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Message-Id: <1442228798-15191-2-git-send-email-wxt@rock-chips.com>
Date: Mon, 14 Sep 2015 19:06:36 +0800
From: Caesar Wang <wxt@...k-chips.com>
To: heiko@...ech.de, jassisinghbrar@...il.com
Cc: devicetree@...r.kernel.org, wxt@...k-chips.com, robh+dt@...nel.org,
galak@...eaurora.org, linux-kernel@...r.kernel.org,
ijc+devicetree@...lion.org.uk, linux-rockchip@...ts.infradead.org,
pawel.moll@....com, will.deacon@....com, mark.rutland@....com,
olof@...om.net, catalin.marinas@....com,
linux-arm-kernel@...ts.infradead.org, frank.wang@...k-chips.com
Subject: [PATCH 1/3] dt-bindings: Add document of Rockchip mailbox
This add the necessary binding documentation for mailbox
found on RK3368 SoC.
Signed-off-by: Caesar Wang <wxt@...k-chips.com>
---
.../bindings/mailbox/rockchip-mailbox.txt | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt
diff --git a/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt b/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt
new file mode 100644
index 0000000..b9b4768
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt
@@ -0,0 +1,33 @@
+Rockchip mailbox
+
+The Rockchip mailbox is used by the Rockchip CPU cores to communicate
+requests to MCU processor.
+
+Refer to ./mailbox.txt for generic information about mailbox device-tree
+bindings.
+
+Required properties:
+
+ - compatible: should be one of the following.
+ - "rockchip,rk3368-mbox" for rk3368
+ - reg: physical base address of the controller and length of memory mapped
+ region.
+ physical base address of the share buffer and length of memory mapped
+ region.
+ - interrupts: The interrupt number to the cpu. The interrupt specifier format
+ depends on the interrupt controller.
+
+Example:
+--------
+
+/* RK3368 */
+mbox: mbox@...b0000 {
+ compatible = "rockchip,rk3368-mailbox";
+ reg = <0x0 0xff6b0000 0x0 0x1000>,
+ <0x0 0xff8cf000 0x0 0x1000>; /* the end 4k of sram */
+ interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
+ #mbox-cells = <1>;
+};
--
1.9.1
--
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