From: Maxime Ripard Date: Mon, 1 Apr 2019 08:56:41 +0000 (+0200) Subject: dt-bindings: interconnect: Add a dma interconnect name X-Git-Tag: v5.4-rc1~1057^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c43a4469402f3d909c89af2c4523a786636605ea;p=platform%2Fkernel%2Flinux-rpi.git dt-bindings: interconnect: Add a dma interconnect name The current DT bindings assume that the DMA will be performed by the devices through their parent DT node, and rely on that assumption for the address translation using dma-ranges. However, some SoCs have devices that will perform DMA through another bus, with separate address translation rules. We therefore need to express that relationship, through the special interconnect name "dma-mem". Acked-by: Georgi Djakov Signed-off-by: Maxime Ripard Signed-off-by: Rob Herring --- diff --git a/Documentation/devicetree/bindings/interconnect/interconnect.txt b/Documentation/devicetree/bindings/interconnect/interconnect.txt index 5a3c575..6f5d23a 100644 --- a/Documentation/devicetree/bindings/interconnect/interconnect.txt +++ b/Documentation/devicetree/bindings/interconnect/interconnect.txt @@ -51,6 +51,10 @@ interconnect-names : List of interconnect path name strings sorted in the same interconnect-names to match interconnect paths with interconnect specifier pairs. + Reserved interconnect names: + * dma-mem: Path from the device to the main memory of + the system + Example: sdhci@7864000 {