From patchwork Thu Dec 10 14:03:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 342190 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D4B7C4167B for ; Thu, 10 Dec 2020 14:06:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 433BE23B85 for ; Thu, 10 Dec 2020 14:06:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389991AbgLJOGt (ORCPT ); Thu, 10 Dec 2020 09:06:49 -0500 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:5149 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733064AbgLJOGg (ORCPT ); Thu, 10 Dec 2020 09:06:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1607609195; x=1639145195; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JaZDfj3HCaC7CI61ySYE6mZNZ1qz3fve+oOLHQcNsw0=; b=QL3mpDhXNpPg9iAQrozXIThIyRpNadGAvEm0bFmipFmC7zZFiBOh1h4q RLVnljGJP659JWVJjhsT0O+sHQ8Q1z180mz1XphQHxf1pKQ/2LjoFiYwg ziYio3Uzyk75kMNyzFy4klN+Kl5g/CBRTjQ0OlBfhgLHyNVyOjmGMgsa8 sd3XwA7FmYU0uJYwFA7uko9eK+1VrIrVhTW6SUvzfNFjyxJ/fCNb0ne7h e52KMpVQeZjDKB4z80u6tFa+2r5sV3G4bSH1JDCT64xigfD4PFeJOkLnG aTlaerfZftcZhE2V77Lq0UpgyzIlZ7R80n862pkVrISPuGmLqQQZGEgSs w==; IronPort-SDR: eMeLK9mbjHRtuu/WVlwK/lyl9ZZw/th7qOtdyMjXjLrWyiesbccdgmECvCHJAUX4GPGDAcy+Zz jEz7rv4p7TsXQxBiM/xo4AppgvVl7++41Dlnj9XQmjMGEE7A8lmIyEsnQ38iK/3knakviao0+M sWjhCvppAQhvxXSwYtXFeEVOFtUQQhTZfpGqrzkxGdEmy/nktNGms6cZ3OKL8yJnhoXIdpWILp 1QKikloIigW5qegqJsZ50bcf2rJu42EOk7+Ry8zFEe/CxMTYsO55RRHp8Do1hKpwGa0exmzqIv qOI= X-IronPort-AV: E=Sophos;i="5.78,408,1599494400"; d="scan'208";a="159316733" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Dec 2020 22:03:40 +0800 IronPort-SDR: fZo0o7mN0u38XUwCLB9MpHd0B4u0Vpq/GkNKBeFEldk8uXGol25FfXDtTZGcxGfyFnJk9D4zJu JcTyPNUeoW4OeQ4N2hfA0vHDU/d54uhJw= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Dec 2020 05:47:32 -0800 IronPort-SDR: C9/Dk8aXTbFHPVJp4g7fc2RCwVXw7mfRzGwp875gC+vCSb4gsWFvW0T6L50XFm0hp0MZCKQfn5 qI9vGZLgF2Sg== WDCIronportException: Internal Received: from wdapacbjl0003.my.asia.wdc.com (HELO twashi.fujisawa.hgst.com) ([10.84.71.173]) by uls-op-cesaip02.wdc.com with ESMTP; 10 Dec 2020 06:03:40 -0800 From: Damien Le Moal To: Palmer Dabbelt , linux-riscv@lists.infradead.org, Rob Herring , devicetree@vger.kernel.org, Stephen Boyd , linux-clk@vger.kernel.org, Linus Walleij , linux-gpio@vger.kernel.org, Philipp Zabel Cc: Sean Anderson Subject: [PATCH v8 11/22] dt-binding: mfd: Document canaan, k210-sysctl bindings Date: Thu, 10 Dec 2020 23:03:02 +0900 Message-Id: <20201210140313.258739-12-damien.lemoal@wdc.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201210140313.258739-1-damien.lemoal@wdc.com> References: <20201210140313.258739-1-damien.lemoal@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Document the device tree bindings of the Canaan Kendryte K210 SoC system controller driver in Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml. Signed-off-by: Damien Le Moal --- .../bindings/mfd/canaan,k210-sysctl.yaml | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml diff --git a/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml b/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml new file mode 100644 index 000000000000..a61d8ea4fbec --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/canaan,k210-sysctl.yaml @@ -0,0 +1,116 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/canaan,k210-sysctl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Canaan Kendryte K210 System Controller Device Tree Bindings + +maintainers: + - Damien Le Moal + +description: + Canaan Inc. Kendryte K210 SoC system controller which provides a + register map for controlling the clocks, reset signals and pin power + domains of the SoC. + +properties: + compatible: + allOf: + - items: + - const: canaan,k210-sysctl + - const: syscon + - const: simple-mfd + + clocks: + description: + System controller Advanced Power Bus (APB) interface clock source. + + clock-names: + maxItems: 1 + items: + - const: pclk + + reg: + maxItems: 1 + description: + Offset and length of the system controller register space. + + reg-io-width: + const: 4 + + clock-controller: + # Child node + type: object + $ref: "../clock/canaan,k210-clk.yaml" + description: + Clock controller for the SoC clocks. This child node definition + should follow the bindings specified in + Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml. + + reset-controller: + # Child node + type: object + $ref: "../reset/canaan,k210-rst.yaml" + description: + Reset controller for the SoC. This child node definition + should follow the bindings specified in + Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml. + + syscon-reboot: + # Child node + type: object + $ref: "../power/reset/syscon-reboot.yaml" + description: + Reboot method for the SoC. This child node definition + should follow the bindings specified in + Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml. + +required: + - compatible + - clocks + - reg + - clock-controller + +additionalProperties: false + +examples: + - | + #include + #include + + clocks { + in0: oscllator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <26000000>; + }; + }; + + sysctl: syscon@50440000 { + compatible = "canaan,k210-sysctl", + "syscon", "simple-mfd"; + reg = <0x50440000 0x100>; + reg-io-width = <4>; + clocks = <&sysclk K210_CLK_APB1>; + clock-names = "pclk"; + + sysclk: clock-controller { + #clock-cells = <1>; + compatible = "canaan,k210-clk"; + clocks = <&in0>; + }; + + sysrst: reset-controller { + compatible = "canaan,k210-rst"; + #reset-cells = <1>; + }; + + reboot: syscon-reboot { + compatible = "syscon-reboot"; + regmap = <&sysctl>; + offset = <48>; + mask = <1>; + value = <1>; + }; + };