From mboxrd@z Thu Jan 1 00:00:00 1970 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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 3A5D8C2D0A8 for ; Mon, 28 Sep 2020 11:45:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F243921D95 for ; Mon, 28 Sep 2020 11:45:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726667AbgI1Lo6 (ORCPT ); Mon, 28 Sep 2020 07:44:58 -0400 Received: from foss.arm.com ([217.140.110.172]:50010 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726566AbgI1Loz (ORCPT ); Mon, 28 Sep 2020 07:44:55 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DEA14113E; Mon, 28 Sep 2020 04:44:54 -0700 (PDT) Received: from usa.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 59EF43F6CF; Mon, 28 Sep 2020 04:44:53 -0700 (PDT) From: Sudeep Holla To: Jassi Brar , Jassi Brar , Viresh Kumar , ALKML , DTML , LKML Cc: Sudeep Holla , Vincent Guittot , Frank Rowand , Bjorn Andersson , Rob Herring , Rob Herring Subject: [PATCH 1/4] dt-bindings: mailbox : arm,mhu: Convert to Json-schema Date: Mon, 28 Sep 2020 12:44:42 +0100 Message-Id: <20200928114445.19689-2-sudeep.holla@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200928114445.19689-1-sudeep.holla@arm.com> References: <20200928114445.19689-1-sudeep.holla@arm.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Viresh Kumar Convert the DT binding over to Json-schema. Reviewed-by: Rob Herring Signed-off-by: Viresh Kumar Signed-off-by: Sudeep Holla --- .../devicetree/bindings/mailbox/arm,mhu.yaml | 87 +++++++++++++++++++ .../devicetree/bindings/mailbox/arm-mhu.txt | 43 --------- 2 files changed, 87 insertions(+), 43 deletions(-) create mode 100644 Documentation/devicetree/bindings/mailbox/arm,mhu.yaml delete mode 100644 Documentation/devicetree/bindings/mailbox/arm-mhu.txt diff --git a/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml b/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml new file mode 100644 index 000000000000..2c8df7979c22 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/arm,mhu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM MHU Mailbox Controller + +maintainers: + - Jassi Brar + +description: | + The ARM's Message-Handling-Unit (MHU) is a mailbox controller that has 3 + independent channels/links to communicate with remote processor(s). MHU links + are hardwired on a platform. A link raises interrupt for any received data. + However, there is no specified way of knowing if the sent data has been read + by the remote. This driver assumes the sender polls STAT register and the + remote clears it after having read the data. The last channel is specified to + be a 'Secure' resource, hence can't be used by Linux running NS. + +# We need a select here so we don't match all nodes with 'arm,primecell' +select: + properties: + compatible: + contains: + const: arm,mhu + required: + - compatible + +properties: + compatible: + items: + - const: arm,mhu + - const: arm,primecell + + reg: + maxItems: 1 + + interrupts: + items: + - description: low-priority non-secure + - description: high-priority non-secure + - description: Secure + maxItems: 3 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: apb_pclk + + '#mbox-cells': + description: Index of the channel. + const: 1 + +required: + - compatible + - reg + - interrupts + - '#mbox-cells' + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + mhuA: mailbox@2b1f0000 { + #mbox-cells = <1>; + compatible = "arm,mhu", "arm,primecell"; + reg = <0 0x2b1f0000 0 0x1000>; + interrupts = <0 36 4>, /* LP-NonSecure */ + <0 35 4>, /* HP-NonSecure */ + <0 37 4>; /* Secure */ + clocks = <&clock 0 2 1>; + clock-names = "apb_pclk"; + }; + + mhu_client_scb: scb@2e000000 { + compatible = "fujitsu,mb86s70-scb-1.0"; + reg = <0 0x2e000000 0 0x4000>; + mboxes = <&mhuA 1>; /* HP-NonSecure */ + }; + }; diff --git a/Documentation/devicetree/bindings/mailbox/arm-mhu.txt b/Documentation/devicetree/bindings/mailbox/arm-mhu.txt deleted file mode 100644 index 4971f03f0b33..000000000000 --- a/Documentation/devicetree/bindings/mailbox/arm-mhu.txt +++ /dev/null @@ -1,43 +0,0 @@ -ARM MHU Mailbox Driver -====================== - -The ARM's Message-Handling-Unit (MHU) is a mailbox controller that has -3 independent channels/links to communicate with remote processor(s). - MHU links are hardwired on a platform. A link raises interrupt for any -received data. However, there is no specified way of knowing if the sent -data has been read by the remote. This driver assumes the sender polls -STAT register and the remote clears it after having read the data. -The last channel is specified to be a 'Secure' resource, hence can't be -used by Linux running NS. - -Mailbox Device Node: -==================== - -Required properties: --------------------- -- compatible: Shall be "arm,mhu" & "arm,primecell" -- reg: Contains the mailbox register address range (base - address and length) -- #mbox-cells Shall be 1 - the index of the channel needed. -- interrupts: Contains the interrupt information corresponding to - each of the 3 links of MHU. - -Example: --------- - - mhu: mailbox@2b1f0000 { - #mbox-cells = <1>; - compatible = "arm,mhu", "arm,primecell"; - reg = <0 0x2b1f0000 0x1000>; - interrupts = <0 36 4>, /* LP-NonSecure */ - <0 35 4>, /* HP-NonSecure */ - <0 37 4>; /* Secure */ - clocks = <&clock 0 2 1>; - clock-names = "apb_pclk"; - }; - - mhu_client: scb@2e000000 { - compatible = "fujitsu,mb86s70-scb-1.0"; - reg = <0 0x2e000000 0x4000>; - mboxes = <&mhu 1>; /* HP-NonSecure */ - }; -- 2.17.1