From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frederic Chen Subject: [RFC PATCH V0 3/7] [media] dt-bindings: mt8183: Added DIP-SMEM dt-bindings Date: Fri, 1 Feb 2019 19:21:27 +0800 Message-ID: <1549020091-42064-4-git-send-email-frederic.chen@mediatek.com> References: <1549020091-42064-1-git-send-email-frederic.chen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1549020091-42064-1-git-send-email-frederic.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: 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-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, sj.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, christie.yu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@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: linux-mediatek@lists.infradead.org This patch adds the DT binding documentation for the shared memory between DIP (Digital Image Processing) unit of the camera ISP system and the co-processor in Mediatek SoCs. Signed-off-by: Frederic Chen --- .../bindings/media/mediatek,dip_smem.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/mediatek,dip_smem.txt diff --git a/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt b/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt new file mode 100644 index 0000000..5533721 --- /dev/null +++ b/Documentation/devicetree/bindings/media/mediatek,dip_smem.txt @@ -0,0 +1,29 @@ +Mediatek ISP Shared Memory Device + +Mediatek ISP Shared Memory Device is used to manage shared memory +among CPU, ISP IPs and coprocessor. It is associated with a reserved +memory region (Please see Documentation\devicetree\bindings\ +reserved-memory\mediatek,reserve-memory-isp_smem.txt) and +and provide the context to allocate memory with dma addresses. + +Required properties: +- compatible: Should be "mediatek,isp_smem" + +- iommus: should 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 camsys for Pass 1 and imgsys for DIP, or both + if you are using all the camera function. You can see + Documentation/devicetree/bindings/memory-controllers/ + mediatek,smi-larb.txt for the detail. + +Example: + isp_smem: isp_smem { + compatible = "mediatek,isp_smem"; + mediatek,larb = <&larb5>; + iommus = <&iommu M4U_PORT_CAM_IMGI>; + }; -- 1.9.1