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author | Lee Jones <lee.jones@linaro.org> | 2015-10-16 07:21:27 (GMT) |
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committer | Jassi Brar <jaswinder.singh@linaro.org> | 2015-10-17 05:06:56 (GMT) |
commit | b5f6737685d54c079db7bec891128de8d07d1c51 (patch) | |
tree | 2a857725503fc4a7db2526c42172a3edfcf8e55b /Documentation/devicetree/bindings/mailbox | |
parent | d311a28a5853857a73d54d15dc30797aa3b1802d (diff) | |
download | linux-b5f6737685d54c079db7bec891128de8d07d1c51.tar.xz |
mailbox: dt: Supply bindings for ST's Mailbox IP
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/mailbox')
-rw-r--r-- | Documentation/devicetree/bindings/mailbox/sti-mailbox.txt | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt b/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt new file mode 100644 index 0000000..b61eec9 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt @@ -0,0 +1,51 @@ +ST Microelectronics Mailbox Driver + +Each ST Mailbox IP currently consists of 4 instances of 32 channels. Messages +are passed between Application and Remote processors using shared memory. + +Controller +---------- + +Required properties: +- compatible : Should be "st,stih407-mailbox" +- reg : Offset and length of the device's register set +- mbox-name : Name of the mailbox +- #mbox-cells: : Must be 2 + <&phandle instance channel direction> + phandle : Label name of controller + instance : Instance number + channel : Channel number + +Optional properties +- interrupts : Contains the IRQ line for a Rx mailbox + +Example: + +mailbox0: mailbox@0 { + compatible = "st,stih407-mailbox"; + reg = <0x08f00000 0x1000>; + interrupts = <GIC_SPI 1 IRQ_TYPE_NONE>; + #mbox-cells = <2>; + mbox-name = "a9"; +}; + +Client +------ + +Required properties: +- compatible : Many (See the client docs) +- reg : Shared (between Application and Remote) memory address +- mboxes : Standard property to specify a Mailbox (See ./mailbox.txt) + Cells must match 'mbox-cells' (See Controller docs above) + +Optional properties +- mbox-names : Name given to channels seen in the 'mboxes' property. + +Example: + +mailbox_test { + compatible = "mailbox_test"; + reg = <0x[shared_memory_address], [shared_memory_size]>; + mboxes = <&mailbox2 0 1>, <&mailbox0 2 1>; + mbox-names = "tx", "rx"; +}; |