From patchwork Wed Mar 14 17:13:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lina Iyer X-Patchwork-Id: 885944 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="VN73ghqR"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="ZuzcDJ6O"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 401dcn3RV3z9sVK for ; Thu, 15 Mar 2018 04:14:33 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751405AbeCNROU (ORCPT ); Wed, 14 Mar 2018 13:14:20 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:52500 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751687AbeCNRNi (ORCPT ); Wed, 14 Mar 2018 13:13:38 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 1818860AE0; Wed, 14 Mar 2018 17:13:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521047618; bh=e0AczFglCyZ6AcTVemiiqkccBWHq+HOCKa/SuldozHk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VN73ghqRrdSIkt+DRz6h1fECcxiktU5tqvcQaHmE7wnvaQYKDj1e+16C9twrTDK49 iq6lZGSVjpsgMLGeCp6eTr+dmKMku+f93gNXwpKRZOGhMPcvEx545HoBmgXEPJeBJj HoravdnU+1qkHd0mqn26c62I0JyYVnZMBUwb+HV8= 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 BDB6360AF9; Wed, 14 Mar 2018 17:13:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1521047617; bh=e0AczFglCyZ6AcTVemiiqkccBWHq+HOCKa/SuldozHk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZuzcDJ6O3EvVrEtKHPFMTjPWkncpsAjxH3DnweAsl8GPoz7vSFmHgbink+bs/z7yM mB5gcQFjt0GmJCckYRWfLSyilne20DRZsAl7Xj1Jwhn2Xoq7z7UBFK6icTFEXYn8s+ wXaRMutOGpYea0NGtVn1VuNPgT5GCwOY7H56SfaQ= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BDB6360AF9 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 Cc: linux-soc@vger.kernel.org, rnayak@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, sboyd@kernel.org, Lina Iyer , devicetree@vger.kernel.org, Mahesh Sivasubramanian Subject: [PATCH v5 2/2] dt-bindings: introduce Command DB for QCOM SoCs Date: Wed, 14 Mar 2018 11:13:30 -0600 Message-Id: <20180314171330.1828-3-ilina@codeaurora.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180314171330.1828-1-ilina@codeaurora.org> References: <20180314171330.1828-1-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 --- Changes in v4: - Fix unwanted capitalization - Add reg property --- .../devicetree/bindings/soc/qcom/cmd-db.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/cmd-db.txt diff --git a/Documentation/devicetree/bindings/soc/qcom/cmd-db.txt b/Documentation/devicetree/bindings/soc/qcom/cmd-db.txt new file mode 100644 index 000000000000..5737ed2ac6e8 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/cmd-db.txt @@ -0,0 +1,38 @@ +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 location of the + Command DB in memory. Additionally, specify the address + and size of the actual lacation in memory. + +Example: + + reserved-memory { + [...] + qcom,cmd-db@c3f000c { + reg = <0x0 0xc3f000c 0x0 0x8>, + <0x0 0x85fe0000 0x0 0x20000>; + compatible = "qcom,cmd-db"; + }; + };