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a2aa24734d
Implement and document generic DT bindings for HSI clients. Signed-off-by: Sebastian Reichel <sre@kernel.org> Reviewed-by: Pavel Machek <pavel@ucw.cz> Tested-By: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
Each HSI port is supposed to have one child node, which
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symbols the remote device connected to the HSI port. The
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following properties are standardized for HSI clients:
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Required HSI configuration properties:
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- hsi-channel-ids: A list of channel ids
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- hsi-rx-mode: Receiver Bit transmission mode ("stream" or "frame")
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- hsi-tx-mode: Transmitter Bit transmission mode ("stream" or "frame")
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- hsi-mode: May be used instead hsi-rx-mode and hsi-tx-mode if
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the transmission mode is the same for receiver and
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transmitter
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- hsi-speed-kbps: Max bit transmission speed in kbit/s
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- hsi-flow: RX flow type ("synchronized" or "pipeline")
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- hsi-arb-mode: Arbitration mode for TX frame ("round-robin", "priority")
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Optional HSI configuration properties:
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- hsi-channel-names: A list with one name per channel specified in the
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hsi-channel-ids property
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Device Tree node example for an HSI client:
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hsi-controller {
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hsi-port {
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modem: hsi-client {
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compatible = "nokia,n900-modem";
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hsi-channel-ids = <0>, <1>, <2>, <3>;
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hsi-channel-names = "mcsaab-control",
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"speech-control",
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"speech-data",
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"mcsaab-data";
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hsi-speed-kbps = <55000>;
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hsi-mode = "frame";
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hsi-flow = "synchronized";
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hsi-arb-mode = "round-robin";
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/* more client specific properties */
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};
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};
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};
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