tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1Each HSI port is supposed to have one child node, which
2symbols the remote device connected to the HSI port. The
3following properties are standardized for HSI clients:
4
5Required HSI configuration properties:
6
7- hsi-channel-ids: A list of channel ids
8
9- hsi-rx-mode: Receiver Bit transmission mode ("stream" or "frame")
10- hsi-tx-mode: Transmitter Bit transmission mode ("stream" or "frame")
11- hsi-mode: May be used instead hsi-rx-mode and hsi-tx-mode if
12 the transmission mode is the same for receiver and
13 transmitter
14- hsi-speed-kbps: Max bit transmission speed in kbit/s
15- hsi-flow: RX flow type ("synchronized" or "pipeline")
16- hsi-arb-mode: Arbitration mode for TX frame ("round-robin", "priority")
17
18Optional HSI configuration properties:
19
20- hsi-channel-names: A list with one name per channel specified in the
21 hsi-channel-ids property
22
23
24Device Tree node example for an HSI client:
25
26hsi-controller {
27 hsi-port {
28 modem: hsi-client {
29 compatible = "nokia,n900-modem";
30
31 hsi-channel-ids = <0>, <1>, <2>, <3>;
32 hsi-channel-names = "mcsaab-control",
33 "speech-control",
34 "speech-data",
35 "mcsaab-data";
36 hsi-speed-kbps = <55000>;
37 hsi-mode = "frame";
38 hsi-flow = "synchronized";
39 hsi-arb-mode = "round-robin";
40
41 /* more client specific properties */
42 };
43 };
44};