From patchwork Sat Apr 11 23:32:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 6202191 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: X-Original-To: patchwork-linux-arm-msm@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 08541BF4A6 for ; Sat, 11 Apr 2015 23:33:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2D07020263 for ; Sat, 11 Apr 2015 23:33:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 03BEF20260 for ; Sat, 11 Apr 2015 23:33:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754123AbbDKXdE (ORCPT ); Sat, 11 Apr 2015 19:33:04 -0400 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:4222 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752789AbbDKXdD (ORCPT ); Sat, 11 Apr 2015 19:33:03 -0400 From: Bjorn Andersson To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Jeffrey Hugo , Andry Gross CC: , linux-arm-msm , Subject: [PATCH v2 1/2] soc: qcom: Add device tree binding for SMEM Date: Sat, 11 Apr 2015 16:32:57 -0700 Message-ID: <1428795178-24312-1-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.8.2.2 MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 Add device tree binding documentation for the Qualcom Shared Memory manager. Signed-off-by: Bjorn Andersson --- Changes since v1: - None .../devicetree/bindings/soc/qcom/qcom,smem.txt | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt new file mode 100644 index 0000000..d90f839 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt @@ -0,0 +1,49 @@ +Qualcomm Shared Memory binding + +This binding describes the Qualcomm Shared Memory, used to share data between +various subsystems and OSes in Qualcomm platforms. + +- compatible: + Usage: required + Value type: + Definition: must be: + "qcom,smem" + +- memory-region: + Usage: required + Value type: + Definition: handle to memory reservation for main smem memory region. + +- reg: + Usage: optional + Value type: + Definition: base address and size pair for any additional memory areas + of the shared memory. + +- hwspinlocks: + Usage: required + Value type: + Definition: reference to a hwspinlock used to protect allocations from + the shared memory + += EXAMPLE + + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + smem_region: smem@fa00000 { + reg = <0xfa00000 0x200000>; + no-map; + }; + }; + + smem@fa00000 { + compatible = "qcom,smem"; + + memory-region = <&smem_region>; + reg = <0xfc428000 0x4000>; + + hwlocks = <&tcsr_mutex 3>; + };