summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/hsi/nokia-modem.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/hsi/nokia-modem.txt')
-rw-r--r--Documentation/devicetree/bindings/hsi/nokia-modem.txt57
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hsi/nokia-modem.txt b/Documentation/devicetree/bindings/hsi/nokia-modem.txt
new file mode 100644
index 000000000000..8a979780452b
--- /dev/null
+++ b/Documentation/devicetree/bindings/hsi/nokia-modem.txt
@@ -0,0 +1,57 @@
+Nokia modem client bindings
+
+The Nokia modem HSI client follows the common HSI client binding
+and inherits all required properties. The following additional
+properties are needed by the Nokia modem HSI client:
+
+Required properties:
+- compatible: Should be one of
+ "nokia,n900-modem"
+- hsi-channel-names: Should contain the following strings
+ "mcsaab-control"
+ "speech-control"
+ "speech-data"
+ "mcsaab-data"
+- gpios: Should provide a GPIO handler for each GPIO listed in
+ gpio-names
+- gpio-names: Should contain the following strings
+ "cmt_apeslpx"
+ "cmt_rst_rq"
+ "cmt_en"
+ "cmt_rst"
+ "cmt_bsi"
+- interrupts: Should be IRQ handle for modem's reset indication
+
+Example:
+
+&ssi_port {
+ modem: hsi-client {
+ compatible = "nokia,n900-modem";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&modem_pins>;
+
+ hsi-channel-ids = <0>, <1>, <2>, <3>;
+ hsi-channel-names = "mcsaab-control",
+ "speech-control",
+ "speech-data",
+ "mcsaab-data";
+ hsi-speed-kbps = <55000>;
+ hsi-mode = "frame";
+ hsi-flow = "synchronized";
+ hsi-arb-mode = "round-robin";
+
+ interrupts-extended = <&gpio3 8 IRQ_TYPE_EDGE_FALLING>; /* 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";
+ };
+};