[PATCH 4/5] dt-bindings: Add binding info for Xgene QMTM UIO driver
From: Ankit Jindal <hidden>
Date: 2014-09-09 09:58:00
Also in:
lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This patch adds device tree binding documentation for Xgene QMTM UIO driver. Signed-off-by: Ankit Jindal <redacted> Signed-off-by: Tushar Jagad <redacted> --- .../devicetree/bindings/uio/uio_xgene_qmtm.txt | 45 ++++++++++++++++++++ 1 file changed, 45 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..b71831b
--- /dev/null
+++ b/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt@@ -0,0 +1,45 @@ +APM X-Gene QMTM UIO nodes + +QMTM UIO nodes are defined for user space access to on-chip QMTM device +on APM X-Gene SOC using UIO framework. + +Required properties: +- compatible: Should be "apm,xgene-qmtm-uio" +- 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 location for creating QMTM queues. This could be some + SRAM or reserved portion of RAM. 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 + +Optional properties: +- status: Should be "ok" or "disabled" for enabled/disabled. Default is "ok". + +Example: + qmtm1clk: qmtmclk at 1f20c000 { + compatible = "apm,xgene-device-clock"; + clock-output-names = "qmtm1clk"; + status = "ok"; + }; + + qmtm1_uio: qmtm_uio at 1f200000 { + compatible = "apm,xgene-qmtm-uio"; + status = "disabled"; + reg = <0x0 0x1f200000 0x0 0x10000 + 0x0 0x1b000000 0x0 0x400000 + 0x0 0x00000000 0x0 0x0>;/* filled by bootloader */ + reg-names = "csr", "fabric", "qpool"; + clocks = <&qmtm1clk 0>; + num_queues = <0x400>; + devid = <1>; + }; + + /* Board-specific peripheral configurations */ + &qmtm1_uio { + status = "ok"; + };
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1.7.9.5