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Diffstat (limited to 'Documentation/devicetree/bindings/net')
| -rw-r--r-- | Documentation/devicetree/bindings/net/imx-shmem-net.txt | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/imx-shmem-net.txt b/Documentation/devicetree/bindings/net/imx-shmem-net.txt new file mode 100644 index 000000000000..e1fe220c5a41 --- /dev/null +++ b/Documentation/devicetree/bindings/net/imx-shmem-net.txt @@ -0,0 +1,37 @@ +i.MX SHMEM-NET implementations + +A network device to communicate with another domain. +Communication is done through shared memory + and synchronized by Mailbox Units of imx. +Use Mailbox Units side A to communicate with side B. + +Required properties: +- compatible : "fsl,imx-shmem-net". +- rxfirst: The flag that indicates the position of the RX buffer, + one of the two partitions must set it. +- mub-partition: The id number of the remote processors, + used on i.mx8qm for partition reset. The default + value is 3 in driver without this property. +- mbox-names: the mailbox channel names. +- mboxes: the mailboxes list containing: + MU name, channel type (0 for TX, 1 for RX) and channel id. +- memory-region: the coherent memory shared across domains. + +===================================================================== + +Example: + +imx_shmem_net: imx_shmem_net { + compatible = "fsl,imx-shmem-net"; + mub-partition = <1>; + mbox-names = "tx", "rx"; + mboxes = <&lsio_mu8b 0 1 + &lsio_mu8b 1 1>; + status = "disabled"; +}; + +&imx_shmem_net{ + memory-region = <&shmem_dma_reserved>; + status = "okay"; +}; + |