[RFCv4 07/11] Documentation: DT: nokia-cmt binding documentation

[Sebastian Reichel]

Create device tree binding documentation for
Nokia cellular modem GPIO handling.

Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
---
 .../devicetree/bindings/misc/nokia-cmt.txt         | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/nokia-cmt.txt

diff --git a/Documentation/devicetree/bindings/misc/nokia-cmt.txt b/Documentation/devicetree/bindings/misc/nokia-cmt.txt
new file mode 100644
index 0000000..1c87793
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/nokia-cmt.txt
@@ -0,0 +1,28 @@
+Nokia Cellular Modem (CMT) bindings
+
+Required properties:
+- compatible:		Should include "nokia,cmt".
+- interrupts:		Interrupt specifier for the cmt reset irq.
+- gpio-names:		Contains the values "cmt_apeslpx", "cmt_rst_rq",
+			"cmt_en", "cmt_rst" and "cmt_bsi".
+- gpios:		Contains gpio information for each entry in gpio-names.
+
+Example for Nokia N900:
+
+cmt: nokia-cmt {
+	compatible = "nokia,cmt";
+
+	interrupt-parent = <&gpio3>;
+	interrupts = <8 IRQ_TYPE_EDGE_FALLING>; /* gpio line 72 */
+
+	gpios = <&gpio3  6 GPIO_ACTIVE_HIGH>, /* 70 */
+		<&gpio3  9 GPIO_ACTIVE_HIGH>, /* 73 */
+		<&gpio3 10 GPIO_ACTIVE_HIGH>, /* 74 */
+		<&gpio3 11 GPIO_ACTIVE_HIGH>, /* 75 */
+		<&gpio5 29 GPIO_ACTIVE_HIGH>; /* 157 */
+	gpio-names = "cmt_apeslpx",
+		     "cmt_rst_rq",
+		     "cmt_en",
+		     "cmt_rst",
+		     "cmt_bsi";
+};
-- 
1.8.5.1

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