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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/hsi/client-devices.txt
parentInitial commit. (diff)
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+Each HSI port is supposed to have one child node, which
+symbols the remote device connected to the HSI port. The
+following properties are standardized for HSI clients:
+
+Required HSI configuration properties:
+
+- hsi-channel-ids: A list of channel ids
+
+- hsi-rx-mode: Receiver Bit transmission mode ("stream" or "frame")
+- hsi-tx-mode: Transmitter Bit transmission mode ("stream" or "frame")
+- hsi-mode: May be used instead hsi-rx-mode and hsi-tx-mode if
+ the transmission mode is the same for receiver and
+ transmitter
+- hsi-speed-kbps: Max bit transmission speed in kbit/s
+- hsi-flow: RX flow type ("synchronized" or "pipeline")
+- hsi-arb-mode: Arbitration mode for TX frame ("round-robin", "priority")
+
+Optional HSI configuration properties:
+
+- hsi-channel-names: A list with one name per channel specified in the
+ hsi-channel-ids property
+
+
+Device Tree node example for an HSI client:
+
+hsi-controller {
+ hsi-port {
+ modem: hsi-client {
+ compatible = "nokia,n900-modem";
+
+ 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";
+
+ /* more client specific properties */
+ };
+ };
+};