From: Leo Yan <leo....@linaro.org>
Introduce a binding for the Hi3660 mailbox controller, the mailbox is
used within application processor (AP), communication processor (CP),
HIFI and MCU, etc.
Cc: John Stultz <john.stu...@linaro.org>
Cc: Guodong Xu <guodong...@linaro.org>
Cc: Haojian Zhuang <haojian.zhu...@linaro.org>
Cc: Niranjan Yadla <nya...@cadence.com>
Cc: Raj Pawate <pawa...@cadence.com>
Signed-off-by: Leo Yan <leo....@linaro.org>
---
.../bindings/mailbox/hisilicon,hi3660-mailbox.txt | 52 ++++++++++++++++++++++
1 file changed, 52 insertions(+)
create mode 100644
Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
diff --git
a/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
b/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
new file mode 100644
index 0000000..8a8d7e1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
@@ -0,0 +1,52 @@
+Hisilicon Hi3660 Mailbox Driver
+
+Hisilicon Hi3660 mailbox controller supports up to 32 channels. Messages
+are passed between processors, including application & communication
+processors, MCU, HIFI, etc. Each channel is unidirectional and accessed
+by using MMIO registers; it supports maximum to 8 words message.
+
+Controller
+----------
+
+Required properties:
+- compatible: : Shall be "hisilicon,hi3660-mbox"
+- reg: : Offset and length of the device's register set
+- #mbox-cells: : Must be 3
+ <&phandle channel dst_irq ack_irq>
+ phandle : Label name of controller
+ channel : Channel number
+ dst_irq : Remote interrupt vector
+ ack_irq : Local interrupt vector
+
+- interrupts: : Contains the two IRQ lines for mailbox.
+
+Example:
+
+mailbox: mailbox@e896b000 {
+ compatible = "hisilicon,hi3660-mbox";
+ reg = <0x0 0xe896b000 0x0 0x1000>;
+ interrupts = <0x0 0xc0 0x4>,
+ <0x0 0xc1 0x4>;
+ #mbox-cells = <3>;
+};
+
+Client
+------
+
+Required properties:
+- compatible : See the client docs
+- 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:
+
+stub_clock: stub_clock {
+ compatible = "hisilicon,hi3660-stub-clk";
+ reg = <0x0 0xe896b500 0x0 0x0100>;
+ #clock-cells = <1>;
+ mbox-names = "mbox-tx";
+ mboxes = <&mailbox 13 3 0>;
+};
--
1.9.1
