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-rw-r--r--dts/Bindings/dma/dma.txt28
-rw-r--r--dts/Bindings/dma/mv-xor.txt2
-rw-r--r--dts/Bindings/dma/sirfsoc-dma.txt3
-rw-r--r--dts/Bindings/dma/sun6i-dma.txt5
-rw-r--r--dts/Bindings/dma/ti-dma-crossbar.txt52
5 files changed, 87 insertions, 3 deletions
diff --git a/dts/Bindings/dma/dma.txt b/dts/Bindings/dma/dma.txt
index 82104271e..6312fb00c 100644
--- a/dts/Bindings/dma/dma.txt
+++ b/dts/Bindings/dma/dma.txt
@@ -31,6 +31,34 @@ Example:
dma-requests = <127>;
};
+* DMA router
+
+DMA routers are transparent IP blocks used to route DMA request lines from
+devices to the DMA controller. Some SoCs (like TI DRA7x) have more peripherals
+integrated with DMA requests than what the DMA controller can handle directly.
+
+Required property:
+- dma-masters: phandle of the DMA controller or list of phandles for
+ the DMA controllers the router can direct the signal to.
+- #dma-cells: Must be at least 1. Used to provide DMA router specific
+ information. See DMA client binding below for more
+ details.
+
+Optional properties:
+- dma-requests: Number of incoming request lines the router can handle.
+- In the node pointed by the dma-masters:
+ - dma-requests: The router driver might need to look for this in order
+ to configure the routing.
+
+Example:
+ sdma_xbar: dma-router@4a002b78 {
+ compatible = "ti,dra7-dma-crossbar";
+ reg = <0x4a002b78 0xfc>;
+ #dma-cells = <1>;
+ dma-requests = <205>;
+ ti,dma-safe-map = <0>;
+ dma-masters = <&sdma>;
+ };
* DMA client
diff --git a/dts/Bindings/dma/mv-xor.txt b/dts/Bindings/dma/mv-xor.txt
index 7c6cb7fce..cc29c3526 100644
--- a/dts/Bindings/dma/mv-xor.txt
+++ b/dts/Bindings/dma/mv-xor.txt
@@ -1,7 +1,7 @@
* Marvell XOR engines
Required properties:
-- compatible: Should be "marvell,orion-xor"
+- compatible: Should be "marvell,orion-xor" or "marvell,armada-380-xor"
- reg: Should contain registers location and length (two sets)
the first set is the low registers, the second set the high
registers for the XOR engine.
diff --git a/dts/Bindings/dma/sirfsoc-dma.txt b/dts/Bindings/dma/sirfsoc-dma.txt
index ecbc96ad3..ccd52d6a2 100644
--- a/dts/Bindings/dma/sirfsoc-dma.txt
+++ b/dts/Bindings/dma/sirfsoc-dma.txt
@@ -3,7 +3,8 @@
See dma.txt first
Required properties:
-- compatible: Should be "sirf,prima2-dmac" or "sirf,marco-dmac"
+- compatible: Should be "sirf,prima2-dmac", "sirf,atlas7-dmac" or
+ "sirf,atlas7-dmac-v2"
- reg: Should contain DMA registers location and length.
- interrupts: Should contain one interrupt shared by all channel
- #dma-cells: must be <1>. used to represent the number of integer
diff --git a/dts/Bindings/dma/sun6i-dma.txt b/dts/Bindings/dma/sun6i-dma.txt
index 9cdcba24d..d13c136ce 100644
--- a/dts/Bindings/dma/sun6i-dma.txt
+++ b/dts/Bindings/dma/sun6i-dma.txt
@@ -4,7 +4,10 @@ This driver follows the generic DMA bindings defined in dma.txt.
Required properties:
-- compatible: Must be "allwinner,sun6i-a31-dma" or "allwinner,sun8i-a23-dma"
+- compatible: Must be one of
+ "allwinner,sun6i-a31-dma"
+ "allwinner,sun8i-a23-dma"
+ "allwinner,sun8i-h3-dma"
- reg: Should contain the registers base address and length
- interrupts: Should contain a reference to the interrupt used by this device
- clocks: Should contain a reference to the parent AHB clock
diff --git a/dts/Bindings/dma/ti-dma-crossbar.txt b/dts/Bindings/dma/ti-dma-crossbar.txt
new file mode 100644
index 000000000..63a48928f
--- /dev/null
+++ b/dts/Bindings/dma/ti-dma-crossbar.txt
@@ -0,0 +1,52 @@
+Texas Instruments DMA Crossbar (DMA request router)
+
+Required properties:
+- compatible: "ti,dra7-dma-crossbar" for DRA7xx DMA crossbar
+- reg: Memory map for accessing module
+- #dma-cells: Should be set to <1>.
+ Clients should use the crossbar request number (input)
+- dma-requests: Number of DMA requests the crossbar can receive
+- dma-masters: phandle pointing to the DMA controller
+
+The DMA controller node need to have the following poroperties:
+- dma-requests: Number of DMA requests the controller can handle
+
+Optional properties:
+- ti,dma-safe-map: Safe routing value for unused request lines
+
+Example:
+
+/* DMA controller */
+sdma: dma-controller@4a056000 {
+ compatible = "ti,omap4430-sdma";
+ reg = <0x4a056000 0x1000>;
+ interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <1>;
+ dma-channels = <32>;
+ dma-requests = <127>;
+};
+
+/* DMA crossbar */
+sdma_xbar: dma-router@4a002b78 {
+ compatible = "ti,dra7-dma-crossbar";
+ reg = <0x4a002b78 0xfc>;
+ #dma-cells = <1>;
+ dma-requests = <205>;
+ ti,dma-safe-map = <0>;
+ dma-masters = <&sdma>;
+};
+
+/* DMA client */
+uart1: serial@4806a000 {
+ compatible = "ti,omap4-uart";
+ reg = <0x4806a000 0x100>;
+ interrupts-extended = <&gic GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "uart1";
+ clock-frequency = <48000000>;
+ status = "disabled";
+ dmas = <&sdma_xbar 49>, <&sdma_xbar 50>;
+ dma-names = "tx", "rx";
+};