[RESEND PATCH V4 3/3] IB/hns: Add binding document for HiSilicon RoCE driver

From: Lijun Ou
Date: Fri Apr 01 2016 - 06:12:20 EST

This patch adds related DTS binding document for HiSilicon RoCE driver.

Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
Signed-off-by: Wei Hu(Xavier) <xavier.huwei@xxxxxxxxxx>
---
.../bindings/infiniband/hisilicon-hns-roce.txt | 107 +++++++++++++++++++++
1 file changed, 107 insertions(+)
create mode 100644 Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt

diff --git a/Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt b/Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt
new file mode 100644
index 0000000..5180fef
--- /dev/null
+++ b/Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt
@@ -0,0 +1,107 @@
+HiSilicon RoCE DT description
+
+HiSilicon RoCE engine is a part of network subsystem.
+It works depending on other part of network wubsytem, such as, gmac and
+dsa fabric.
+
+Additional properties are described here:
+
+Required properties:
+- compatible: Should contain "hisilicon,hns-roce-v1".
+- reg: Physical base address of the roce driver and
+length of memory mapped region.
+- eth-handle: phandle, specifies a reference to a node
+representing a ethernet device.
+- dsaf-handle: phandle, specifies a reference to a node
+representing a dsaf device.
+- #address-cells: must be 2
+- #size-cells: must be 2
+Optional properties:
+- dma-coherent: Present if DMA operations are coherent.
+- interrupt-parent: the interrupt parent of this device.
+- interrupts: should contain 32 completion event irq,1 async event irq
+and 1 event overflow irq.
+- interrupt-names:should be one of 34 irqs for roce device
+ - roce_ce0_irq ~ roce_ce31_irq: 32 complete event irq
+ - roce_ae_irq: 1 async event irq
+ - roce_common_irq: named common exception warning irq
+Example:
+ infiniband@c4000000 {
+ compatible = "hisilicon,hns-roce-v1";
+ reg = <0x0 0xc4000000 0x0 0x100000>;
+ dma-coherent;
+ eth-handle = <&eth2 &eth3 &eth4 &eth5 &eth6 &eth7>;
+ dsaf-handle = <&soc0_dsa>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ interrupt-parent = <&mbigen_dsa>;
+ interrupts = <722 1>,
+ <723 1>,
+ <724 1>,
+ <725 1>,
+ <726 1>,
+ <727 1>,
+ <728 1>,
+ <729 1>,
+ <730 1>,
+ <731 1>,
+ <732 1>,
+ <733 1>,
+ <734 1>,
+ <735 1>,
+ <736 1>,
+ <737 1>,
+ <738 1>,
+ <739 1>,
+ <740 1>,
+ <741 1>,
+ <742 1>,
+ <743 1>,
+ <744 1>,
+ <745 1>,
+ <746 1>,
+ <747 1>,
+ <748 1>,
+ <749 1>,
+ <750 1>,
+ <751 1>,
+ <752 1>,
+ <753 1>,
+ <785 1>,
+ <754 4>;
+
+ interrupt-names = "roce_ce0_irq",
+ "roce_ce1_irq",
+ "roce_ce2_irq",
+ "roce_ce3_irq",
+ "roce_ce4_irq",
+ "roce_ce5_irq",
+ "roce_ce6_irq",
+ "roce_ce7_irq",
+ "roce_ce8_irq",
+ "roce_ce9_irq",
+ "roce_ce10_irq",
+ "roce_ce11_irq",
+ "roce_ce12_irq",
+ "roce_ce13_irq",
+ "roce_ce14_irq",
+ "roce_ce15_irq",
+ "roce_ce16_irq",
+ "roce_ce17_irq",
+ "roce_ce18_irq",
+ "roce_ce19_irq",
+ "roce_ce20_irq",
+ "roce_ce21_irq",
+ "roce_ce22_irq",
+ "roce_ce23_irq",
+ "roce_ce24_irq",
+ "roce_ce25_irq",
+ "roce_ce26_irq",
+ "roce_ce27_irq",
+ "roce_ce28_irq",
+ "roce_ce29_irq",
+ "roce_ce30_irq",
+ "roce_ce31_irq",
+ "roce_ae_irq",
+ "roce_common_irq";
+ };
--
1.9.1