From patchwork Fri Oct 25 22:50:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Stultz X-Patchwork-Id: 1184469 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) 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=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="QuTmYOTq"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 470K7v4pWrz9sPp for ; Sat, 26 Oct 2019 09:50:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725963AbfJYWuS (ORCPT ); Fri, 25 Oct 2019 18:50:18 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:32876 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726304AbfJYWuS (ORCPT ); Fri, 25 Oct 2019 18:50:18 -0400 Received: by mail-pf1-f193.google.com with SMTP id c184so2596100pfb.0 for ; Fri, 25 Oct 2019 15:50:17 -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:in-reply-to:references; bh=/QsSnbqT/vxBzyqQX0KdepymXuDj6dGQtXlO9dbOSkk=; b=QuTmYOTqrurVmJ/xuipLBhM7GLFY5pGr1iJX3QKVdcKK/H8I/5AdYHQwYMY2NUiqXc AxSegHg7VxQ7X/0azpl7Q8w46j+KDFXLJrEkkWcH6302yTkS51/vcbuJFQHzVwUgBWj6 JzKzOF5iC3EH7xZqAoCQULcCl2yXADIIzruVCenqNO7lW51zLg2HmLfFuT1VYsYAmSL3 3hnxUHcxN+1kHcPwaaGoAQ+jv/eXxBlLQUSk4/h9aGt3i0AK0wdV7K8dTsU2mZ3h+46J Faj4npHwJnvDE245x+lkyKBoXHWzL1LDqC/pK//cfEiAkdcXSCixwBIguLUCDpUHNjem amjg== 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:in-reply-to :references; bh=/QsSnbqT/vxBzyqQX0KdepymXuDj6dGQtXlO9dbOSkk=; b=BrQRc+4NmjMufba8cZJ1mqfNySIBSXQRuAhtGyMpTelWc2aOH4TBSA28JflRIiERp8 m9+NHB8yK/XI5HbPWUvWCBqEmNQk+SxocObniCI4XdACnOwfqovO6l/knqN5tP1+v4ak 0idlgqimR7WJrE0OU+AqUw3ZCp+nDHC5Hkj7RlC1QC+p2j9kHTzsOTEe3gyegyucV/ED xcRCDfXN2MWVDyWnsLiMWCMP8cB6jKGLrSOK6nXdOGmjiDaiYbJOIrQRgR/Prp9TO9NU +QDdBec5UI27jlgoN9H0AZjJI+Z8a2JFFe3l37T60OwQMqO/OTjj12trJA3kbafRpG2y i/mA== X-Gm-Message-State: APjAAAWzQfrMtZTc76Yny3Uy0rsez+61IhqToFYOPpbN4ebp18cyn4Fw MnEcKku5tFpiWmc0JX8pogXCTw== X-Google-Smtp-Source: APXvYqziC/rX8OG0ZvE60odRUgM4+OMxyzH9YT1VE6orCRtoxz0Nkzr2UbFad4Lx05yIE7lyxETSEw== X-Received: by 2002:a63:5c21:: with SMTP id q33mr7104380pgb.78.1572043817153; Fri, 25 Oct 2019 15:50:17 -0700 (PDT) Received: from localhost.localdomain ([2601:1c2:680:1319:692:26ff:feda:3a81]) by smtp.gmail.com with ESMTPSA id o15sm2758018pjs.14.2019.10.25.15.50.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2019 15:50:16 -0700 (PDT) From: John Stultz To: lkml Cc: John Stultz , Rob Herring , Mark Rutland , Laura Abbott , Benjamin Gaignard , Sumit Semwal , Liam Mark , Pratik Patel , Brian Starkey , "Andrew F . Davis" , Chenbo Feng , Alistair Strachan , Sandeep Patil , Hridya Valsaraju , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC][PATCH 1/3] dt-bindings: dma-buf: heaps: Describe CMA regions to be added to dmabuf heaps interface. Date: Fri, 25 Oct 2019 22:50:07 +0000 Message-Id: <20191025225009.50305-2-john.stultz@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191025225009.50305-1-john.stultz@linaro.org> References: <20191025225009.50305-1-john.stultz@linaro.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This binding specifies which CMA regions should be added to the dmabuf heaps interface. Cc: Rob Herring Cc: Mark Rutland Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Andrew F. Davis Cc: Chenbo Feng Cc: Alistair Strachan Cc: Sandeep Patil Cc: Hridya Valsaraju Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Stultz --- .../bindings/dma/dmabuf-heap-cma.txt | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt diff --git a/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt b/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt new file mode 100644 index 000000000000..bde7b1f1c269 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/dmabuf-heap-cma.txt @@ -0,0 +1,31 @@ +* DMA-BUF CMA Heap + +Specifies a CMA region that should be added to the dma-buf heaps +interface. + +Required properties: +- compatible: Must be "dmabuf-heap-cma" +- memory-region: phandle to a CMA reserved memory node + +Example: +This example has a camera CMA node in reserved memory, which is then +referenced by the dmabuf-heap-cma node. + + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + ... + cma_camera: cma-camera { + compatible = "shared-dma-pool"; + reg = <0x0 0x24C00000 0x0 0x4000000>; + reusable; + }; + ... + }; + + cma_heap { + compatible = "dmabuf-heap-cma"; + memory-region = <&cma_camera>; + };