From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756294AbcHaAFF (ORCPT ); Tue, 30 Aug 2016 20:05:05 -0400 Received: from mail-qk0-f173.google.com ([209.85.220.173]:35741 "EHLO mail-qk0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751962AbcHaAEq (ORCPT ); Tue, 30 Aug 2016 20:04:46 -0400 From: Laura Abbott To: Rob Herring , Frank Rowand , Sumit Semwal , Andrew Andrianov , arve@android.com, Riley Andrews Cc: Laura Abbott , devel@driverdev.osuosl.org, devicetree@vger.kernel.org, Tom Gall , romlem@google.com, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Colin Cross , John Stultz , mitchelh@codeaurora.org, linux-arm-kernel@lists.infradead.org, Chen Feng , Arnd Bergmann , Mark Rutland , Bryan Huntsman Subject: [PATCHv3 1/3] devicetree: bindings for Ion Date: Tue, 30 Aug 2016 17:04:27 -0700 Message-Id: <1472601869-19469-2-git-send-email-labbott@redhat.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1472601869-19469-1-git-send-email-labbott@redhat.com> References: <1472601869-19469-1-git-send-email-labbott@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds a base set of devicetree bindings for the Ion memory manager. This supports setting up the generic set of heaps and their properties. Signed-off-by: Laura Abbott --- drivers/staging/android/ion/devicetree.txt | 51 ++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/staging/android/ion/devicetree.txt diff --git a/drivers/staging/android/ion/devicetree.txt b/drivers/staging/android/ion/devicetree.txt new file mode 100644 index 0000000..16871527 --- /dev/null +++ b/drivers/staging/android/ion/devicetree.txt @@ -0,0 +1,51 @@ +Ion Memory Manager + +Ion is a memory manager that allows for sharing of buffers via dma-buf. +Ion allows for different types of allocation via an abstraction called +a 'heap'. A heap represents a specific type of memory. Each heap has +a different type. There can be multiple instances of the same heap +type. + +Specific heap instances are tied to heap IDs. Heap IDs are not to be specified +in the devicetree. + +Required properties for Ion + +- compatible: "linux,ion" PLUS a compatible property for the device + +All child nodes of a linux,ion node are interpreted as heaps + +required properties for heaps + +- compatible: compatible string for a heap type PLUS a compatible property +for the specific instance of the heap. Current heap types +-- linux,ion-heap-system +-- linux,ion-heap-system-contig +-- linux,ion-heap-carveout +-- linux,ion-heap-chunk +-- linux,ion-heap-dma +-- linux,ion-heap-custom + +Optional properties +- memory-region: A phandle to a memory region. Required for DMA heap type +(see reserved-memory.txt for details on the reservation) + +Example: + + ion { + compatbile = "hisilicon,ion", "linux,ion"; + + ion-system-heap { + compatbile = "hisilicon,system-heap", "linux,ion-heap-system" + }; + + ion-camera-region { + compatible = "hisilicon,camera-heap", "linux,ion-heap-dma" + memory-region = <&camera_region>; + }; + + ion-fb-region { + compatbile = "hisilicon,fb-heap", "linux,ion-heap-dma" + memory-region = <&fb_region>; + }; + } -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laura Abbott Subject: [PATCHv3 1/3] devicetree: bindings for Ion Date: Tue, 30 Aug 2016 17:04:27 -0700 Message-ID: <1472601869-19469-2-git-send-email-labbott@redhat.com> References: <1472601869-19469-1-git-send-email-labbott@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1472601869-19469-1-git-send-email-labbott@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: Rob Herring , Frank Rowand , Sumit Semwal , Andrew Andrianov , arve@android.com, Riley Andrews Cc: devel@driverdev.osuosl.org, devicetree@vger.kernel.org, Arnd Bergmann , Tom Gall , romlem@google.com, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Colin Cross , Bryan Huntsman , John Stultz , Chen Feng , Mark Rutland , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org This adds a base set of devicetree bindings for the Ion memory manager. This supports setting up the generic set of heaps and their properties. Signed-off-by: Laura Abbott --- drivers/staging/android/ion/devicetree.txt | 51 ++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/staging/android/ion/devicetree.txt