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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 5CF20FA0C2C for ; Wed, 15 Apr 2026 05:14:44 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4fwTpV6TqBz2yw7; Wed, 15 Apr 2026 15:14:26 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=211.20.114.72 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1776230066; cv=none; b=QUs0MVSBmEpM2Y816YFN+JNEoEXyxS9s3BnERdShYLSbfvng+NG3jPESaE2QGwZL+vFmH4StROXOuCRy017FayQQVIXqpjHt9hR+vTrqwNGxBMIlMl4foWFHe/MW0K2DMldrjHS4BQXXWXzIbMnDcNzGbmkfNhUpHsWNSHtGzJ4vtanujNkgwl1fVmhLSowkoZR6sz2tbWx46heOSVFJQfYzd9stqNQBFRK0fs81AhEi+F1uprh0422V+16lQpkdqx/l+49YRUR3hkii1rcmzRqrk4uUX137gWIEolW4AcGIWxufdR0EnF386Gu/G8Pl8bOI0rDpxW8yQ58bFFjUig== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1776230066; c=relaxed/relaxed; bh=L0WdrOPHBiinlmWuuOWYkjfATE33JBqjsFD6TNkEf4c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=azE0Y9AAfBD/9xh8U7tzSJ23/a7tdsj2bga+sYzO/sFPLM9Y52daQJjJ9LOUK/hQlOUui92QqToPmaiUpM6mJM8gpdv0MJX1CpRQ7W4Hw+zK9xdY5vBj/6jxNIw+J7nIFe5mfG/1MyIdDGBSW3rrFPIx93JGHDc8pIw8uxPuT0H0xqZ+tS2vPwkyeAARYrmFqrkeVVgLb7OI9HnDrVGxy8EYUOZDGiptkRwcMElfZoTZScKAlnU4nB/g7Rl/WufTRG0XMT3Dx2UqfpP9BikKqTEQ6USfKrLqni4pCExxBpvdt2ygonoeESgOHt+fc8UmZQG5tEQNMaVxLzYrBB0Cgg== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com; spf=pass (client-ip=211.20.114.72; helo=twmbx01.aspeed.com; envelope-from=ryan_chen@aspeedtech.com; receiver=lists.ozlabs.org) smtp.mailfrom=aspeedtech.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=aspeedtech.com (client-ip=211.20.114.72; helo=twmbx01.aspeed.com; envelope-from=ryan_chen@aspeedtech.com; receiver=lists.ozlabs.org) Received: from TWMBX01.aspeed.com (mail.aspeedtech.com [211.20.114.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4fwTpT57HPz2yvc; Wed, 15 Apr 2026 15:14:25 +1000 (AEST) 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; Wed, 15 Apr 2026 13:14:02 +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; Wed, 15 Apr 2026 13:14:02 +0800 From: Ryan Chen Date: Wed, 15 Apr 2026 13:14:02 +0800 Subject: [PATCH v29 1/4] dt-bindings: i2c: Split AST2600 binding into a new YAML X-Mailing-List: linux-aspeed@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260415-upstream_i2c-v29-1-317c1a905ae1@aspeedtech.com> References: <20260415-upstream_i2c-v29-0-317c1a905ae1@aspeedtech.com> In-Reply-To: <20260415-upstream_i2c-v29-0-317c1a905ae1@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=1776230042; l=3549; i=ryan_chen@aspeedtech.com; s=20251126; h=from:subject:message-id; bh=y16S4hcxAJwB0pyqLtb5Y4AIAVCk4wmOv1io+0cDITE=; b=Or/8JCfL141UZ30UNh6iq+xriTf8y+h4tS8hcSPQci5n7T0nmIcpWGS7QQztKFbVTtXlHSB+w IZ4BB8WnzjWDeaG8RTfAn5gl+Pcf1F3iSpbGTVqJs3F2LiN5pihbujn X-Developer-Key: i=ryan_chen@aspeedtech.com; a=ed25519; pk=Xe73xY6tcnkuRjjbVAB/oU30KdB3FvG4nuJuILj7ZVc= 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