From patchwork Fri Feb 10 10:12:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alain Volmat X-Patchwork-Id: 652583 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 F10B0C05027 for ; Fri, 10 Feb 2023 10:19:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231959AbjBJKTF (ORCPT ); Fri, 10 Feb 2023 05:19:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231927AbjBJKTE (ORCPT ); Fri, 10 Feb 2023 05:19:04 -0500 X-Greylist: delayed 359 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 10 Feb 2023 02:19:03 PST Received: from mr85p00im-zteg06011501.me.com (mr85p00im-zteg06011501.me.com [17.58.23.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39FCA6D8E6 for ; Fri, 10 Feb 2023 02:19:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=me.com; s=1a1hai; t=1676023984; bh=KFtwu33ECMShGMR+8RbNg0g2/vZHZBsmYaAmWtSkATg=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=UaBFz76cdjjYzbcOrW8W49cxaGIe0fSmkAAyfh8p/y+X+P3NA8r1RlLcDiXsf2o44 5Q872UKMzBwr3LEFbo3V1kb3tH6z19BMrFCd6+lmYp93GqdTsncn+wIliQ6pg1yTY+ Qq0CxRUq8uXekZk3Vz98QFjPBsjW4/0buQ9iClx7CNIVJmy3PDYUgrT8H8XNML9LuG g5sG4EEoANSWnd5/Dc6ZQyc1d1ImdVoQs7xKNBVILIxvKnwrmV3ZSFfhtGXvKSTfDc vIMMT8dyIpda2mpWLRPkOY+xO6xYUd9aARj5yLYjreoTBfurcBk/0F9kRgl0dklC2W EmbRRqXq+qUoA== Received: from localhost (mr38p00im-dlb-asmtp-mailmevip.me.com [17.57.152.18]) by mr85p00im-zteg06011501.me.com (Postfix) with ESMTPSA id 3F1B4480B4B; Fri, 10 Feb 2023 10:13:04 +0000 (UTC) From: Alain Volmat To: Rob Herring , Krzysztof Kozlowski , Patrice Chotard Cc: Alain Volmat , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] dt-bindings: i2c: conversion of i2c-st into DT schema YAML Date: Fri, 10 Feb 2023 11:12:16 +0100 Message-Id: <20230210101218.14529-1-avolmat@me.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org File st,i2c.yaml replaces i2c-st.txt for the i2c-st driver. Signed-off-by: Alain Volmat --- .../devicetree/bindings/i2c/i2c-st.txt | 41 ----------- .../devicetree/bindings/i2c/st,sti-i2c.yaml | 72 +++++++++++++++++++ MAINTAINERS | 2 +- 3 files changed, 73 insertions(+), 42 deletions(-) delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-st.txt create mode 100644 Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml diff --git a/Documentation/devicetree/bindings/i2c/i2c-st.txt b/Documentation/devicetree/bindings/i2c/i2c-st.txt deleted file mode 100644 index 4c26fda3844a..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-st.txt +++ /dev/null @@ -1,41 +0,0 @@ -ST SSC binding, for I2C mode operation - -Required properties : -- compatible : Must be "st,comms-ssc-i2c" or "st,comms-ssc4-i2c" -- reg : Offset and length of the register set for the device -- interrupts : the interrupt specifier -- clock-names: Must contain "ssc". -- clocks: Must contain an entry for each name in clock-names. See the common - clock bindings. -- A pinctrl state named "default" must be defined to set pins in mode of - operation for I2C transfer. - -Optional properties : -- clock-frequency : Desired I2C bus clock frequency in Hz. If not specified, - the default 100 kHz frequency will be used. As only Normal and Fast modes - are supported, possible values are 100000 and 400000. -- st,i2c-min-scl-pulse-width-us : The minimum valid SCL pulse width that is - allowed through the deglitch circuit. In units of us. -- st,i2c-min-sda-pulse-width-us : The minimum valid SDA pulse width that is - allowed through the deglitch circuit. In units of us. -- A pinctrl state named "idle" could be defined to set pins in idle state - when I2C instance is not performing a transfer. -- A pinctrl state named "sleep" could be defined to set pins in sleep state - when driver enters in suspend. - - - -Example : - -i2c0: i2c@fed40000 { - compatible = "st,comms-ssc4-i2c"; - reg = <0xfed40000 0x110>; - interrupts = ; - clocks = <&clk_s_a0_ls CLK_ICN_REG>; - clock-names = "ssc"; - clock-frequency = <400000>; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_i2c0_default>; - st,i2c-min-scl-pulse-width-us = <0>; - st,i2c-min-sda-pulse-width-us = <5>; -}; diff --git a/Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml new file mode 100644 index 000000000000..dd6ff18b9ed7 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/st,sti-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: I2C controller embedded in STMicroelectronics STi platform + +maintainers: + - Patrice Chotard + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - st,comms-ssc-i2c + - st,comms-ssc4-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + maxItems: 1 + + clock-frequency: + enum: [ 100000, 400000 ] + + st,i2c-min-scl-pulse-width-us: + description: + The minimum valid SCL pulse width that is allowed through the + deglitch circuit. In units of us. + maxItems: 1 + + st,i2c-min-sda-pulse-width-us: + description: + The minimum valid SDA pulse width that is allowed through the + deglitch circuit. In units of us. + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include + #include + i2c@fed40000 { + compatible = "st,comms-ssc4-i2c"; + reg = <0xfed40000 0x110>; + interrupts = ; + clocks = <&clk_s_a0_ls CLK_ICN_REG>; + clock-names = "ssc"; + clock-frequency = <400000>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_i2c0_default>; + st,i2c-min-scl-pulse-width-us = <0>; + st,i2c-min-sda-pulse-width-us = <5>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 06d5be2c713c..2e32eb8d44f5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2925,7 +2925,7 @@ M: Patrice Chotard L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) S: Maintained W: http://www.stlinux.com -F: Documentation/devicetree/bindings/i2c/i2c-st.txt +F: Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml F: arch/arm/boot/dts/sti* F: arch/arm/mach-sti/ F: drivers/ata/ahci_st.c