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.
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.
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 {
dma-names = "tx", "rx";
};
+ hsi: hsi@4a058000 {
+ compatible = "ti,omap4-hsi";
+ reg = <0x4a058000 0x4000>,
+ <0x4a05c000 0x1000>;
+ reg-names = "sys", "gdd";
+ ti,hwmods = "hsi";
+
+ clocks = <&hsi_fck>;
+ clock-names = "hsi_fck";
+
+ interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "gdd_mpu";
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x4a058000 0x4000>;
+
+ hsi_port1: hsi-port@2000 {
+ compatible = "ti,omap4-hsi-port";
+ reg = <0x2000 0x800>,
+ <0x2800 0x800>;
+ reg-names = "tx", "rx";
+ interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ hsi_port2: hsi-port@3000 {
+ compatible = "ti,omap4-hsi-port";
+ reg = <0x3000 0x800>,
+ <0x3800 0x800>;
+ reg-names = "tx", "rx";
+ interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
mmu_dsp: mmu@4a066000 {
compatible = "ti,omap4-iommu";
reg = <0x4a066000 0x100>;