From patchwork Tue Jun 16 03:50:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11606365 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4BEF3912 for ; Tue, 16 Jun 2020 04:02:58 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 19CD12074D for ; Tue, 16 Jun 2020 04:02:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PdyMo2Ds" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 19CD12074D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=GkOTajHXbkaYdFBfFWqOPM7sPB1iNMSaZj06nlZmRUw=; b=PdyMo2Ds1NuABuRQ8AtJW3IZwJ JSdkJEBRpeYw0vo4sy93+wlbW8hNA3QxNPW3i7h2MoD/52SGEQbBM3biQiosBkEmgqZz6lMur1ZVL Rqx2DyzvfupoxM6trXTxvqvXO+MNkT41/3rKOF1SMSeMTY2fte5Epm6PlZxwV5skeP/z0fTtvat/b wxhy347C+knM2VTbDL2dP8gNTScNEo0qp0BXW5aegdjS2wzcOJVjPeBKF9mYXFPBqkb8CjFtnLwt7 GqMBtRrGnRMc4FN1Rc2HdkrBVzar2LWype0NWcbDQIS/Plfh85snB2Piqam677XSEsL179hWhCSWv cSBa5AcA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jl2oG-0002ie-CB; Tue, 16 Jun 2020 04:02:52 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jl2nS-0001ys-Qv for linux-arm-kernel@lists.infradead.org; Tue, 16 Jun 2020 04:02:05 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 04E831A0579; Tue, 16 Jun 2020 06:02:01 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id D43861A053F; Tue, 16 Jun 2020 06:01:55 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 8A072402E8; Tue, 16 Jun 2020 12:01:49 +0800 (SGT) From: Anson Huang To: linux@rempel-privat.de, kernel@pengutronix.de, robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com, wolfram@the-dreams.de, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V3 2/2] dt-bindings: i2c: Convert imx i2c to json-schema Date: Tue, 16 Jun 2020 11:50:54 +0800 Message-Id: <1592279454-32551-2-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592279454-32551-1-git-send-email-Anson.Huang@nxp.com> References: <1592279454-32551-1-git-send-email-Anson.Huang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200615_210203_170191_512C315A X-CRM114-Status: GOOD ( 14.31 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Convert the i.MX I2C binding to DT schema format using json-schema, some improvements applied, such as update example based on latest DT file, add more compatible for existing SoCs, and remove unnecessary common property "pinctrl". Signed-off-by: Anson Huang --- Changes since V2: - remove 'clock-frequency' property's type and use enum for it, ONLY support 100KHz/400KHz. - remove *-gpios's typs/description, since it is already defined in i2c-gpio.yaml. - fix space issue in example. --- Documentation/devicetree/bindings/i2c/i2c-imx.txt | 49 ---------- Documentation/devicetree/bindings/i2c/i2c-imx.yaml | 103 +++++++++++++++++++++ 2 files changed, 103 insertions(+), 49 deletions(-) delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-imx.txt create mode 100644 Documentation/devicetree/bindings/i2c/i2c-imx.yaml diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx.txt b/Documentation/devicetree/bindings/i2c/i2c-imx.txt deleted file mode 100644 index b967544..0000000 --- a/Documentation/devicetree/bindings/i2c/i2c-imx.txt +++ /dev/null @@ -1,49 +0,0 @@ -* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX - -Required properties: -- compatible : - - "fsl,imx1-i2c" for I2C compatible with the one integrated on i.MX1 SoC - - "fsl,imx21-i2c" for I2C compatible with the one integrated on i.MX21 SoC - - "fsl,vf610-i2c" for I2C compatible with the one integrated on Vybrid vf610 SoC -- reg : Should contain I2C/HS-I2C registers location and length -- interrupts : Should contain I2C/HS-I2C interrupt -- clocks : Should contain the I2C/HS-I2C clock specifier - -Optional properties: -- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz. - The absence of the property indicates the default frequency 100 kHz. -- dmas: A list of two dma specifiers, one for each entry in dma-names. -- dma-names: should contain "tx" and "rx". -- scl-gpios: specify the gpio related to SCL pin -- sda-gpios: specify the gpio related to SDA pin -- pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c - bus recovery, call it "gpio" state - -Examples: - -i2c@83fc4000 { /* I2C2 on i.MX51 */ - compatible = "fsl,imx51-i2c", "fsl,imx21-i2c"; - reg = <0x83fc4000 0x4000>; - interrupts = <63>; -}; - -i2c@70038000 { /* HS-I2C on i.MX51 */ - compatible = "fsl,imx51-i2c", "fsl,imx21-i2c"; - reg = <0x70038000 0x4000>; - interrupts = <64>; - clock-frequency = <400000>; -}; - -i2c0: i2c@40066000 { /* i2c0 on vf610 */ - compatible = "fsl,vf610-i2c"; - reg = <0x40066000 0x1000>; - interrupts =<0 71 0x04>; - dmas = <&edma0 0 50>, - <&edma0 0 51>; - dma-names = "rx","tx"; - pinctrl-names = "default", "gpio"; - pinctrl-0 = <&pinctrl_i2c1>; - pinctrl-1 = <&pinctrl_i2c1_gpio>; - scl-gpios = <&gpio5 26 GPIO_ACTIVE_HIGH>; - sda-gpios = <&gpio5 27 GPIO_ACTIVE_HIGH>; -}; diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx.yaml b/Documentation/devicetree/bindings/i2c/i2c-imx.yaml new file mode 100644 index 0000000..869f2ae --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-imx.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-imx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX + +maintainers: + - Wolfram Sang + +properties: + compatible: + oneOf: + - const: fsl,imx1-i2c + - const: fsl,imx21-i2c + - const: fsl,vf610-i2c + - items: + - const: fsl,imx35-i2c + - const: fsl,imx1-i2c + - items: + - enum: + - fsl,imx25-i2c + - fsl,imx27-i2c + - fsl,imx31-i2c + - fsl,imx50-i2c + - fsl,imx51-i2c + - fsl,imx53-i2c + - fsl,imx6q-i2c + - fsl,imx6sl-i2c + - fsl,imx6sx-i2c + - fsl,imx6sll-i2c + - fsl,imx6ul-i2c + - fsl,imx7s-i2c + - fsl,imx8mq-i2c + - fsl,imx8mm-i2c + - fsl,imx8mn-i2c + - fsl,imx8mp-i2c + - const: fsl,imx21-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + const: ipg + + clock-frequency: + enum: [ 100000, 400000 ] + + dmas: + items: + - description: DMA controller phandle and request line for RX + - description: DMA controller phandle and request line for TX + + dma-names: + items: + - const: rx + - const: tx + + sda-gpios: + maxItems: 1 + + scl-gpios: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + #include + #include + #include + #include + + i2c@83fc4000 { + compatible = "fsl,imx51-i2c", "fsl,imx21-i2c"; + reg = <0x83fc4000 0x4000>; + interrupts = <63>; + clocks = <&clks IMX5_CLK_I2C2_GATE>; + }; + + i2c@40066000 { + compatible = "fsl,vf610-i2c"; + reg = <0x40066000 0x1000>; + interrupts = <71 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clks VF610_CLK_I2C0>; + clock-names = "ipg"; + dmas = <&edma0 0 50>, + <&edma0 0 51>; + dma-names = "rx", "tx"; + };