From patchwork Thu Aug 20 02:53:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 7040481 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BFD53C05AC for ; Thu, 20 Aug 2015 02:57:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D2072207B9 for ; Thu, 20 Aug 2015 02:57:42 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6D8AD207B5 for ; Thu, 20 Aug 2015 02:57:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZSG0j-0005Hs-FM; Thu, 20 Aug 2015 02:55:25 +0000 Received: from mail-pd0-f177.google.com ([209.85.192.177]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZSG0g-0003xW-CZ for linux-arm-kernel@lists.infradead.org; Thu, 20 Aug 2015 02:55:23 +0000 Received: by pdob1 with SMTP id b1so8485368pdo.2 for ; Wed, 19 Aug 2015 19:55:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=GtUebMN8+ktV3UI2cegwH0ec5/BuO1NhV9IrNci/PGI=; b=bHoVFRIE7q2ept4ltulYifNRAM4qWTpqty3pPKM4i7LuXDaYK/ar5ZW59agMi9reg/ /4sISfXQ/Cp1HBHsa7mZV7fbDKBOUA7hPfrU7x4SEQE6LK0bvg0Zy6QAnn3k89zMUV0S d0ctCfDBHhYZDK1eX1+StfmiM2U+UQF9p6wRf2EiLgRG1VKmNsvy5w0IppHc3txMaklk AQs7YINqZ9g8KPuNDgrr/fH1yEx20feMLTkZgfLxa6FXKyTrfUp1xompQ8I362PKJazY UReJe29im/+GqOizfFT1TPR5fc3lBEYqS2MwXdsRev66Sk60UeKzgIJbwr5L6ImbExO/ K65w== X-Gm-Message-State: ALoCoQlTUCtc4Cma3GX0Zr247LRn2t8Sl9qMJMy3+scx9+F1RWU+VU5NqIsKAoLBnq9TAAqD2v2Q X-Received: by 10.70.140.195 with SMTP id ri3mr1816002pdb.64.1440039301422; Wed, 19 Aug 2015 19:55:01 -0700 (PDT) Received: from localhost.localdomain ([116.251.214.16]) by smtp.gmail.com with ESMTPSA id i10sm2402245pdl.8.2015.08.19.19.54.52 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 19 Aug 2015 19:55:00 -0700 (PDT) From: Leo Yan To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , galak@codeaurora.org, Catalin Marinas , Will Deacon , Jassi Brar , Bintian Wang , haojian.zhuang@linaro.org, Yiping Xu , Wei Xu , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, guodong.xu@linaro.org, Jian Zhang , Zhenwei Wang , Haoju Mo , Dan Zhao , kongfei@hisilicon.com, Guangyue Zeng Subject: [PATCH v2 1/3] dt-bindings: mailbox: Document Hi6220 mailbox driver Date: Thu, 20 Aug 2015 10:53:57 +0800 Message-Id: <1440039239-8772-2-git-send-email-leo.yan@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440039239-8772-1-git-send-email-leo.yan@linaro.org> References: <1440039239-8772-1-git-send-email-leo.yan@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150819_195522_630392_AF0E504D X-CRM114-Status: GOOD ( 15.81 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Leo Yan MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Document the new compatible for Hisilicon Hi6220 mailbox driver. Signed-off-by: Leo Yan --- .../bindings/mailbox/hisilicon,hi6220-mailbox.txt | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/hisilicon,hi6220-mailbox.txt diff --git a/Documentation/devicetree/bindings/mailbox/hisilicon,hi6220-mailbox.txt b/Documentation/devicetree/bindings/mailbox/hisilicon,hi6220-mailbox.txt new file mode 100644 index 0000000..3dfb0b0 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/hisilicon,hi6220-mailbox.txt @@ -0,0 +1,57 @@ +Hisilicon Hi6220 Mailbox Driver +=============================== + +Hisilicon Hi6220 mailbox supports up to 32 channels. Each channel +is unidirectional with a maximum message size of 8 words. I/O is +performed using register access (there is no DMA) and the cell +raises an interrupt when messages are received. + +Mailbox Device Node: +==================== + +Required properties: +-------------------- +- compatible: Shall be "hisilicon,hi6220-mbox" +- reg: Contains the mailbox register address range (base + address and length); the first item is for IPC + registers, the second item is shared buffer for + slots. +- #mbox-cells Common mailbox binding property to identify the number + of cells required for the mailbox specifier. Should be 1. +- interrupts: Contains the interrupt information for the mailbox + device. The format is dependent on which interrupt + controller the SoCs use. + +Example: +-------- + + mailbox: mailbox@F7510000 { + #mbox-cells = <1>; + compatible = "hisilicon,hi6220-mbox"; + reg = <0x0 0xF7510000 0x0 0x1000>, /* IPC_S */ + <0x0 0x06DFF800 0x0 0x0800>; /* Mailbox */ + interrupt-parent = <&gic>; + interrupts = <0 94 4>; + }; + + +Mailbox client +=============== + +"mboxes" and the optional "mbox-names" (please see +Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value +of the mboxes property should contain a phandle to the mailbox controller +device node and second argument is the channel index. It must be 0 (hardware +support only one channel). The equivalent "mbox-names" property value can be +used to give a name to the communication channel to be used by the client user. + +Example: +-------- + + stub_clock: stub_clock { + compatible = "hisilicon,hi6220-stub-clk"; + hisilicon,hi6220-clk-sram = <&sram>; + #clock-cells = <1>; + mbox-names = "mbox-tx"; + mboxes = <&mailbox 1>; + };