From patchwork Tue Dec 8 07:33:44 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: 340611 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 29FA3C2BB40 for ; Tue, 8 Dec 2020 07:37:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F11CF23A6A for ; Tue, 8 Dec 2020 07:37:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727524AbgLHHg4 (ORCPT ); Tue, 8 Dec 2020 02:36:56 -0500 Received: from esa6.hgst.iphmx.com ([216.71.154.45]:58688 "EHLO esa6.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726299AbgLHHg4 (ORCPT ); Tue, 8 Dec 2020 02:36:56 -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=1607413016; x=1638949016; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=irTVIQIcf04Qv4d6ntB8ZOD8tnnSkj9g+ksFRT5I7iY=; b=AcDxECVlzWQ3KB8F6qDgX+f6hmDoTzF1qAeTOVxpVBqYYKnMyGsFd+Q0 ALlRgTbkURBhoeUUy1bZwPBp5EaiiF7d8QPH5IqPsNZUwbYmkFAdFoiGh VaEbxmMAzfo6G9+bHnl6hqDtyjftLCEeygZjxh3vvkhM4I6RuxY0BtTLj f5oQA858GTY7CT1AWsfuhR/yARjgLmUrI26wY18P3wc2XQJpfyJGoDkFf wjWm+78bmVTk2moBoBMO57hNhmypRhIIF60qhxmczVZG8YblrRTLf8B7j JdPsNUGY0mxs57Uqk7jTrRbWRyDroyTinJ9JF/Rku8wubBleAs+dHevuQ Q==; IronPort-SDR: 8ob/T4gQr8M6urM+rxKx27/saPEVjn3oqAdRifAATuP3wNjLMTL8QfKRVUv5uQPFj+/aTHNbiO MyNnlJ6XgAFYl1YgrLDRk1H6gDYumg2tujcVZ9+VLpGKa3d8iE+vJqlJnzlnnaXS5bhKhg0J9j FyxNjMN9oQ6Vr5Rvtvy665timT3DjRSvjW33OE3U2lFFesMua0XErkiK87oGhw28C0s3pLA3Vg lBv6yg4Xn6Fub5Xg7LIDYlTUumGCWLEW37r4RC7hpNGoZTZOXUhsQZn0EgZh0+BHjlAI7sA8B5 eLo= X-IronPort-AV: E=Sophos;i="5.78,401,1599494400"; d="scan'208";a="155876660" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 08 Dec 2020 15:34:21 +0800 IronPort-SDR: v9dvvU8+JTCJ9yv4BXGnm5rl1ODLOvdPTEpeUAwhpqF0801tp7jzz64hDvLP+GRlYuUmg5epX3 ca5hoZME6TV3twvz1qLH8SUL0vvs217ok= 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; 07 Dec 2020 23:18:21 -0800 IronPort-SDR: /2e545MaPDjNVm8VmK2AMS85SSn7t098lYKbaF8mEWlWb7AEGsPXNBZ4VWSgeC9vQm1SnS2Mc9 gmvcoblWAW+w== 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; 07 Dec 2020 23:34:19 -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 v5 10/21] dt-binding: mfd: Document canaan, k210-sysctl bindings Date: Tue, 8 Dec 2020 16:33:44 +0900 Message-Id: <20201208073355.40828-11-damien.lemoal@wdc.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201208073355.40828-1-damien.lemoal@wdc.com> References: <20201208073355.40828-1-damien.lemoal@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@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>; + }; + };