From patchwork Mon Jan 23 21:28:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 646220 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 3AC68C38142 for ; Mon, 23 Jan 2023 21:31:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233094AbjAWVbO (ORCPT ); Mon, 23 Jan 2023 16:31:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55840 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231787AbjAWVbN (ORCPT ); Mon, 23 Jan 2023 16:31:13 -0500 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47A303346D; Mon, 23 Jan 2023 13:31:12 -0800 (PST) Received: by mail-ej1-x632.google.com with SMTP id mg12so34098710ejc.5; Mon, 23 Jan 2023 13:31:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=ppdW84a0SQYG4k4BGWbGIbCGp/ezutsaizpkowzYII4=; b=SxosNVpoA4n4v1mM4hjrl7EWQjEVdhjVSKwY4wB6A7zbLhV4olFTRC2ag5fEwbTUb2 1weTDmGfKALKHf1iyrFUR5/zapDu9JtJrau6mxyOCE6f3E7rsAJ09rT6oo8BTIJt5u8z RtU3OfKNz5kwlmElIkUq1EQECuu1ya74bJsC9wfWmCqXSjs/ENlnsItsdMXfxdJJwBHl wZRQDxAA9Q8rSeyD6laFEuKDcu+g/Ujrj39bbs3aePGVy4N8lDvqe0Kaa+7Bq498hNzN R6bgoL10S2I3ubBtsNYcOYjnUMiIir5Alhdx7oBV/YzXzr5xNfeulY7O3uN4GuBzqz4O P80Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ppdW84a0SQYG4k4BGWbGIbCGp/ezutsaizpkowzYII4=; b=WyI06wiSXgLcjR1xFDlOmfs8ZbPDLU4Kn0HXnk9OJ3MKyrhHp893iV/ruM5mDNT75Q l71wGpwjrUEH4kMdH4UMQlb3P0PGm4c3CQcB0F9P1d1sf0NQG7+Zsrftj6cSov+TnHe7 VuV1vsRq2GPBvCO1EHdArKUbrE9b3QN8MmqBgAJ39gL/2nSYiZDx2io/8HS8uc5AxLhg t30SMkKYdHL3CXqR0POfGWzvNRr4oGL6j1PotZiMCJZexDnYrzGCWC9sZWLNPNmS2RVC oKMsErHyWz1xxqK/q2j8obpOvfyEvm5KWIFpktSSGEbWxxw8UXRCfftiyRQw7TIaCr+S IGhg== X-Gm-Message-State: AFqh2krCyGd1B1idc+Zm46xwFLfXs3PCoNcoTht2jQhrkvhMkPQb3f7t Ft+dlsObmT93XAKl9C3d0/g= X-Google-Smtp-Source: AMrXdXsMnmrNmfbXjdlkXwkZoLz0pQ+2wP521XDFsAYfrWEjIMh5t4BBWLO/BsF5i1V9UbMiwSnExQ== X-Received: by 2002:a17:907:2395:b0:871:629:227c with SMTP id vf21-20020a170907239500b008710629227cmr22744678ejb.66.1674509470778; Mon, 23 Jan 2023 13:31:10 -0800 (PST) Received: from ?IPV6:2a01:c23:bc5b:9400:dc4c:6fb7:47b2:beb7? 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[2a01:c23:bc5b:9400:dc4c:6fb7:47b2:beb7]) by smtp.googlemail.com with ESMTPSA id 8-20020a170906328800b00871cb1b8f63sm11109155ejw.26.2023.01.23.13.31.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Jan 2023 13:31:10 -0800 (PST) Message-ID: <440a7cad-d48f-8975-4dfd-265b235bf629@gmail.com> Date: Mon, 23 Jan 2023 22:28:49 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: [PATCH 5/8] dt-bindings: rtc: Add Amlogic Meson vrtc controller binding Content-Language: en-US From: Heiner Kallweit To: Rob Herring , Krzysztof Kozlowski , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Alessandro Zummo , Alexandre Belloni , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Thomas Gleixner , Marc Zyngier , Linus Walleij Cc: "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Amlogic Meson..." , linux-pwm@vger.kernel.org, linux-rtc@vger.kernel.org, "linux-gpio@vger.kernel.org" References: In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add Amlogic Meson vrtc controller binding. Tested with make targets dt_binding_check and dtbs_check. Signed-off-by: Heiner Kallweit --- .../bindings/rtc/amlogic,meson-vrtc.yaml | 50 +++++++++++++++++++ .../bindings/rtc/rtc-meson-vrtc.txt | 22 -------- 2 files changed, 50 insertions(+), 22 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt diff --git a/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml b/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml new file mode 100644 index 000000000..26a70b3ce --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rtc/amlogic,meson-vrtc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic Virtual RTC (VRTC) + +maintainers: + - Neil Armstrong + +description: | + This is a Linux interface to an RTC managed by firmware, hence it's + virtual from a Linux perspective. The interface is 1 register where + an alarm time (in seconds) is to be written. + The alarm register is a simple scratch register shared between the + application processors (AP) and the secure co-processor (SCP.) When + the AP suspends, the SCP will use the value of this register to + program an always-on timer before going sleep. When the timer expires, + the SCP will wake up and will then wake the AP. + +allOf: + - $ref: rtc.yaml# + +properties: + compatible: + enum: + - amlogic,meson-vrtc + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + bus@ff800000 { + reg = <0x0 0xff800000 0x0 0x100000>; + #address-cells = <2>; + #size-cells = <2>; + + rtc@a8 { + compatible = "amlogic,meson-vrtc"; + reg = <0x0 0x000a8 0x0 0x4>; + }; + }; diff --git a/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt b/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt deleted file mode 100644 index c014f54a9..000000000 --- a/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt +++ /dev/null @@ -1,22 +0,0 @@ -* Amlogic Virtual RTC (VRTC) - -This is a Linux interface to an RTC managed by firmware, hence it's -virtual from a Linux perspective. The interface is 1 register where -an alarm time (in seconds) is to be written. - -Required properties: -- compatible: should be "amlogic,meson-vrtc" -- reg: physical address for the alarm register - -The alarm register is a simple scratch register shared between the -application processors (AP) and the secure co-processor (SCP.) When -the AP suspends, the SCP will use the value of this register to -program an always-on timer before going sleep. When the timer expires, -the SCP will wake up and will then wake the AP. - -Example: - - vrtc: rtc@0a8 { - compatible = "amlogic,meson-vrtc"; - reg = <0x0 0x000a8 0x0 0x4>; - };