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Fixed MTP to work with TWRP
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awab228
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309
Documentation/devicetree/bindings/powerpc/fsl/interlaken-lac.txt
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309
Documentation/devicetree/bindings/powerpc/fsl/interlaken-lac.txt
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===============================================================================
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Freescale Interlaken Look-Aside Controller Device Bindings
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Copyright 2012 Freescale Semiconductor Inc.
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CONTENTS
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- Interlaken Look-Aside Controller (LAC) Node
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- Example LAC Node
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- Interlaken Look-Aside Controller (LAC) Software Portal Node
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- Interlaken Look-Aside Controller (LAC) Software Portal Child Nodes
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- Example LAC SWP Node with Child Nodes
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==============================================================================
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Interlaken Look-Aside Controller (LAC) Node
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DESCRIPTION
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The Interlaken is a narrow, high speed channelized chip-to-chip interface. To
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facilitate interoperability between a data path device and a look-aside
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co-processor, the Interlaken Look-Aside protocol is defined for short
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transaction-related transfers. Although based on the Interlaken protocol,
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Interlaken Look-Aside is not directly compatible with Interlaken and can be
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considered a different operation mode.
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The Interlaken LA controller connects internal platform to Interlaken serial
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interface. It accepts LA command through software portals, which are system
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memory mapped 4KB spaces. The LA commands are then translated into the
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Interlaken control words and data words, which are sent on TX side to TCAM
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through SerDes lanes.
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There are two 4KiB spaces defined within the LAC global register memory map.
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There is a full register set at 0x0000-0x0FFF (also known as the "hypervisor"
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version), and a subset at 0x1000-0x1FFF. The former is a superset of the
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latter, and includes certain registers that should not be accessible to
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partitioned software. Separate nodes are used for each region, with a phandle
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linking the hypervisor node to the normal operating node.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac". This represents only
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those LAC CCSR registers not protected in partitioned
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software. The version of the device is determined by the LAC
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IP Block Revision Register (IPBRR0) at offset 0x0BF8.
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Table of correspondences between IPBRR0 values and example
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chips:
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Value Device
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----------- -------
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0x02000100 T4240
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The Hypervisor node has a different compatible. It must include
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"fsl,interlaken-lac-hv". This node represents the protected
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LAC register space and is required except inside a partition
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where access to the hypervisor node is to be denied.
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- fsl,non-hv-node
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Usage: required in "fsl,interlaken-lac-hv"
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Value type: <phandle>
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Definition: Points to the non-protected LAC CCSR mapped register space
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node.
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. The first resource represents the
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Interlaken LAC configuration registers.
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- interrupts:
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Usage: required in non-hv node only
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Value type: <prop-encoded-array>
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Definition: Interrupt mapping for Interlaken LAC error IRQ.
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EXAMPLE
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lac: lac@229000 {
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compatible = "fsl,interlaken-lac"
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reg = <0x229000 0x1000>;
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interrupts = <16 2 1 18>;
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};
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lac-hv@228000 {
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compatible = "fsl,interlaken-lac-hv"
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reg = <0x228000 0x1000>;
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fsl,non-hv-node = <&lac>;
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};
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===============================================================================
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Interlaken Look-Aside Controller (LAC) Software Portal Container Node
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DESCRIPTION
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The Interlaken Look-Aside Controller (LAC) utilizes Software Portals to accept
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Interlaken Look-Aside (ILA) commands. The Interlaken LAC software portal
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memory map occupies 128KB of memory space. The software portal memory space is
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intended to be cache-enabled. WIMG for each software space is required to be
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0010 if stashing is enabled; otherwise, WIMG can be 0000 or 0010.
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PROPERTIES
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- #address-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Must have a value of 1.
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- #size-cells
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Usage: required
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Value type: <u32>
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Definition: A standard property. Must have a value of 1.
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac-portals"
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- ranges
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. Specifies the address and length
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of the LAC portal memory space.
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===============================================================================
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Interlaken Look-Aside Controller (LAC) Software Portals Child Nodes
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DESCRIPTION
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There are up to 24 available software portals with each software portal
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requiring 4KB of consecutive memory within the software portal memory mapped
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space.
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PROPERTIES
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- compatible
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Usage: required
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Value type: <string>
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Definition: Must include "fsl,interlaken-lac-portal-vX.Y" where X is
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the Major version (IP_MJ) found in the LAC IP Block Revision
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Register (IPBRR0), at offset 0x0BF8, and Y is the Minor version
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(IP_MN).
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Table of correspondences between version values and example chips:
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Value Device
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------ -------
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1.0 T4240
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property. The first resource represents the
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Interlaken LAC software portal registers.
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- fsl,liodn
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Value type: <u32>
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Definition: The logical I/O device number (LIODN) for this device. The
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LIODN is a number expressed by this device and used to perform
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look-ups in the IOMMU (PAMU) address table when performing
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DMAs. This property is automatically added by u-boot.
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===============================================================================
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EXAMPLE
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lac-portals {
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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compatible = "fsl,interlaken-lac-portals";
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ranges = <0x0 0xf 0xf4400000 0x20000>;
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lportal0: lac-portal@0 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x204>;
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reg = <0x0 0x1000>;
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};
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lportal1: lac-portal@1000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x205>;
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reg = <0x1000 0x1000>;
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};
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lportal2: lac-portal@2000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x206>;
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reg = <0x2000 0x1000>;
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};
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lportal3: lac-portal@3000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x207>;
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reg = <0x3000 0x1000>;
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};
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lportal4: lac-portal@4000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x208>;
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reg = <0x4000 0x1000>;
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};
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lportal5: lac-portal@5000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x209>;
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reg = <0x5000 0x1000>;
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};
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lportal6: lac-portal@6000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20A>;
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reg = <0x6000 0x1000>;
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};
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lportal7: lac-portal@7000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20B>;
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reg = <0x7000 0x1000>;
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};
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lportal8: lac-portal@8000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20C>;
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reg = <0x8000 0x1000>;
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};
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lportal9: lac-portal@9000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20D>;
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reg = <0x9000 0x1000>;
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};
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lportal10: lac-portal@A000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20E>;
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reg = <0xA000 0x1000>;
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};
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lportal11: lac-portal@B000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x20F>;
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reg = <0xB000 0x1000>;
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};
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lportal12: lac-portal@C000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x210>;
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reg = <0xC000 0x1000>;
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};
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lportal13: lac-portal@D000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x211>;
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reg = <0xD000 0x1000>;
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};
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lportal14: lac-portal@E000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x212>;
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reg = <0xE000 0x1000>;
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};
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lportal15: lac-portal@F000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x213>;
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reg = <0xF000 0x1000>;
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};
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lportal16: lac-portal@10000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x214>;
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reg = <0x10000 0x1000>;
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};
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lportal17: lac-portal@11000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x215>;
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reg = <0x11000 0x1000>;
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};
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lportal8: lac-portal@1200 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x216>;
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reg = <0x12000 0x1000>;
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};
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lportal19: lac-portal@13000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x217>;
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reg = <0x13000 0x1000>;
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};
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lportal20: lac-portal@14000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x218>;
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reg = <0x14000 0x1000>;
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};
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lportal21: lac-portal@15000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x219>;
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reg = <0x15000 0x1000>;
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};
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lportal22: lac-portal@16000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x21A>;
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reg = <0x16000 0x1000>;
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};
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lportal23: lac-portal@17000 {
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compatible = "fsl,interlaken-lac-portal-v1.0";
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fsl,liodn = <0x21B>;
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reg = <0x17000 0x1000>;
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};
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};
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