From patchwork Tue Oct 24 09:06:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Liu X-Patchwork-Id: 737658 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 A89BDC00A8F for ; Tue, 24 Oct 2023 09:07:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229595AbjJXJHG (ORCPT ); Tue, 24 Oct 2023 05:07:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49880 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233962AbjJXJHF (ORCPT ); Tue, 24 Oct 2023 05:07:05 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B3A0120; Tue, 24 Oct 2023 02:07:03 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1c434c33ec0so26979715ad.3; Tue, 24 Oct 2023 02:07:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1698138423; x=1698743223; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=palBtRjhdsNKVFR4Z7sz7xV1QIa2igJzdiqlgzEfdQo=; b=hbvBXnK8Th70hF4StuO9mzT71pgJOq6qLrJli4xJLuAI2m31ttXoJxZR3qAsX6df6I rFG8fmjlwYsQDIcoHibX3s7Uqxd+vNcJniez7DwNehFEkbNg/uuRSznfwZWfdt/dT6HS A40g1U9NOBdrWLiTF573tqZWDH95zgt+Y0xiB2MQeJJcyRhl7YfCE/8URTvk9FKOEaOG 0SfAMhr7cOv5pebG0Y4b3xcBJHJoQFUZYIL26h0M/C6bR/soDf6mEHk3UmbmYlYsBX/C xNN20IkaetmgGlVN6y8uC729tvwxkIGyAo2O19lFMZm5lLyvC+whO4kxLyGPRbtyqJhS piyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698138423; x=1698743223; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=palBtRjhdsNKVFR4Z7sz7xV1QIa2igJzdiqlgzEfdQo=; b=JGyTQgoVNmWtuSsQ61YwhYplZ197eyuwMdCaQfZ3iukLNmNCKitTMYuSRo+Z8ClAU6 l6MhS/Sa1LiKo5aNUJcll7VE711M0RYmx7OboYnBno6CMywFRrYwCX82UxM5Gztbavqo yNEQzxxUvSenDYkYcKUBCPnhjfmWkULeAV45wY8XDo3WsV+0N/asjWKnJsLOAyM971gX jAIi6jaiPipghYzMvG3qKoKVJmFFOmLU0DgSa/IBdVY1AWJoM1xH2//fWhg301i43EKp MbUUsgas165YbfaqaWMWuGVslYofUDX9YDrbbXFPHUdhv8V30WFl3dzramUDWMsLqX1M HPWg== X-Gm-Message-State: AOJu0YzoxU3U8yYdrSoq4zgb+LdyTGBe5oLm3+YO+RVzVgEtW42i5kJR Ub6ooUvmxAMxdLoyykfuZcTY/gAx61w= X-Google-Smtp-Source: AGHT+IFMziS3HBLi9OJgEgkfNJsIqawPXjSb6QqV0/hxIOzzXcDksvrVKwZFXLi5IPFJ4/3Vx4THHg== X-Received: by 2002:a17:903:1c8:b0:1c9:d6f8:1902 with SMTP id e8-20020a17090301c800b001c9d6f81902mr9932828plh.15.1698138422955; Tue, 24 Oct 2023 02:07:02 -0700 (PDT) Received: from cs20-buildserver.lan ([1.200.144.223]) by smtp.gmail.com with ESMTPSA id c24-20020a170902d91800b001c9ab91d3d7sm7055324plz.37.2023.10.24.02.07.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Oct 2023 02:07:02 -0700 (PDT) From: Jim Liu To: jim.t90615@gmail.com, JJLIU0@nuvoton.com, linus.walleij@linaro.org, krzysztof.kozlowski+dt@linaro.org, brgl@bgdev.pl Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org Subject: [PATCH v6 1/3] dt-bindings: gpio: add NPCM sgpio driver bindings Date: Tue, 24 Oct 2023 17:06:29 +0800 Message-Id: <20231024090631.3359592-2-jim.t90615@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231024090631.3359592-1-jim.t90615@gmail.com> References: <20231024090631.3359592-1-jim.t90615@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add dt-bindings document for the Nuvoton NPCM7xx sgpio driver Signed-off-by: Jim Liu Reviewed-by: Rob Herring --- Changes for v6: - Drop quotes for $ref - Add and drop '|' for description - Add space after 'exposed.' - remove status Changes for v5: - remove bus bus-frequency - modify in/out description Changes for v4: - modify in/out property - modify bus-frequency property Changes for v3: - modify description - modify in/out property name Changes for v2: - modify description --- .../bindings/gpio/nuvoton,sgpio.yaml | 86 +++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml diff --git a/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml b/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml new file mode 100644 index 000000000000..ddf01a77b8f8 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml @@ -0,0 +1,86 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/nuvoton,sgpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton SGPIO controller + +maintainers: + - Jim LIU + +description: | + This SGPIO controller is for NUVOTON NPCM7xx and NPCM8xx SoC. + Nuvoton NPCM7xx SGPIO module is combine serial to parallel IC (HC595) + and parallel to serial IC (HC165), and use APB3 clock to control it. + This interface has 4 pins (D_out , D_in, S_CLK, LDSH). + NPCM7xx/NPCM8xx have two sgpio module each module can support up + to 64 output pins,and up to 64 input pin, the pin is only for gpi or gpo. + GPIO pins have sequential, First half is gpo and second half is gpi. + GPIO pins can be programmed to support the following options + - Support interrupt option for each input port and various interrupt + sensitivity option (level-high, level-low, edge-high, edge-low) + - ngpios is number of nuvoton,input-ngpios GPIO lines and nuvoton,output-ngpios GPIO lines. + nuvoton,input-ngpios GPIO lines is only for gpi. + nuvoton,output-ngpios GPIO lines is only for gpo. + +properties: + compatible: + enum: + - nuvoton,npcm750-sgpio + - nuvoton,npcm845-sgpio + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + nuvoton,input-ngpios: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The numbers of GPIO's exposed. GPIO lines is only for gpi. + minimum: 0 + maximum: 64 + + nuvoton,output-ngpios: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The numbers of GPIO's exposed. GPIO lines is only for gpo. + minimum: 0 + maximum: 64 + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + - interrupts + - nuvoton,input-ngpios + - nuvoton,output-ngpios + - clocks + +additionalProperties: false + +examples: + - | + #include + #include + gpio8: gpio@101000 { + compatible = "nuvoton,npcm750-sgpio"; + reg = <0x101000 0x200>; + clocks = <&clk NPCM7XX_CLK_APB3>; + interrupts = ; + gpio-controller; + #gpio-cells = <2>; + nuvoton,input-ngpios = <64>; + nuvoton,output-ngpios = <64>; + };