From patchwork Sat Oct 29 11:59:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weilong Chen X-Patchwork-Id: 620691 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 817A9FA3745 for ; Sat, 29 Oct 2022 11:52:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229756AbiJ2LwM (ORCPT ); Sat, 29 Oct 2022 07:52:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229556AbiJ2LwK (ORCPT ); Sat, 29 Oct 2022 07:52:10 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 954F76C766; Sat, 29 Oct 2022 04:52:08 -0700 (PDT) Received: from canpemm500004.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4MzyM65s8MzVj83; Sat, 29 Oct 2022 19:47:14 +0800 (CST) Received: from localhost (10.175.101.6) by canpemm500004.china.huawei.com (7.192.104.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 29 Oct 2022 19:52:06 +0800 From: Weilong Chen To: , , , , , , , , , , , , , , , CC: , , Subject: [PATCH next v9 2/4] dt-bindings: i2c: add entry for hisilicon,ascend910-i2c Date: Sat, 29 Oct 2022 19:59:37 +0800 Message-ID: <20221029115937.179788-2-chenweilong@huawei.com> X-Mailer: git-send-email 2.31.GIT In-Reply-To: <20221029115937.179788-1-chenweilong@huawei.com> References: <20221029115937.179788-1-chenweilong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To canpemm500004.china.huawei.com (7.192.104.92) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add the new compatible for HiSilicon i2c. Signed-off-by: Weilong Chen Reviewed-by: Rob Herring --- Change since v8: - Use vendor,soc-ipblock format. - Drop quotes. - Drop "Device Tree bindings". - Description goes to top level description. - Use defines for constants. Link: https://lore.kernel.org/lkml/20221024015151.342651-2-chenweilong@huawei.com/ .../bindings/i2c/hisilicon,ascend910-i2c.yaml | 73 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml new file mode 100644 index 000000000000..7d7a8de7bcd8 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/hisilicon,ascend910-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: HiSilicon common I2C controller + +maintainers: + - Yicong Yang + +description: + The HiSilicon common I2C controller can be used for many different + types of SoC such as Huawei Ascend AI series chips. + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + const: hisilicon,ascend910-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + default: 400000 + + i2c-sda-falling-time-ns: + default: 343 + + i2c-scl-falling-time-ns: + default: 203 + + i2c-sda-hold-time-ns: + default: 830 + + i2c-scl-rising-time-ns: + default: 365 + + i2c-digital-filter-width-ns: + default: 0 + +required: + - compatible + - reg + - interrupts + +unevaluatedProperties: false + +examples: + - | + #include + + i2c@38b0000 { + compatible = "hisilicon,ascend910-i2c"; + reg = <0x38b0000 0x10000>; + interrupts = ; + i2c-sda-falling-time-ns = <56>; + i2c-scl-falling-time-ns = <56>; + i2c-sda-hold-time-ns = <56>; + i2c-scl-rising-time-ns = <56>; + i2c-digital-filter; + i2c-digital-filter-width-ns = <0x0>; + clocks = <&alg_clk>; + clock-frequency = <400000>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index d1214d83c2df..d42e34d1e8e2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9228,6 +9228,7 @@ M: Yicong Yang L: linux-i2c@vger.kernel.org S: Maintained W: https://www.hisilicon.com +F: Documentation/devicetree/bindings/i2c/hisilicon,ascend910-i2c.yaml F: drivers/i2c/busses/i2c-hisi.c HISILICON LPC BUS DRIVER