From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerry-ch Chen Subject: [RFC PATCH V0 3/7] [media] dt-bindings: mt8183: Added FD-SMEM dt-bindings Date: Wed, 20 Feb 2019 15:48:09 +0800 Message-ID: <1550648893-42050-4-git-send-email-Jerry-Ch.chen@mediatek.com> References: <1550648893-42050-1-git-send-email-Jerry-Ch.chen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1550648893-42050-1-git-send-email-Jerry-Ch.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+glpam-linux-mediatek=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: hans.verkuil-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org, laurent.pinchart+renesas-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org, tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, mchehab-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sean.Cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, Rynn.Wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, holmes.chiou-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, Jerry-ch Chen , jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, sj.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, yuzhao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, zwisler-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, christie.yu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, frederic.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org This patch adds the DT binding documentation for the shared memory between Face Detection unit of the camera system and the co-processor in Mediatek SoCs. Signed-off-by: Jerry-ch Chen --- .../devicetree/bindings/media/mediatek,fd_smem.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/mediatek,fd_smem.txt diff --git a/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt b/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt new file mode 100644 index 0000000..6f7c836 --- /dev/null +++ b/Documentation/devicetree/bindings/media/mediatek,fd_smem.txt @@ -0,0 +1,28 @@ +Mediatek FD Shared Memory Device + +Mediatek FD Shared Memory Device is used to manage shared memory +among CPU, FD and coprocessor. It is associated with a reserved +memory region (Please see Documentation/devicetree/bindings/ +reserved-memory/mediatek,reserve-memory-fd_smem.txt) and +provide the context to allocate memory with dma addresses. + +Required properties: +- compatible: Shall be "mediatek,fd_smem" + +- iommus: Shall point to the respective IOMMU block with master port + as argument. Please set the ports which may be accessed + through the common path. You can see + Documentation/devicetree/bindings/iommu/mediatek,iommu.txt + for the detail. + +- mediatek,larb: must contain the local arbiters in the current SoCs. + Please set the larb of imgsys for FD if you are using FD function. + You can see Documentation/devicetree/bindings/memory-controllers/ + mediatek,smi-larb.txt for the detail. + +Example: + fd_smem: fd_smem { + compatible = "mediatek,fd_smem"; + mediatek,larb = <&larb5>; + iommus = <&iommu M4U_PORT_CAM_IMGI>; + }; -- 1.9.1