Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / ata / pata-arasan.txt

diff --git a/kernel/Documentation/devicetree/bindings/ata/pata-arasan.txt b/kernel/Documentation/devicetree/bindings/ata/pata-arasan.txt
new file mode 100644 (file)
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+++ b/kernel/Documentation/devicetree/bindings/ata/pata-arasan.txt
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+* ARASAN PATA COMPACT FLASH CONTROLLER
+
+Required properties:
+- compatible: "arasan,cf-spear1340"
+- reg: Address range of the CF registers
+- interrupt-parent: Should be the phandle for the interrupt controller
+  that services interrupts for this device
+- interrupt: Should contain the CF interrupt number
+- clock-frequency: Interface clock rate, in Hz, one of
+       25000000
+       33000000
+       40000000
+       50000000
+       66000000
+       75000000
+      100000000
+      125000000
+      150000000
+      166000000
+      200000000
+
+Optional properties:
+- arasan,broken-udma: if present, UDMA mode is unusable
+- arasan,broken-mwdma: if present, MWDMA mode is unusable
+- arasan,broken-pio: if present, PIO mode is unusable
+- dmas: one DMA channel, as described in bindings/dma/dma.txt
+  required unless both UDMA and MWDMA mode are broken
+- dma-names: the corresponding channel name, must be "data"
+
+Example:
+
+       cf@fc000000 {
+               compatible = "arasan,cf-spear1340";
+               reg = <0xfc000000 0x1000>;
+               interrupt-parent = <&vic1>;
+               interrupts = <12>;
+               dmas = <&dma-controller 23>;
+               dma-names = "data";
+       };