This patch adds device tree binding documentation for
X-Gene QMTM UIO driver.
Signed-off-by: Ankit Jindal <ankit.jindal@xxxxxxxxxx>
Signed-off-by: Tushar Jagad <tushar.jagad@xxxxxxxxxx>
---
.../devicetree/bindings/uio/uio_xgene_qmtm.txt | 50 ++++++++++++++++++++
1 file changed, 50 insertions(+)
create mode 100644 Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
diff --git a/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt b/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
new file mode 100644
index 0000000..7afe78c
--- /dev/null
+++ b/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
@@ -0,0 +1,50 @@
+APM X-Gene QMTM nodes
+
+The Applied Micro X-Gene SOC has on-chip QMTM (Queue manager
+and Traffic manager). It is a device for managing hardware queues.
+It also implements QoS among hardware queues hence term "traffic"
+manager is present in its name.
+
+Required properties:
+- compatible: Should be "apm,xgene-qmtm"
+- reg: Address and length of the register set for the device. It contains the
+ information of registers in the same order as described by reg-names.
+- reg-names: Should contain the register set names
+ - "csr": QMTM control and status register address space.
+ - "fabric": QMTM memory mapped access to queue states.
+- qpool-memory: Points to the phandle of the node defining memory location for
+ creating QMTM queues. This must point to the reserved-memory node
+ (as-per reserved memory bindings). It is expected that size and
+ location of qpool memory will be configurable via bootloader.
+- clocks: Reference to the clock entry.
+- num-queues: Number of queues under this QMTM device.
+- devid: QMTM identification number for the system having multiple QMTM devices.
+ This is used to form a unique id (a tuple of queue number and
+ device id) for the queues belonging to this device.
+
+Example:
+ qmtm1_uio_qpool: qmtm1_uio_qpool {
+ reg = <0x0 0x0 0x0 0x0>;
+ };
+
+ qmtm1clk: qmtmclk@1f20c000 {
+ compatible = "apm,xgene-device-clock";
+ clock-output-names = "qmtm1clk";
+ };
+
+ qmtm1_uio: qmtm_uio@1f200000 {
+ compatible = "apm,xgene-qmtm";
+ status = "disabled";
+ reg = <0x0 0x1f200000 0x0 0x10000>,
+ <0x0 0x1b000000 0x0 0x400000>;
+ reg-names = "csr", "fabric";
+ qpool-memory = <&qmtm1_uio_qpool>;
+ clocks = <&qmtm1clk 0>;
+ num-queues = <0x400>;
+ devid = <1>;
+ };
+
+ /* Board-specific peripheral configurations */
+ &qmtm1_uio {
+ status = "okay";
+ };
--
1.7.9.5
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