diff --git a/drivers/staging/android/ion/devicetree.txt b/drivers/staging/android/ion/devicetree.txt new file mode 100644 index 0000000..16871527 --- /dev/null +++ b/drivers/staging/android/ion/devicetree.txt @@ -0,0 +1,51 @@ +Ion Memory Manager + +Ion is a memory manager that allows for sharing of buffers via dma-buf. +Ion allows for different types of allocation via an abstraction called +a 'heap'. A heap represents a specific type of memory. Each heap has +a different type. There can be multiple instances of the same heap +type. + +Specific heap instances are tied to heap IDs. Heap IDs are not to be specified +in the devicetree. + +Required properties for Ion + +- compatible: "linux,ion" PLUS a compatible property for the device + +All child nodes of a linux,ion node are interpreted as heaps + +required properties for heaps + +- compatible: compatible string for a heap type PLUS a compatible property +for the specific instance of the heap. Current heap types +-- linux,ion-heap-system +-- linux,ion-heap-system-contig +-- linux,ion-heap-carveout +-- linux,ion-heap-chunk +-- linux,ion-heap-dma +-- linux,ion-heap-custom + +Optional properties +- memory-region: A phandle to a memory region. Required for DMA heap type +(see reserved-memory.txt for details on the reservation) + +Example: + + ion { + compatbile = "hisilicon,ion", "linux,ion"; + + ion-system-heap { + compatbile = "hisilicon,system-heap", "linux,ion-heap-system" + }; + + ion-camera-region { + compatible = "hisilicon,camera-heap", "linux,ion-heap-dma" + memory-region = <&camera_region>; + }; + + ion-fb-region { + compatbile = "hisilicon,fb-heap", "linux,ion-heap-dma" + memory-region = <&fb_region>; + }; + } -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: labbott@redhat.com (Laura Abbott) Date: Tue, 30 Aug 2016 17:04:27 -0700 Subject: [PATCHv3 1/3] devicetree: bindings for Ion In-Reply-To: <1472601869-19469-1-git-send-email-labbott@redhat.com> References: <1472601869-19469-1-git-send-email-labbott@redhat.com> Message-ID: <1472601869-19469-2-git-send-email-labbott@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This adds a base set of devicetree bindings for the Ion memory manager. This supports setting up the generic set of heaps and their properties. Signed-off-by: Laura Abbott --- drivers/staging/android/ion/devicetree.txt | 51 ++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/staging/android/ion/devicetree.txt diff --git a/drivers/staging/android/ion/devicetree.txt b/drivers/staging/android/ion/devicetree.txt new file mode 100644 index 0000000..16871527 --- /dev/null +++ b/drivers/staging/android/ion/devicetree.txt @@ -0,0 +1,51 @@ +Ion Memory Manager + +Ion is a memory manager that allows for sharing of buffers via dma-buf. +Ion allows for different types of allocation via an abstraction called +a 'heap'. A heap represents a specific type of memory. Each heap has +a different type. There can be multiple instances of the same heap +type. + +Specific heap instances are tied to heap IDs. Heap IDs are not to be specified +in the devicetree. + +Required properties for Ion + +- compatible: "linux,ion" PLUS a compatible property for the device + +All child nodes of a linux,ion node are interpreted as heaps + +required properties for heaps + +- compatible: compatible string for a heap type PLUS a compatible property +for the specific instance of the heap. Current heap types +-- linux,ion-heap-system +-- linux,ion-heap-system-contig +-- linux,ion-heap-carveout +-- linux,ion-heap-chunk +-- linux,ion-heap-dma +-- linux,ion-heap-custom + +Optional properties +- memory-region: A phandle to a memory region. Required for DMA heap type +(see reserved-memory.txt for details on the reservation) + +Example: + + ion { + compatbile = "hisilicon,ion", "linux,ion"; + + ion-system-heap { + compatbile = "hisilicon,system-heap", "linux,ion-heap-system" + }; + + ion-camera-region { + compatible = "hisilicon,camera-heap", "linux,ion-heap-dma" + memory-region = <&camera_region>; + }; + + ion-fb-region { + compatbile = "hisilicon,fb-heap", "linux,ion-heap-dma" + memory-region = <&fb_region>; + }; + } -- 2.7.4