From patchwork Fri Apr 6 15:13:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lina Iyer X-Patchwork-Id: 895738 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="JHcqf/eV"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="dnxn7lIz"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40HjtW1jDnz9s16 for ; Sat, 7 Apr 2018 01:15:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752338AbeDFPOq (ORCPT ); Fri, 6 Apr 2018 11:14:46 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:40192 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752322AbeDFPOm (ORCPT ); Fri, 6 Apr 2018 11:14:42 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 8CB9D60274; Fri, 6 Apr 2018 15:14:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523027681; bh=F9KOdbyoT+hgKlDccBn5pg5yPIQebGDQC+RIT1Tkeco=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JHcqf/eVHnYC73OVVxsLkR64P2sA70XRAhJqmgK9YDXxRs2qgMMjl5tnWLluS4A5F eSpOCY2on8pZJraC97RsPqbdVA5Jiu9e4Y4Kt8CGmYsoSn9mTdFkaR8N47j2JgJASA HclF59eFJYgKTjYAHyzy8a6e2rVcrKXsoVwdAXrI= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from codeaurora.org (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: ilina@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id A1FB1602BA; Fri, 6 Apr 2018 15:14:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523027680; bh=F9KOdbyoT+hgKlDccBn5pg5yPIQebGDQC+RIT1Tkeco=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dnxn7lIzglfMQ7bBYrG1jsuLFzdvvJ7r8luhmC7WWu1jIixpIu31/zSMFUgRUt2rL axMz980oIukULv4ZHGHWxxozDp5t42Q1CLaPkg5k8/1i823Wg2dEA82pFGxSVaUong rhqQw6DCQIvJkeLvCH0BklpUBOtVf5mrHDh1mksc= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org A1FB1602BA Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=ilina@codeaurora.org From: Lina Iyer To: andy.gross@linaro.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org Cc: rnayak@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, sboyd@kernel.org, evgreen@chromium.org, dianders@chromium.org, Lina Iyer , devicetree@vger.kernel.org, Mahesh Sivasubramanian Subject: [PATCH v7 [RESEND] 2/2] dt-bindings: introduce Command DB for QCOM SoCs Date: Fri, 6 Apr 2018 09:13:56 -0600 Message-Id: <20180406151356.7818-3-ilina@codeaurora.org> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180406151356.7818-1-ilina@codeaurora.org> References: <20180406151356.7818-1-ilina@codeaurora.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Mahesh Sivasubramanian Command DB provides information on shared resources like clocks, regulators etc., probed at boot by the remote subsytem and made available in shared memory. Cc: devicetree@vger.kernel.org Signed-off-by: Mahesh Sivasubramanian Signed-off-by: Lina Iyer Reviewed-by: Bjorn Andersson Reviewed-by: Stephen Boyd Reviewed-by: Evan Green Reviewed-by: Rob Herring --- Changes in v7: - Fix description of 'reg' property Changes in v6: - Move to bindings/reserved-memory - Remove indirection address and use only the actual reserved memory Changes in v4: - Fix unwanted capitalization - Add reg property --- .../bindings/reserved-memory/qcom,cmd-db.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt diff --git a/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt new file mode 100644 index 000000000000..1390cd3a7f0e --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt @@ -0,0 +1,36 @@ +Command DB +--------- + +Command DB is a database that provides a mapping between resource key and the +resource address for a system resource managed by a remote processor. The data +is stored in a shared memory region and is loaded by the remote processor. + +Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for +controlling shared resources. Depending on the board configuration the shared +resource properties may change. These properties are dynamically probed by the +remote processor and made available in the shared memory. + +The bindings for Command DB is specified in the reserved-memory section in +devicetree. The devicetree representation of the command DB driver should be: + +Properties: +- compatible: + Usage: required + Value type: + Definition: Should be "qcom,cmd-db" + +- reg: + Usage: required + Value type: + Definition: The register address that points to the actual location of + the Command DB in memory. + +Example: + + reserved-memory { + [...] + qcom,cmd-db@85fe0000 { + reg = <0x0 0x85fe0000 0x0 0x20000>; + compatible = "qcom,cmd-db"; + }; + };