 13 Apr 2022 10:18:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234006AbiDMKUn (ORCPT ); Wed, 13 Apr 2022 06:20:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229682AbiDMKUk (ORCPT ); Wed, 13 Apr 2022 06:20:40 -0400 Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1268F57150; Wed, 13 Apr 2022 03:18:18 -0700 (PDT) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 23DA5u8O006812; Wed, 13 Apr 2022 18:05:57 +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; Wed, 13 Apr 2022 18:17:41 +0800 From: ryan_chen To: ryan_chen , Michael Turquette , Stephen Boyd , Joel Stanley , Andrew Jeffery , , CC: Subject: [PATCH v2 2/3] dt-bindings: i2c-ast2600: Add bindings for AST2600 i2C driver Date: Wed, 13 Apr 2022 18:17:34 +0800 Message-ID: <20220413101735.27678-3-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220413101735.27678-1-ryan_chen@aspeedtech.com> References: <20220413101735.27678-1-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 23DA5u8O006812 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.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>; + };