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dt-bindings: hsi: add omap4 hsi controller bindings

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Update omap-ssi binding document to also cover the HSI
compliant module from OMAP4.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Rob Herring <robh@kernel.org>
[dropped the omap.dtsi update and updated patch description accordingly]
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Tony Lindgren 2017-10-01 17:17:26 +02:00 committed by Sebastian Reichel
parent 36edec05a2
commit 8635d6b3af
1 changed files with 10 additions and 3 deletions
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13
Documentation/devicetree/bindings/hsi/omap-ssi.txt
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@ -1,10 +1,12 @@
OMAP SSI controller bindings
OMAP Synchronous Serial Interface (SSI) controller implements a legacy
variant of MIPI's High Speed Synchronous Serial Interface (HSI).
OMAP3's Synchronous Serial Interface (SSI) controller implements a
legacy variant of MIPI's High Speed Synchronous Serial Interface (HSI),
while the controller found inside OMAP4 is supposed to be fully compliant
with the HSI standard.
Required properties:
- compatible: Should include "ti,omap3-ssi".
- compatible: Should include "ti,omap3-ssi" or "ti,omap4-hsi"
- reg-names: Contains the values "sys" and "gdd" (in this order).
- reg: Contains a matching register specifier for each entry
in reg-names.
@ -27,6 +29,7 @@ Each port is represented as a sub-node of the ti,omap3-ssi device.
Required Port sub-node properties:
- compatible: Should be set to the following value
ti,omap3-ssi-port (applicable to OMAP34xx devices)
ti,omap4-hsi-port (applicable to OMAP44xx devices)
- reg-names: Contains the values "tx" and "rx" (in this order).
- reg: Contains a matching register specifier for each entry
in reg-names.
@ -38,6 +41,10 @@ Required Port sub-node properties:
property. If it's missing the port will not be
enabled.
Optional properties:
- ti,hwmods: Shall contain TI interconnect module name if needed
by the SoC
Example for Nokia N900:
ssi-controller@48058000 {