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 ACC71F3D61A 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=L0WdrOPHBiinlmWuuOWYkjfATE33JBqjsFD6TNkEf4c=; b=Q6oSAI6Jd+EgEIZPnlocshYQHU LGiazMwyfKd2Z8yvlO9yqfJPTcESpZu9kQZxfhCWjbbuiWFHx/ovAkKc7+dH4Fja+dxMsppiElPsf CiuMPlnQsv0WoT9bqi4dkDQ+CZesCj1OUZ76Z2GYtR3hjqs5tH8wP1p4nJTgzOZZNuPybWZCtypLG V0kaALuKy7MP5oOfq0Op/BVlZEXMX+SX8H3gI0u9Dsw+f2T2jseJ8+/RO5YiAf6RsQs23kZP0jHL+ If0fZTgbxD9B1srGBvL7m7ghxkshVpbi3R10LEMtBTfcLPSYcZH3vK3+nK7SzmR2euA0tZQJglPvl VKsSzB6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w77sm-0000000AqB0-2YPV; 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 1w77sf-0000000Aq8U-0PKd for linux-arm-kernel@lists.infradead.org; Mon, 30 Mar 2026 08:21:54 +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 16:21:46 +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 16:21:46 +0800 From: Ryan Chen Date: Mon, 30 Mar 2026 16:21:46 +0800 Subject: [PATCH v28 1/4] dt-bindings: i2c: Split AST2600 binding into a new YAML MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260330-upstream_i2c-v28-1-17bdae39c5cb@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=3549; i=ryan_chen@aspeedtech.com; s=20251126; h=from:subject:message-id; bh=y16S4hcxAJwB0pyqLtb5Y4AIAVCk4wmOv1io+0cDITE=; b=xdzWguXSMv7+wIqZ9sDcrMRQF/QqZGUPMTqN7T04Ova6V5kJEgflklf7lM2evpRivPdwlpfZ3 pJy8xFog63XAD3eWnOiW/wCeo4jnvSdemxVRPuibeiLHJ77E99OCskS 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_012153_143348_A1E140E9 X-CRM114-Status: GOOD ( 14.92 ) 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 The AST2600 I2C controller introduces a completely new register layout with separate controller and target register blocks, unlike the mixed register layout used by AST2400/AST2500. Move AST2600 I2C binding from aspeed,i2c.yaml to a dedicated aspeed,ast2600-i2c.yaml schema. Besides the split, this also adjusts for AST2600-specific requirements. - require two reg regions (controller register block + buffer block) - use clock-frequency for bus speed description - interrupts are required on AST2600 - use correct DTS coding style in example No compatible strings are changed. Signed-off-by: Ryan Chen --- Changes in v26: - commit message: include details of changes from original binding - fix example property ordering to follow DTS coding style - use consistent "AST2600" naming --- .../bindings/i2c/aspeed,ast2600-i2c.yaml | 62 ++++++++++++++++++++++ .../devicetree/bindings/i2c/aspeed,i2c.yaml | 3 +- 2 files changed, 63 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml new file mode 100644 index 000000000000..de2c359037da --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/aspeed,ast2600-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASPEED I2C on the AST2600 SoCs + +maintainers: + - Ryan Chen + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - aspeed,ast2600-i2c-bus + + reg: + items: + - description: controller registers + - description: controller buffer space + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + description: Desired operating frequency of the I2C bus in Hz. + minimum: 500 + maximum: 4000000 + default: 100000 + + resets: + maxItems: 1 + +required: + - reg + - compatible + - clocks + - resets + - interrupts + +unevaluatedProperties: false + +examples: + - | + #include + #include + i2c@80 { + compatible = "aspeed,ast2600-i2c-bus"; + reg = <0x80 0x80>, <0xc00 0x20>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon ASPEED_CLK_APB>; + resets = <&syscon ASPEED_RESET_I2C>; + clock-frequency = <100000>; + interrupts = ; + }; diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml index 5b9bd2feda3b..d4e4f412feba 100644 --- a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/i2c/aspeed,i2c.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs +title: ASPEED I2C on the AST24XX, AST25XX SoCs maintainers: - Rayn Chen @@ -17,7 +17,6 @@ properties: enum: - aspeed,ast2400-i2c-bus - aspeed,ast2500-i2c-bus - - aspeed,ast2600-i2c-bus reg: minItems: 1 -- 2.34.1