From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752541AbeBHTwP (ORCPT ); Thu, 8 Feb 2018 14:52:15 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:35820 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752448AbeBHTwJ (ORCPT ); Thu, 8 Feb 2018 14:52:09 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 060DB605A5 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: sboyd@codeaurora.org, rnayak@codeaurora.org, msivasub@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, Lina Iyer , devicetree@vger.kernel.org Subject: [PATCH v2 2/2] dt-bindings: introduce Command DB for QCOM SoCs Date: Thu, 8 Feb 2018 12:51:54 -0700 Message-Id: <20180208195154.3580-3-ilina@codeaurora.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180208195154.3580-1-ilina@codeaurora.org> References: <20180208195154.3580-1-ilina@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 --- .../devicetree/bindings/arm/msm/cmd-db.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/msm/cmd-db.txt diff --git a/Documentation/devicetree/bindings/arm/msm/cmd-db.txt b/Documentation/devicetree/bindings/arm/msm/cmd-db.txt new file mode 100644 index 000000000000..e21666e40ebf --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/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 devicetree representation of the command DB driver should be: + +PROPERTIES: +- compatible: + Usage: required + Value type: + Definition: Should be "qcom,cmd-db" + +- memory-region: + Usage: required + Value type: + Definition: The phandle to the reserved memory region. + +Example: + + reserved-memory { + [...] + cmd_db_mem: qcom,cmd-db@c3f000c { + reg = <0x0 0xc3f000c 0x0 0x8>; + }; + }; + + qcom,cmd-db@c3f000c { + compatible = "qcom,cmd-db"; + memory-region = <&cmd_db_mem>; + }; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project