From patchwork Sat May 27 23:23:34 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 9752123 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3DC8C60249 for ; Sat, 27 May 2017 23:23:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1956D27F4B for ; Sat, 27 May 2017 23:23:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EF8C528307; Sat, 27 May 2017 23:23:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5BBD827F4B for ; Sat, 27 May 2017 23:23:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750769AbdE0XXk (ORCPT ); Sat, 27 May 2017 19:23:40 -0400 Received: from mail-pf0-f176.google.com ([209.85.192.176]:35921 "EHLO mail-pf0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbdE0XXj (ORCPT ); Sat, 27 May 2017 19:23:39 -0400 Received: by mail-pf0-f176.google.com with SMTP id m17so32148232pfg.3 for ; Sat, 27 May 2017 16:23:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=buuFTMy0YUrbhjAeSKbvDbUjBfunEPxGWRrq8JXd5q0=; b=jGLLcq6Lt+g75hVGlFE1k/yDA3bdTvEFhAwQlSd712rfQRVjsg3vje5NWdWzUi0PpD 334hKF4ZwxsIGQlw3prwwjMSWejT2bc5cOR1ADaFyJc/EKFDRgC3L0BK8+t0Gsfe1FgZ mkj/M+nmTvy9vncxpJtWzSiOTqIutAyasGQPU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=buuFTMy0YUrbhjAeSKbvDbUjBfunEPxGWRrq8JXd5q0=; b=gNFf2x1eXnLcR0+Y6HHbUfTUHiLyKL+jGAhKlg3nTfygAA0R7VPG0JgD5glFouuT8J flNehtziIoWnDqWo0WTwrjyt+ZM88p7hffyef2tpvaFRNRJwslb+jJXgIAuTjUym7gCi lk/b+Z4/RTiaskI9H5wY/lj3iCq1tt8SK/81cuck9cGod0zhLwaRRi+1Jfpx33998suN f8ydQe1du12ntjJ6jjtGiMGz6lQp7pzPGb+fOQAh3/p4Lz5CX2VrlzJWUb99boRpxXxt wpWJQICUokB2rwaUZHFwlvJ+GALZYlOfqC/ib1XMDjUhJ6ZWJJmokTXEgXU7cFXxO5e9 Biog== X-Gm-Message-State: AODbwcBirf3AGDCRoxJGHNT4aDKh6buUnqgnk3WvNBQ9OW4qokTlAcZ0 he7L7wJUAu1n7fOL X-Received: by 10.101.86.67 with SMTP id m3mr10487255pgs.137.1495927418843; Sat, 27 May 2017 16:23:38 -0700 (PDT) Received: from localhost.localdomain (ip68-111-223-48.sd.sd.cox.net. [68.111.223.48]) by smtp.gmail.com with ESMTPSA id v64sm9518937pfk.86.2017.05.27.16.23.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 27 May 2017 16:23:38 -0700 (PDT) From: Bjorn Andersson To: Andy Gross Cc: Rob Herring , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org Subject: [PATCH v7 1/2] soc: qcom: Add device tree binding for GLINK RPM Date: Sat, 27 May 2017 16:23:34 -0700 Message-Id: <20170527232335.7775-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.12.0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add device tree binding documentation for the Qualcomm GLINK RPM, used for communication with the Resource Power Management subsystem in various Qualcomm SoCs. Acked-by: Rob Herring Signed-off-by: Bjorn Andersson Acked-by: Andy Gross --- Changes since v6: - Change node in example to "mailbox" - Add Rob's ack. .../devicetree/bindings/soc/qcom/qcom,glink.txt | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt new file mode 100644 index 000000000000..50fc20c6ce91 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt @@ -0,0 +1,73 @@ +Qualcomm RPM GLINK binding + +This binding describes the Qualcomm RPM GLINK, a fifo based mechanism for +communication with the Resource Power Management system on various Qualcomm +platforms. + +- compatible: + Usage: required + Value type: + Definition: must be "qcom,glink-rpm" + +- interrupts: + Usage: required + Value type: + Definition: should specify the IRQ used by the remote processor to + signal this processor about communication related events + +- qcom,rpm-msg-ram: + Usage: required + Value type: + Definition: handle to RPM message memory resource + +- mboxes: + Usage: required + Value type: + Definition: reference to the "rpm_hlos" mailbox in APCS, as described + in mailbox/mailbox.txt + += GLINK DEVICES +Each subnode of the GLINK node represent function tied to a virtual +communication channel. The name of the nodes are not important. The properties +of these nodes are defined by the individual bindings for the specific function +- but must contain the following property: + +- qcom,glink-channels: + Usage: required + Value type: + Definition: a list of channels tied to this function, used for matching + the function to a set of virtual channels + += EXAMPLE +The following example represents the GLINK RPM node on a MSM8996 device, with +the function for the "rpm_request" channel defined, which is used for +regualtors and root clocks. + + apcs_glb: mailbox@9820000 { + compatible = "qcom,msm8996-apcs-hmss-global"; + reg = <0x9820000 0x1000>; + + #mbox-cells = <1>; + }; + + rpm_msg_ram: memory@68000 { + compatible = "qcom,rpm-msg-ram"; + reg = <0x68000 0x6000>; + }; + + rpm-glink { + compatible = "qcom,glink-rpm"; + + interrupts = ; + + qcom,rpm-msg-ram = <&rpm_msg_ram>; + + mboxes = <&apcs_glb 0>; + + rpm-requests { + compatible = "qcom,rpm-msm8996"; + qcom,glink-channels = "rpm_requests"; + + ... + }; + };