From patchwork Wed Feb 1 10:33:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Chen X-Patchwork-Id: 13124196 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 CCB5FC05027 for ; Wed, 1 Feb 2023 12:03:51 +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=rw6I8ZNcoG4AJWDCMkKkdS9pmGsQxMB8AqHaV3rRwbA=; b=N2WxGvsq80fYYQ LOqaVrcvFr4j37PW98imJLVCT41cy/88+APMalILOrIWerzKKe+aFmeD9T49Tsh4eBgYkduhHqoG2 KJpxmvKp5dr+jY/5qAskyLdXImEIPg8g5L0+11DOiUkuAdoK9uAscQMgr+Ak28U4QisoRkCR00FPF zdo6n7Y/AoSV4AURRGPHRRXAe4FBrgOn1rP43Xtf2D85nf10ByZdlBQbnTR5wZIKPcgfjtU60tgGx Dh+o1CPSTbCq7n42vaKzhLmo4U3mJ9SGKrDjZLkiHHslif2h46BPYEGOW4ChuXYQG9WpjEN25F1V3 igCFZFrfJfWSQnEZikAA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNBpM-00BdAN-7l; Wed, 01 Feb 2023 12:03:00 +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 1pNBoy-00Bd1p-3r for linux-arm-kernel@bombadil.infradead.org; Wed, 01 Feb 2023 12:02:36 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Content-Transfer-Encoding :MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:To:From:Sender: Reply-To:Cc:Content-ID:Content-Description; bh=bH3n2A7mz6yMoSuOecbOzZmkI1DXeAk4hjqKvlp88AQ=; b=BvAL9Sv6rsG0mrj4LftPGIAvTB Fq4ZadbdW8WbwGz1gIxcQ/HXL7gLTMhyvvOBRnm1Tm7Ull/nSDiejlg0ia3+vTr2d+ZLmDWCubHnU y09jGRceuQN1UZZy9EzaHbnSDg0CWKJVCJiROkiE+iQZatsVgysScmkmNY51j/r4PMP7flcTqMQTp 2jsrLKLZkx3flu5i3d8UN828SB1KFHTnfxoda148ua79qT4WfwQKXZBp8F5XZYLbwqAnQZkHXoif3 z+QZgKOkv1exwndyTt1uE8c/fCuIQovoW484DZFlappAZYg4ZtLkF00lTMKUvwAgv/Fdc2bQt+GVp sZgsPDYQ==; Received: from twspam01.aspeedtech.com ([211.20.114.71]) by desiato.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pNARe-004jNL-18 for linux-arm-kernel@lists.infradead.org; Wed, 01 Feb 2023 10:34:29 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 311AMJ1C097435; Wed, 1 Feb 2023 18:22:20 +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; Wed, 1 Feb 2023 18:34:04 +0800 From: Ryan Chen To: Ryan Chen , Rob Herring , Krzysztof Kozlowski , Joel Stanley , Andrew Jeffery , Philipp Zabel , , , , Subject: [PATCH v4 2/3] dt-bindings: i2c-ast2600: Add support for AST2600 i2C driver Date: Wed, 1 Feb 2023 18:33:58 +0800 Message-ID: <20230201103359.1742140-3-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230201103359.1742140-1-ryan_chen@aspeedtech.com> References: <20230201103359.1742140-1-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 311AMJ1C097435 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230201_103427_366906_19BD2A2D X-CRM114-Status: GOOD ( 13.71 ) 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.yaml | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.yaml diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.yaml new file mode 100644 index 000000000000..b7d7bc303e77 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c-ast2600.yaml @@ -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"; + reg = <0x80 0x80>, <0xC00 0x20>; + clocks = <&syscon ASPEED_CLK_APB2>; + resets = <&syscon ASPEED_RESET_I2C>; + bus-frequency = <100000>; + };